WO2023017324A1

WO2023017324A1 - First carpometacarpal joint distraction

Info

Publication number: WO2023017324A1
Application number: PCT/IB2022/053335
Authority: WO
Inventors: Ali MORADI; Mahla DALIRI BEIRAK OLIA; Alireza AKBARZADEH; Mohammadreza AKBARZADEH; Hamed HAFIZ; Amin REZAEIAN; Hamed RAFIEI; Maryam KAZEMI; Amirmohammad KAMALI; Arya HEDJAZI
Original assignee: Moradi Ali; Daliri Beirak Olia Mahla; Akbarzadeh Alireza; Akbarzadeh Mohammadreza; Hafiz Hamed; Rezaeian Amin; Rafiei Hamed; Kazemi Maryam; Kamali Amirmohammad; Hedjazi Arya
Priority date: 2021-08-10
Filing date: 2022-04-09
Publication date: 2023-02-16

Abstract

A distraction system for first carpometacarpal joint of a human hand. The distraction system includes a metacarpal insertion part including a cylindrical magnet and a trapezium insertion part including a spherical magnet. The cylindrical magnet is inserted into the proximal end of the first metacarpal bone of the patient and the spherical magnet is inserted into the trapezium bone of the patient in such a way that similar magnetic poles of the cylindrical magnet and the spherical magnet are placed at two opposite sides of the first carpometacarpal joint of the patient. The repulsion force between the similar magnetic poles of the cylindrical magnet and the spherical magnet urges the first metacarpal bone and the trapezium bone to move away from each other and, thereby, the first carpometacarpal joint of the patient is distracted.

Description

FIRST CARPOMETACARPAL JOINT DISTRACTION

TECHNICAL FIELD

[0001] The present disclosure generally relates to therapies for treating a joint of a patient and particularly relates to therapies for treating osteoarthritis in a first carpometacarpal joint of a human hand. The present disclosure, more particularly, relates to a system for first carpometacarpal joint distraction by utilizing a magnetic system.

BACKGROUND ART

[0002] Osteoarthritis is the most common form of arthritis, affecting the hands, knees, hips, spine, and other joints. Characteristics of osteoarthritis may include, but not limited to, a loss of cartilage, seen as a reduction in the joint space, and osteophytes (or bone spurs). Arthritic pain may be considered as a leading cause of lost productivity. The exact cause of arthritic pain is still unclear. However, due to the severity of the associated pain, finding a treatment is necessary.

[0003] First carpometacarpal joint (CMC1) osteoarthritis (OA) affects about one third of people over 55 years old. Females in the fifth to seventh decades of life are most commonly affected. Established osteoarthritis of the first carpometacarpal joint may severely and negatively affect hand function due to pain, weakness, and deformity, all resulting in marked disability. Most patients associated with the first carpometacarpal joint osteoarthritis may be forced to make adjustments to their work and leisure activities.

[0004] In early phases in the progression of first carpometacarpal joint osteoarthritis, conservative treatment methods may bring relief to some patients. However, for other patients, symptom relief with these non-operative managements may be inadequate or only temporary. The majority of progressive cases may eventually require some form of operative intervention to provide relief of symptoms and restore the functionality of the hand. In recent years, a multitude of surgical inventions have been proposed and used. However, no single operative technique has gained fully satisfactory results.

[0005] The presently available surgical techniques for first carpometacarpal joint osteoarthritis leave sufficient room for alternatives that preserve the joint, are less invasive, and lead to structural tissue repair with potential long-term benefit and subsequently improving costeffectiveness. Joint distraction has recently been proposed as a very adequate and minimally invasive method for treating osteoarthritis in different joints of the human body. Though some of distraction methods and systems have been relatively successful for treating osteoarthritis in knee and ankle joints but none of them have been promising in treating first carpometacarpal joint osteoarthritis. There is, therefore, a need for a system to distract first carpometacarpal joint with a view to treat first carpometacarpal joint osteoarthritis.

SUMMARY OF THE DISCLOSURE

[0006] This summary is intended to provide an overview of the subject matter of the present disclosure, and is not intended to identify essential elements or key elements of the subject matter, nor is it intended to be used to determine the scope of the claimed implementations. The proper scope of the present disclosure may be ascertained from the claims set forth below in view of the detailed description below and the drawings.

[0007] In one general aspect, the present disclosure describes a distraction system for first carpometacarpal joint of a human hand. In an exemplary embodiment, the disclosed distraction system may include a metacarpal insertion part and a trapezium insertion part. In an exemplary embodiment, the metacarpal insertion part may include a cylindrical magnet. In an exemplary embodiment, the cylindrical magnet may be configured to be inserted into a proximal end of a first metacarpal bone of a patient in such a way that a first carpometacarpal joint of the patient is closer to a first magnetic pole of the cylindrical magnet than a second magnetic pole of the cylindrical magnet.

[0008] In an exemplary embodiment, the trapezium insertion part may include a spherical magnet. In an exemplary embodiment, the spherical magnet may be configured to be inserted into a trapezium bone of the patient in such a way that the first carpometacarpal joint of the patient is closer to a first magnetic pole of the spherical magnet than a second magnetic pole of the cylindrical magnet.

[0009] In an exemplary embodiment, the first magnetic pole of the cylindrical magnet may be the same as the first magnetic pole of the spherical magnet. In an exemplary embodiment, the cylindrical magnet may be configured to urge the spherical magnet to move away from the cylindrical magnet and, to thereby, urge the trapezium bone of the patient to move away from the first metacarpal bone of the patient due to the magnetic repulsion force between the first magnetic pole of the cylindrical magnet and the first magnetic pole of the spherical magnet.

[0010] In an exemplary embodiment, the spherical magnet may be configured to urge the cylindrical magnet to move away from the spherical magnet and, to thereby, urge the first metacarpal bone of the patient to move away from the trapezium bone of the patient due to the magnetic repulsion force between the first magnetic pole of the cylindrical magnet and the first magnetic pole of the spherical magnet. In an exemplary embodiment, the cylindrical magnet and the spherical magnet are configured to distract the first carpometacarpal joint of the patient by urging the first metacarpal bone of the patient and the trapezium bone of the patient to move away from each other. [0011] In an exemplary embodiment, the metacarpal insertion part may be configured to be inserted into the proximal end of the first metacarpal bone of the patient. In an exemplary embodiment, the metacarpal insertion part may include a first hollow cylinder. In an exemplary embodiment, the cylindrical magnet may be disposed inside the first hollow cylinder.

[0012] In an exemplary embodiment, the first hollow cylinder may be configured to be inserted into the proximal end of the first metacarpal bone of the patient in such a way that the first carpometacarpal joint of the patient is closer to the first magnetic pole of the cylindrical magnet than the second magnetic pole of the cylindrical magnet. In an exemplary embodiment, a first end of the first hollow cylinder may be closed. In an exemplary embodiment, the first hollow cylinder may include a first opening at a second end of the first hollow cylinder. In an exemplary embodiment, the first opening may be configured to receive the cylindrical magnet. [0013] In an exemplary embodiment, the metacarpal insertion part may further include a first lid. In an exemplary embodiment, the first lid may be detachably attached to the second end of the first hollow cylinder. In an exemplary embodiment, the first lid may be configured to close the first opening.

[0014] In an exemplary embodiment, the metacarpal insertion part may further include a plurality of fixing ring-shaped elements. In an exemplary embodiment, the plurality of fixing ring-shaped elements may be attached to an outer surface of the first hollow cylinder. In an exemplary embodiment, the plurality of fixing ring-shaped elements may be configured to secure the first hollow cylinder inside the proximal end of the first metacarpal bone of the patient due to engagement of the plurality of fixing ring-shaped elements with the first metacarpal bone.

[0015] In an exemplary embodiment, the metacarpal insertion part may further include a first plurality of holes provided on the outer surface of the first hollow cylinder. In an exemplary embodiment, the first plurality of holes may be configured to allow growth of the first metacarpal bone into the first plurality of holes and allow the first metacarpal bone to be engaged with the first hollow cylinder due to the first metacarpal bone growth into the first plurality of holes and, to thereby, secure the first hollow cylinder inside the first metacarpal bone.

[0016] In an exemplary embodiment, the trapezium insertion part may further include a second hollow cylinder. In an exemplary embodiment, the spherical magnet may be disposed inside the second hollow cylinder. In an exemplary embodiment, the second hollow cylinder may be configured to be inserted into the trapezium bone of the patient in such a way that the first carpometacarpal joint of the patient being closer to the first magnetic pole of the spherical magnet than the second magnetic pole of the spherical magnet.

[0017] In an exemplary embodiment, a first end of the second hollow cylinder may be closed. In an exemplary embodiment, the second hollow cylinder may include a second opening at a second end of the second hollow cylinder. In an exemplary embodiment, the second opening may be configured to receive the spherical magnet.

[0018] In an exemplary embodiment, the trapezium insertion part may further include a second lid. In an exemplary embodiment, the second lid may be detachably attached to the second end of the second hollow cylinder. In an exemplary embodiment, the second lid may be configured to close the second opening.

[0019] In an exemplary embodiment, the trapezium insertion part may further include a plurality of fixing rods. In an exemplary embodiment, the plurality of fixing rods may be attached to an outer surface of the second hollow cylinder. In an exemplary embodiment, the plurality of fixing rods may be configured to secure the first hollow cylinder inside the trapezium bone of the patient due to engagement of the plurality of fixing rods with the trapezium bone.

[0020] In an exemplary embodiment, the trapezium insertion part may further include a second plurality of holes provided on the outer surface of the second hollow cylinder. In an exemplary embodiment, the second plurality of holes may be configured to allow growth of the trapezium bone and allow the trapezium bone to be engaged with the second hollow cylinder due to the trapezium bone growth into the second plurality of holes and, to thereby, secure the second hollow cylinder inside the trapezium bone.

[0021] In an exemplary embodiment, the first lid may further include a rotational fixing element attached to an outer surface of the first lid. In an exemplary embodiment, the rotational fixing element may be configured to minimize rotational movements of the metacarpal insertion part inside the proximal end of the first metacarpal bone of the patient due to engagement of the rotational fixing element with the first metacarpal bone.

[0022] In an exemplary embodiment, the rotational fixing element may include a third plurality of holes provided on the rotational fixing element. In an exemplary embodiment, the third plurality of holes may be configured to receive an amount of bone cement. In an exemplary embodiment, the amount of bone cement may be configured to secure the metacarpal insertion part inside the proximal end of the first metacarpal bone of the patient due to engagement of the rotational fixing element with the first metacarpal bone through the amount of bone cement. [0023] In an exemplary embodiment, each hole from the first plurality of holes, the second plurality of holes, and the third plurality of holes has a polygonal shape. In an exemplary embodiment, the first hollow cylinder, the first lid, the second hollow cylinder and the second lid may be made up of silicon, titanium nitride, gold, rhodium, or a combination thereof. In an exemplary embodiment, the metacarpal insertion part may be configured to be implanted in the first metacarpal bone of the patient and the trapezium insertion part may be configured to be implanted in the trapezium bone of the patient in such a way that a main longitudinal axis of the first hollow cylinder is perpendicular to a main longitudinal axis of the second hollow cylinder.

[0024] In an exemplary embodiment, the distraction system may further include an insertion guide system. In an exemplary embodiment, the insertion guide system may include a main rectangular block with a circular hole and a rectangular hole provided therein. In an exemplary embodiment, the main rectangular block may be configured to be placed onto a skin of the patient at the first carpometacarpal joint site and be fixedly attached to a hand of the patient by utilizing a plurality of pins and a plurality of pin receiving holes. In an exemplary embodiment, the plurality of receiving holes may be provided in the main rectangular block.

[0025] In an exemplary embodiment, the circular hole may be associated with the trapezium insertion part. In an exemplary embodiment, the circular hole may be configured to allow access to the trapezium bone of the patient. In an exemplary embodiment, the rectangular hole may be associated with the metacarpal insertion part. In an exemplary embodiment, the rectangular hole may be configured to allow access to the proximal end of the first metacarpal bone of the patient. In an exemplary embodiment, the main rectangular block may be configured to be fixedly attached to the hand of the patient in such a way that the circular hole is aligned with the trapezium bone and the rectangular hole is aligned with the first metacarpal bone

BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawing figures depict one or more implementations in accord with the present teachings, by way of example only, not by way of limitation. In the figures, like reference numerals refer to the same or similar elements.

[0027] FIG. 1 illustrates a distraction system for a first metacarpal joint of a patient, consistent with one or more exemplary embodiments of the present disclosure.

[0028] FIG. 2A illustrates a perspective view of a metacarpal insertion part, consistent with one or more exemplary embodiments of the present disclosure.

[0029] FIG. 2B illustrates an exploded view of a metacarpal insertion part, consistent with one or more exemplary embodiments of the present disclosure.

[0030] FIG. 2C illustrates another exploded view of a metacarpal insertion part, consistent with one or more exemplary embodiments of the present disclosure.

[0031] FIG. 2D illustrates a side view of a metacarpal insertion part, consistent with one or more exemplary embodiments of the present disclosure.

[0032] FIG. 2E illustrates a section side view of a metacarpal insertion part, consistent with one or more exemplary embodiments of the present disclosure.

[0033] FIG. 2F illustrates a top view of a metacarpal insertion part, consistent with one or more exemplary embodiments of the present disclosure.

[0034] FIG. 3A illustrates a perspective view of a trapezium insertion part, consistent with one or more exemplary embodiments of the present disclosure.

[0035] FIG. 3B illustrates an exploded view of a trapezium insertion part, consistent with one or more exemplary embodiments of the present disclosure.

[0036] FIG. 3C illustrates another exploded view of a trapezium insertion part, consistent with one or more exemplary embodiments of the present disclosure. [0037] FIG. 3D illustrates a side view of a trapezium insertion part, consistent with one or more exemplary embodiments of the present disclosure.

[0038] FIG. 3E illustrates another side view of a trapezium insertion part, consistent with one or more exemplary embodiments of the present disclosure. [0039] FIG. 3F illustrates a top view of a trapezium insertion part, consistent with one or more exemplary embodiments of the present disclosure.

[0040] FIG. 4 illustrates a first metacarpal joint in a scenario in which a metacarpal insertion part and a trapezium insertion part are implanted respectively in a first metacarpal bone and in a trapezium bone of the patient in such a way that similar magnetic poles of a cylindrical magnet and a spherical magnet are placed at two opposite sides of first metacarpal joint, consistent with one or more exemplary embodiments of the present disclosure.

[0041] FIG. 5A illustrates a perspective view of an insertion guide system, consistent with one or more exemplary embodiments of the present disclosure.

[0042] FIG. 5B illustrates a transparent view of an insertion guide system, consistent with one or more exemplary embodiments of the present disclosure.

DESCRIPTION OF EMBODIMENTS

[0044] In the following detailed description, numerous specific details are set forth by way of examples in order to provide a thorough understanding of the relevant teachings. However, it should be apparent that the present teachings may be practiced without such details. In other instances, well known methods, procedures, components, and/or circuitry have been described at a relatively high-level, without detail, in order to avoid unnecessarily obscuring aspects of the present teachings.

[0045] The following detailed description is presented to enable a person skilled in the art to make and use the methods and devices disclosed in exemplary embodiments of the present disclosure. For purposes of explanation, specific nomenclature is set forth to provide a thorough understanding of the present disclosure. However, it will be apparent to one skilled in the art that these specific details are not required to practice the disclosed exemplary embodiments. Descriptions of specific exemplary embodiments are provided only as representative examples. Various modifications to the exemplary implementations will be readily apparent to one skilled in the art, and the general principles defined herein may be applied to other implementations and applications without departing from the scope of the present disclosure. The present disclosure is not intended to be limited to the implementations shown, but is to be accorded the widest possible scope consistent with the principles and features disclosed herein.

[0046] The present disclosure is directed to exemplary embodiments of a distraction system for first carpometacarpal joint. In an exemplary embodiment, the disclosed distraction system may be used to distract a first carpometacarpal joint of a patient in order to treat painful thumb osteoarthritis of the patient. In an exemplary embodiment, utilizing the disclosed distraction system may prevent or slow down the progression of osteoarthritis by relieving stress on the first carpometacarpal joint of the patient. Furthermore, it may prevent further wear and tear and may allow the joint to recover.

[0047] In an exemplary embodiment, the disclosed distraction system may include a cylindrical magnet to be inserted into a proximal end of a first metacarpal bone of the patient and a spherical magnet to be inserted into a trapezium bone of the patient. A surgeon may insert the cylindrical magnet into the proximal end of the first metacarpal bone of the patient and also insert the spherical magnet into the trapezium bone of the patient in such a way that like magnetic poles of the cylindrical magnet and the spherical magnet are in front of each other at two opposite sides of the first carpometacarpal joint. When like magnetic poles of two magnets are close to each other, the two magnets may repel each other. Consequently, when like magnetic poles of the cylindrical magnet and the spherical magnet are in front of each other at two opposite sides of the first carpometacarpal joint, the cylindrical magnet and the spherical magnet may repel each other and, consequently, the first metacarpal bone and the trapezium bone may be urged to move away from each other and, thereby, the first metacarpal joint may be distracted.

[0048] FIG. 1 shows a distraction system 100 for a first metacarpal joint 150 of a patient, consistent with one or more exemplary embodiments of the present disclosure. As shown in FIG. 1, in an exemplary embodiment, distraction system 100 may include a metacarpal insertion part 102 and a trapezium insertion part 104. FIG. 2A shows a perspective view of metacarpal insertion part 102, consistent with one or more exemplary embodiments of the present disclosure. FIG. 2B shows an exploded view of metacarpal insertion part 102, consistent with one or more exemplary embodiments of the present disclosure. FIG. 2C shows another exploded view of metacarpal insertion part 102, consistent with one or more exemplary embodiments of the present disclosure. FIG. 2D shows a side view of metacarpal insertion part 102, consistent with one or more exemplary embodiments of the present disclosure. FIG. 2E shows a section side view of metacarpal insertion part 102, consistent with one or more exemplary embodiments of the present disclosure. FIG. 2F shows a top view of metacarpal insertion part 102, consistent with one or more exemplary embodiments of the present disclosure.

[0049] As shown in FIG. 2A-2F, in an exemplary embodiment, metacarpal insertion part 102 may include a cylindrical magnet 201, a first hollow cylinder 202, and a first lid 203. In an exemplary embodiment, cylindrical magnet 201 may be disposed inside first hollow cylinder 202. In an exemplary embodiment, a first end 222 of first hollow cylinder 202 may be closed. In an exemplary embodiment, first hollow cylinder 202 may include a first opening 225 at a second end 224 of first hollow cylinder 202. In an exemplary embodiment, first opening 225 may be configured to receive cylindrical magnet 201. In an exemplary embodiment, a user, for example a surgeon, may insert cylindrical magnet 201 into first hollow cylinder 202 through first opening 225. In an exemplary embodiment, first hollow cylinder 202 may be made up of silicon, titanium nitride, gold, rhodium, or a combination thereof. For purpose of reference, it should be understood that silicon, titanium nitride, gold, and rhodium are biocompatible, have biosafety, and do not stimulate immune system of the body. Therefore, it may be understood that when first hollow cylinder 202 is made up of silicon, titanium nitride, gold, rhodium, or a combination thereof, first hollow cylinder 202 may safely be implanted in a bone of the human body. In an exemplary embodiment, first hollow cylinder 202 may include a first coating on the outer surface of the first hollow cylinder 202. In an exemplary embodiment, the first coating may be made up of hydroxyapatite, bone cement, or a combination thereof. It may be understood that such a coating may cause and/or improve the adhesion between first hollow cylinder 202 and the bone of the patient. Furthermore, such a coating may reduce and/or limit the risk of infection.

[0050] In an exemplary embodiment, first lid 203 may be detachably attached to second end 224 of first hollow cylinder 202. In an exemplary embodiment, first lid 203 may be configured to close first opening 225. In an exemplary embodiment, a user, for example a surgeon, may insert cylindrical magnet 201 into first hollow cylinder 202 through first opening 225 and then close first opening 225 by attaching first lid 203 to second end 224 of first hollow cylinder 202. In an exemplary embodiment, metacarpal insertion part 102 may be configured to be inserted into a proximal end 1542 of a first metacarpal bone 154 of a patient. In an exemplary embodiment, the surgeon may insert cylindrical magnet 201 into first hollow cylinder 202 and attach first lid 203 to second end 224 of first hollow cylinder 202 and then may insert metacarpal insertion part 102 into proximal end 1542 of first metacarpal bone 154. In an exemplary embodiment, the surgeon may first provide a first receiving hole in first metacarpal bone 154 at proximal end 1542 of first metacarpal bone 154 and then insert metacarpal insertion part 102 into the first receiving hole. In an exemplary embodiment, first lid 203 may be made up of silicon, titanium nitride, gold, rhodium, or a combination thereof. For purpose of reference, it should be understood that silicon, titanium nitride, gold, and rhodium are biocompatible, have biosafety, and do not stimulate immune system of the body. Therefore, it may be understood that when first lid 203 is made up of silicon, titanium nitride, gold, rhodium, or a combination thereof, first lid 203 may safely be implanted in a bone of the human body.

[0051] In an exemplary embodiment, metacarpal insertion part 102 may further include a plurality of fixing ring-shaped elements 204. In an exemplary embodiment, plurality of fixing ring-shaped elements 204 may be attached to an outer surface of first hollow cylinder 202. In an exemplary embodiment, plurality of fixing ring-shaped elements 204 may be configured to secure first hollow cylinder 202 inside first metacarpal bone 154 due to engagement of plurality of fixing ring-shaped elements 204 with first metacarpal bone 154. In an exemplary embodiment, plurality of fixing ring-shaped elements 204 may be engaged with an inner surface of the first receiving hole and, thereby, first hollow cylinder 202 and metacarpal insertion part 102 may be secured inside the first receiving hole of first metacarpal bone 154.

[0052] In an exemplary embodiment, metacarpal insertion part 102 may further include a first plurality of holes 205 provided on the outer surface of first hollow cylinder 202. In an exemplary embodiment, first plurality of holes 205 may be configured to allow growth of first metacarpal bone 154 into first plurality of holes 205. In an exemplary embodiment, when first metacarpal bone 154 grow into first plurality of holes 205, metacarpal bone 154 may be engaged with first hollow cylinder 202 and, thereby, first hollow cylinder 202 and metacarpal insertion part 102 may be secured inside the first receiving hole of first metacarpal bone 154. In an exemplary embodiment, each hole from first plurality of holes 205 may have a polygonal shape. For example, a hole from first plurality of holes 205 may have a square shape.

[0053] FIG. 3A shows a perspective view of trapezium insertion part 104, consistent with one or more exemplary embodiments of the present disclosure. FIG. 3B shows an exploded view of trapezium insertion part 104, consistent with one or more exemplary embodiments of the present disclosure. FIG. 3C shows another exploded view of trapezium insertion part 104, consistent with one or more exemplary embodiments of the present disclosure. FIG. 3D shows a side view of trapezium insertion part 104, consistent with one or more exemplary embodiments of the present disclosure. FIG. 3E shows another side view of trapezium insertion part 104, consistent with one or more exemplary embodiments of the present disclosure. FIG. 3F shows a top view of trapezium insertion part 104, consistent with one or more exemplary embodiments of the present disclosure. [0054] As shown in FIG. 3A-3F, in an exemplary embodiment, trapezium insertion part 104 may include a spherical magnet 301, a second hollow cylinder 302, and a second lid 303. In an exemplary embodiment, spherical magnet 301 may be disposed inside second hollow cylinder 302. In an exemplary embodiment, a first end 322 of second hollow cylinder 302 may be closed. In an exemplary embodiment, second hollow cylinder 302 may include a second opening 325 at a second end 324 of second hollow cylinder 302. In an exemplary embodiment, second opening 325 may be configured to receive spherical magnet 301. In an exemplary embodiment, a user, for example a surgeon, may insert spherical magnet 301 into second hollow cylinder 302 through second opening 325. In an exemplary embodiment, second hollow cylinder 302 may be made up of silicon, titanium nitride, gold, rhodium, or a combination thereof. For purpose of reference, it should be understood that silicon, titanium nitride, gold, and rhodium are biocompatible, have biosafety, and do not stimulate immune system of the body. Therefore, it may be understood that when second hollow cylinder 302 is made up of silicon, titanium nitride, gold, rhodium, or a combination thereof, second hollow cylinder 302 may safely be implanted in a bone of the human body. In an exemplary embodiment, second hollow cylinder 302 may include a second coating on the outer surface of the second hollow cylinder 302. In an exemplary embodiment, the second coating may be made up of hydroxyapatite, bone cement, or a combination thereof. It may be understood that such a coating may cause and/or improve the adhesion between second hollow cylinder 302 and the bone of the patient. Furthermore, such a coating may reduce and/or limit the risk of infection. [0055] In an exemplary embodiment, second lid 303 may be detachably attached to second end 324 of second hollow cylinder 302. In an exemplary embodiment, second lid 303 may be configured to close second opening 325. In an exemplary embodiment, a user, for example a surgeon, may insert spherical magnet 301 into second hollow cylinder 302 through second opening 325 and then close second opening 325 by attaching second lid 303 to second end 324 of second hollow cylinder 302. In an exemplary embodiment, trapezium insertion part 104 may be configured to be inserted into a trapezium bone 152 of a patient. In an exemplary embodiment, the surgeon may insert spherical magnet 301 into second hollow cylinder 302 and attach second lid 303 to second end 324 of second hollow cylinder 302 and then may insert trapezium insertion part 104 into trapezium bone 152 of the patient. In an exemplary embodiment, the surgeon may first provide a second receiving hole in trapezium bone 152 at and then insert trapezium insertion part 104 into the second receiving hole. In an exemplary embodiment, second lid 303 may be made up of silicon, titanium nitride, gold, rhodium, or a combination thereof. For purpose of reference, it should be understood that silicon, titanium nitride, gold, and rhodium are biocompatible, have biosafety, and do not stimulate immune system of the body. Therefore, it may be understood that when second lid 303 is made up of silicon, titanium nitride, gold, rhodium, or a combination thereof, second lid 303 may safely be implanted in a bone of the human body.

[0056] For purpose of reference, it may be understood that each of cylindrical magnet 201 and spherical magnet 301 has a respective north magnetic pole and a respective south magnetic pole. Furthermore, it may be understood that if similar magnetic poles of two magnets are disposed close to each other, the magnetic repulsion force between the similar magnetic poles urge the magnets to repel each other. In an exemplary embodiment, the surgeon may insert metacarpal insertion part 102 into first metacarpal bone 154 and also insert trapezium insertion part 104 into trapezium bone 152 in such a way that similar magnetic poles of cylindrical magnet 201 and spherical magnet 301 are placed in front of each other at two opposite sides of first metacarpal joint 150. In an exemplary embodiment, when similar magnetic poles of cylindrical magnet 201 and spherical magnet 301 are placed in front of each other at two opposite sides of first metacarpal joint 150, the repulsion force between the similar magnetic poles may urge cylindrical magnet 201 and spherical magnet 301 to each other and, thereby, first metacarpal joint 150 may be distracted. For example, the surgeon may insert metacarpal insertion part 102 into first metacarpal bone 154 in such a way that a north magnetic pole of cylindrical magnet 201 is placed adjacent first metacarpal joint 150. The surgeon may also insert trapezium insertion part 104 into trapezium bone 152 in such a way that a north magnetic pole of spherical magnet 301 is placed adjacent first metacarpal joint 150. In this scenario, first metacarpal joint 150 may be distracted due to the repulsion force between north magnetic poles of cylindrical magnet 201 and spherical magnet 301. In an exemplary embodiment, the same may happen when south magnetic poles of cylindrical magnet 201 and spherical magnet 301 are placed at two opposite sides of first metacarpal joint 150. In an exemplary embodiment, each of cylindrical magnet 201 and spherical magnet 301 may be able to create a magnetic field with an intensity of 0.5 millitesal. In an exemplary embodiment, cylindrical magnet 201 and spherical magnet 301 may be configured to provide a magnetic repulsion force equal to 2 newtons between themselves. This repulsion force can be an appropriate force for distraction of first carpometacarpal joint. In an exemplary embodiment, cylindrical magnet 201 and spherical magnet 301 may provide a magnetic repulsion force that distract first metacarpal bone 154 and trapezium bone 152 by amount of 1.5 mm.

[0057] FIG. 4 shows first metacarpal joint 150 in a scenario in which metacarpal insertion part 102 and trapezium insertion part 104 are implanted respectively in first metacarpal bone 154 and in trapezium bone 152 of the patient in such a way that similar magnetic poles of cylindrical magnet 201 and spherical magnet 301 are placed at two opposite sides of first metacarpal joint 150, consistent with one or more exemplary embodiments of the present disclosure. In an exemplary embodiment, metacarpal insertion part 102 and trapezium insertion part 104 may be implanted respectively in first metacarpal bone 154 and trapezium bone 152 of the patient in such a way that a main longitudinal axis 227 of first hollow cylinder 202 is perpendicular to a main longitudinal axis 327 of second hollow cylinder 302.

[0058] In an exemplary embodiment, trapezium insertion part 104 may further include a plurality of fixing rod elements 304. In an exemplary embodiment, plurality of fixing rod elements 304 may be attached to an outer surface of second hollow cylinder 302. In an exemplary embodiment, plurality of fixing rod elements 304 may be configured to secure second hollow cylinder 302 inside trapezium bone 152 due to engagement of plurality of fixing rod elements 304 with trapezium bone 152. In an exemplary embodiment, plurality of fixing rod elements 304 may be engaged with an inner surface of the second receiving hole and, thereby, second hollow cylinder 302 and trapezium insertion part 104 may be secured inside the second receiving hole of trapezium bone 152.

[0059] In an exemplary embodiment, trapezium insertion part 104 may further include a second plurality of holes 305 provided on the outer surface of second hollow cylinder 302. In an exemplary embodiment, second plurality of holes 305 may be configured to allow growth of trapezium bone 152 into second plurality of holes 305. In an exemplary embodiment, when trapezium bone 152 grow into second plurality of holes 305, trapezium bone 152 may be engaged with second hollow cylinder 302 and, thereby, second hollow cylinder 302 and trapezium insertion part 103 may be secured inside the second receiving hole of trapezium bone 152. In an exemplary embodiment, each hole from second plurality of holes 305 may have a polygonal shape. For example, a hole from second plurality of holes 305 may have a square shape.

[0060] As further shown in FIG. 2C, in an exemplary embodiment, first lid 203 may further include a rotational fixing element 232. In an exemplary embodiment, rotational fixing element 232 may be attached to an outer surface 234 of the first lid 203. In an exemplary embodiment, rotational fixing element 232 may be configured to minimize rotational movements of the metacarpal insertion part 102 inside the proximal end of first metacarpal bone 154 of the patient due to engagement of rotational fixing element 232 with first metacarpal bone 154. In an exemplary embodiment, rotational fixing element 232 may include a third plurality of holes 2322 provided on rotational fixing element 232. In an exemplary embodiment, third plurality of holes 2322 may be configured to receive an amount of bone cement. In an exemplary embodiment, the amount of bone cement may be configured to secure metacarpal insertion part 102 inside the proximal end of first metacarpal bone 154 of the patient due to engagement of rotational fixing element 232 with first metacarpal bone 154 through the amount of bone cement. In an exemplary embodiment, each hole from third plurality of holes 2322 may have a polygonal shape. For example, a hole from third plurality of holes 2322 may have a square shape. In an exemplary embodiment, after inserting metacarpal insertion part 102 inside the proximal end of first metacarpal bone 154, the surgeon may fill the free space between metacarpal insertion part 102 and first metacarpal bone 154 by bone cement. The bone cement may fill third plurality of holes 2322 as well. In this way, first metacarpal bone 154 may be secured inside the first receiving hole.

[0061] As discussed above, distraction system 100 may be used as a lifelong prosthesis which may be implanted in a patient’s body and constantly distract first carpometacarpal joint of the patient which may prevent or slow down the progression of osteoarthritis by relieving stress on the first carpometacarpal joint of the patient. In an exemplary embodiment, the magnetic fields created by cylindrical magnet 201 and spherical magnet 301 may directly help recovery of first carpometacarpal joint of the patient as well. [0062] In an exemplary embodiment, distraction system 100 may further include an insertion guide system. FIG. 5A shows a perspective view of an insertion guide system 500, consistent with one or more exemplary embodiments of the present disclosure. FIG. 5B shows a transparent view of insertion guide system 500, consistent with one or more exemplary embodiments of the present disclosure. As shown in FIG. 5A and FIG. 5B, in an exemplary embodiment, insertion guide system 500 may include a main rectangular block 502 with a circular hole 504 and rectangular hole 506. In an exemplary embodiment, main rectangular block 502 may be configured to be placed onto a skin of the patient at first carpometacarpal joint site. In an exemplary embodiment, main rectangular block 502 may further be configured to be fixedly attached to the hand of the patient in such a way that circular hole 504 is aligned with trapezium bone 152 and rectangular hole 506 is aligned with first metacarpal bone 154. [0063] In an exemplary embodiment, circular hole 504 may be configured to allow access to trapezium bone 152 of the patient. In an exemplary embodiment, rectangular hole 506 may be configured to allow access to the proximal end of first metacarpal bone 154 of the patient. In an exemplary embodiment, the surgeon may create the first receiving hole by utilizing a medical drill and rectangular hole 506. In an exemplary embodiment, the surgeon may also insert metacarpal insertion part 102 into proximal end 1542 of first metacarpal bone 154 through rectangular hole 506. In an exemplary embodiment, the surgeon may create the second receiving hole by utilizing a medical drill and circular hole 504. In an exemplary embodiment, the surgeon may also insert trapezium insertion part 104 into trapezium bone 152 through circular hole 504.

[0064] In an exemplary embodiment, insertion guide system 500 may also include a plurality of pin receiving holes 508 provided in main rectangular block 502. In an exemplary embodiment, the surgeon may fix insertion guide system 500 to the patient’s hand by utilizing a plurality of pins and plurality of pin receiving holes 508.

[0065] While the foregoing has described what may be considered to be the best mode and/or other examples, it is understood that various modifications may be made therein and that the subject matter disclosed herein may be implemented in various forms and examples, and that the teachings may be applied in numerous applications, only some of which have been described herein. It is intended by the following claims to claim any and all applications, modifications and variations that fall within the true scope of the present teachings.

[0066] Unless otherwise stated, all measurements, values, ratings, positions, magnitudes, sizes, and other specifications that are set forth in this specification, including in the claims that follow, are approximate, not exact. They are intended to have a reasonable range that is consistent with the functions to which they relate and with what is customary in the art to which they pertain.

[0067] The scope of protection is limited solely by the claims that now follow . That scope is intended and should be interpreted to be as broad as is consistent with the ordinary meaning of the language that is used in the claims when interpreted in light of this specification and the prosecution history that follows and to encompass all structural and functional equivalents. Notwithstanding, none of the claims are intended to embrace subject matter that fails to satisfy the requirement of Ends 101, 102, or 103 of the Patent Act, nor should they be interpreted in such a way. Any unintended embracement of such subject matter is hereby disclaimed.

[0068] Except as stated immediately above, nothing that has been stated or illustrated is intended or should be interpreted to cause a dedication of any component, step, feature, object, benefit, advantage, or equivalent to the public, regardless of whether it is or is not recited in the claims. [0069] It will be understood that the terms and expressions used herein have the ordinary meaning as is accorded to such terms and expressions with respect to their corresponding respective spaces of inquiry and study except where specific meanings have otherwise been set forth herein. Relational terms such as first and second and the like may be used solely to distinguish one entity or action from another without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms “comprises,” “comprising,” or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by “a” or “an” does not, without further constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0070] The Abstract of the Disclosure is provided to allow the reader to quickly ascertain the nature of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims . In addition, in the foregoing Detailed Description, it can be seen that various features are grouped together in various implementations. This is for purposes of streamlining the disclosure, and is not to be interpreted as reflecting an intention that the claimed implementations require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive subject matter lies in less than all features of a single disclosed implementation. Thus, the following claims are hereby incorporated into the Detailed Description, with each claim standing on its own as a separately claimed subject matter.

[0071] While various implementations have been described, the description is intended to be exemplary, rather than limiting and it will be apparent to those of ordinary skill in the art that many more implementations and implementations are possible that are within the scope of the implementations. Although many possible combinations of features are shown in the accompanying figures and discussed in this detailed description, many other combinations of the disclosed features are possible. Any feature of any implementation may be used in combination with or substituted for any other feature or element in any other implementation unless specifically restricted. Therefore, it will be understood that any of the features shown and/or discussed in the present disclosure may be implemented together in any suitable combination. Accordingly, the implementations are not to be restricted except in light of the attached claims and their equivalents. Also, various modifications and changes may be made within the scope of the attached claims.

Claims

24 What is claimed is:

1. A distraction system for first carpometacarpal joint, the distraction system comprising: a metacarpal insertion part comprising a cylindrical magnet, the cylindrical magnet configured to be inserted into a proximal end of a first metacarpal bone of a patient in such a way that a first carpometacarpal joint of the patient being closer to a first magnetic pole of the cylindrical magnet than a second magnetic pole of the cylindrical magnet, the metacarpal insertion part further comprising: a first hollow cylinder, the cylindrical magnet disposed inside the first hollow cylinder, the first hollow cylinder configured to be inserted into the proximal end of the first metacarpal bone of the patient in such a way that the first carpometacarpal joint of the patient being closer to the first magnetic pole of the cylindrical magnet than the second magnetic pole of the cylindrical magnet, a first end of the first hollow cylinder being closed, the first hollow cylinder comprising a first opening at a second end of the first hollow cylinder, the first opening configured to receive the cylindrical magnet; a first lid detachably attached to the second end of the first hollow cylinder, the first lid configured to close the first opening; a plurality of fixing ring-shaped elements attached to an outer surface of the first hollow cylinder, the plurality of fixing ring-shaped elements configured to secure the first hollow cylinder inside the proximal end of the first metacarpal bone of the patient due to engagement of the plurality of fixing ringshaped elements with the first metacarpal bone; and a first plurality of holes provided on the outer surface of the first hollow cylinder, the first plurality of holes configured to: allow growth of the first metacarpal bone into the first plurality of holes; and allow the first metacarpal bone to be engaged with the first hollow cylinder due to the first metacarpal bone growth into the first plurality of holes and, to thereby, secure the first hollow cylinder inside the first metacarpal bone; a trapezium insertion part comprising a spherical magnet, the spherical magnet configured to be inserted into a trapezium bone of the patient in such a way that the first carpometacarpal joint of the patient being closer to a first magnetic pole of the spherical magnet than a second magnetic pole of the cylindrical magnet, the trapezium insertion part comprising: a second hollow cylinder, the spherical magnet disposed inside the second hollow cylinder, the second hollow cylinder configured to be inserted into the trapezium bone of the patient in such a way that the first carpometacarpal joint of the patient being closer to the first magnetic pole of the spherical magnet than the second magnetic pole of the spherical magnet, a first end of the second hollow cylinder being closed, the second hollow cylinder comprising a second opening at a second end of the second hollow cylinder, the second opening configured to receive the spherical magnet; a second lid detachably attached to the second end of the second hollow cylinder, the second lid configured to close the second opening; a plurality of fixing rods attached to an outer surface of the second hollow cylinder, the plurality of fixing rods configured to secure the first hollow cylinder inside the trapezium bone of the patient due to engagement of the plurality of fixing rods with the trapezium bone; and a second plurality of holes provided on the outer surface of the second hollow cylinder, the second plurality of holes configured to: allow growth of the trapezium bone; and allow the trapezium bone to be engaged with the second hollow cylinder due to the trapezium bone growth into the second plurality of holes and, to thereby, secure the second hollow cylinder inside the trapezium bone; and an insertion guide system, the insertion guide system comprising: a main rectangular block configured to: be placed onto a skin of the patient at the first carpometacarpal joint site; and be fixedly attached to a hand of the patient by utilizing a plurality of pins and a plurality of pin receiving holes, the plurality of receiving holes provided in the main rectangular block; a circular hole provided in the main rectangular block, the circular hole associated with the trapezium insertion part, the circular hole configured to allow access to the trapezium bone of the patient; and a rectangular hole provided in the main rectangular block, the rectangular hole associated with the metacarpal insertion part, the rectangular hole 27 configured to allow access to the proximal end of the first metacarpal bone of the patient; wherein: the first magnetic pole of the cylindrical magnet is the same as the first magnetic pole of the spherical magnet; the cylindrical magnet is configured to urge the spherical magnet to move away from the cylindrical magnet and, to thereby, urge the trapezium bone of the patient to move away from the first metacarpal bone of the patient due to the magnetic repulsion force between the first magnetic pole of the cylindrical magnet and the first magnetic pole of the spherical magnet; the spherical magnet is configured to urge the cylindrical magnet to move away from the spherical magnet and, to thereby, urge the first metacarpal bone of the patient to move away from the trapezium bone of the patient due to the magnetic repulsion force between the first magnetic pole of the cylindrical magnet and the first magnetic pole of the spherical magnet; the cylindrical magnet and the spherical magnet are configured to distract the first carpometacarpal joint of the patient by urging the first metacarpal bone of the patient and the trapezium bone of the patient to move away from each other; the first lid further comprises a rotational fixing element attached to an outer surface of the first lid, the rotational fixing element configured to minimize rotational movements of the metacarpal insertion part inside the 28 proximal end of the first metacarpal bone of the patient due to engagement of the rotational fixing element with the first metacarpal bone; and the rotational fixing element comprises a third plurality of holes provided on the rotational fixing element, the third plurality of holes configured to receive an amount of bone cement, the amount of bone cement configured to secure the metacarpal insertion part inside the proximal end of the first metacarpal bone of the patient due to engagement of the rotational fixing element with the first metacarpal bone through the amount of bone cement; each hole from the first plurality of holes, the second plurality of holes, and the third plurality of holes has a square shape; the first hollow cylinder, the first lid, the second hollow cylinder, and the second lid are made up of silicon, titanium nitride, gold, rhodium, or a combination thereof; the first hollow cylinder comprises a first coating on the outer surface of the first hollow cylinder, the first coating made up of hydroxyapatite, bone cement, or a combination thereof; the second hollow cylinder comprises a second coating on the outer surface of the second hollow cylinder, the second coating made up of hydroxyapatite, bone cement, or a combination thereof; the metacarpal insertion part is configured to be implanted in the first metacarpal bone of the patient and the trapezium insertion part is configured to be implanted in the trapezium bone of the patient in such a way that a main 29 longitudinal axis of the first hollow cylinder being perpendicular to a main longitudinal axis of the second hollow cylinder; and the main rectangular block is configured to be fixedly attached to the hand of the patient in such a way that the circular hole is aligned with the trapezium bone and the rectangular hole is aligned with the first metacarpal bone.

2. A distraction system for first carpometacarpal joint, the distraction system comprising: a metacarpal insertion part comprising a cylindrical magnet, the cylindrical magnet configured to be inserted into a proximal end of a first metacarpal bone of a patient in such a way that a first carpometacarpal joint of the patient being closer to a first magnetic pole of the cylindrical magnet than a second magnetic pole of the cylindrical magnet; and a trapezium insertion part comprising a spherical magnet, the spherical magnet configured to be inserted into a trapezium bone of the patient in such a way that the first carpometacarpal joint of the patient being closer to a first magnetic pole of the spherical magnet than a second magnetic pole of the cylindrical magnet; wherein: the first magnetic pole of the cylindrical magnet is the same as the first magnetic pole of the spherical magnet; the cylindrical magnet is configured to urge the spherical magnet to move away from the cylindrical magnet and, to thereby, urge the trapezium bone of the patient to move away from the first metacarpal bone of the patient due to the magnetic repulsion force between the first magnetic pole of the cylindrical magnet and the first magnetic pole of the spherical magnet; 30 the spherical magnet is configured to urge the cylindrical magnet to move away from the spherical magnet and, to thereby, urge the first metacarpal bone of the patient to move away from the trapezium bone of the patient due to the magnetic repulsion force between the first magnetic pole of the cylindrical magnet and the first magnetic pole of the spherical magnet; and the cylindrical magnet and the spherical magnet are configured to distract the first carpometacarpal joint of the patient by urging the first metacarpal bone of the patient and the trapezium bone of the patient to move away from each other.

3. The distraction system of claim 2, wherein: the metacarpal insertion part is configured to be inserted into the proximal end of the first metacarpal bone of the patient; and the metacarpal insertion part further comprises: a first hollow cylinder, the cylindrical magnet disposed inside the first hollow cylinder, the first hollow cylinder configured to be inserted into the proximal end of the first metacarpal bone of the patient in such a way that the first carpometacarpal joint of the patient being closer to the first magnetic pole of the cylindrical magnet than the second magnetic pole of the cylindrical magnet, a first end of the first hollow cylinder being closed, the first hollow cylinder comprising a first opening at a second end of the first hollow cylinder, the first opening configured to receive the cylindrical magnet; and 31 a first lid detachably attached to the second end of the first hollow cylinder, the first lid configured to close the first opening.

4. The distraction system of claim 3, wherein the metacarpal insertion part further comprises: a plurality of fixing ring-shaped elements attached to an outer surface of the first hollow cylinder, the plurality of fixing ring-shaped elements configured to secure the first hollow cylinder inside the proximal end of the first metacarpal bone of the patient due to engagement of the plurality of fixing ring-shaped elements with the first metacarpal bone; and a first plurality of holes provided on the outer surface of the first hollow cylinder, the first plurality of holes configured to: allow growth of the first metacarpal bone into the first plurality of holes; and allow the first metacarpal bone to be engaged with the first hollow cylinder due to the first metacarpal bone growth into the first plurality of holes and, to thereby, secure the first hollow cylinder inside the first metacarpal bone.

5. The distraction system of claim 4, wherein the trapezium insertion part further comprises: a second hollow cylinder, the spherical magnet disposed inside the second hollow cylinder, the second hollow cylinder configured to be inserted into the trapezium bone of the patient in such a way that the first carpometacarpal joint of the patient being closer to the first magnetic pole of the spherical magnet than the second magnetic pole of the spherical magnet, a first end of the second hollow cylinder being closed, the second hollow cylinder comprising 32 a second opening at a second end of the second hollow cylinder, the second opening configured to receive the spherical magnet; and a second lid detachably attached to the second end of the second hollow cylinder, the second lid configured to close the second opening.

6. The distraction system of claim 5, wherein the trapezium insertion part further comprises: a plurality of fixing rods attached to an outer surface of the second hollow cylinder, the plurality of fixing rods configured to secure the first hollow cylinder inside the trapezium bone of the patient due to engagement of the plurality of fixing rods with the trapezium bone; and a second plurality of holes provided on the outer surface of the second hollow cylinder, the second plurality of holes configured to: allow growth of the trapezium bone; and allow the trapezium bone to be engaged with the second hollow cylinder due to the trapezium bone growth into the second plurality of holes and, to thereby, secure the second hollow cylinder inside the trapezium bone.

7. The distraction system of claim 6, wherein: the first lid further comprises a rotational fixing element attached to an outer surface of the first lid, the rotational fixing element configured to minimize rotational movements of the metacarpal insertion part inside the proximal end of the first metacarpal bone of the patient due to engagement of the rotational fixing element with the first metacarpal bone; and 33 the rotational fixing element comprises a third plurality of holes provided on the rotational fixing element, the third plurality of holes configured to receive an amount of bone cement, the amount of bone cement configured to secure the metacarpal insertion part inside the proximal end of the first metacarpal bone of the patient due to engagement of the rotational fixing element with the first metacarpal bone through the amount of bone cement.

8. The distraction system of claim 7, wherein each hole from the first plurality of holes, the second plurality of holes, and the third plurality of holes has a square shape.

9. The distraction system of claim 8, wherein the first hollow cylinder, the first lid, the second hollow cylinder and the second lid are made up of silicon, titanium nitride, gold, rhodium, or a combination thereof.

10. The distraction system of claim 9, wherein: the first hollow cylinder comprises a first coating on the outer surface of the first hollow cylinder, the first coating made up of hydroxyapatite, bone cement, or a combination thereof; and the second hollow cylinder comprises a second coating on the outer surface of the second hollow cylinder, the second coating made up of hydroxyapatite, bone cement, or a combination thereof.

11. The distraction system of claim 10, wherein the metacarpal insertion part is configured to be implanted in the first metacarpal bone of the patient and the trapezium insertion part is configured to be implanted in the trapezium bone of the patient in such a way that a main 34 longitudinal axis of the first hollow cylinder being perpendicular to a main longitudinal axis of the second hollow cylinder.

12. The distraction system of claim 11, further comprising an insertion guide system, the insertion guide system comprising: a main rectangular block configured to: be placed onto a skin of the patient at the first carpometacarpal joint site; and be fixedly attached to a hand of the patient by utilizing a plurality of pins and a plurality of pin receiving holes, the plurality of receiving holes provided in the main rectangular block; a circular hole provided in the main rectangular block, the circular hole associated with the trapezium insertion part, the circular hole configured to allow access to the trapezium bone of the patient; and a rectangular hole provided in the main rectangular block, the rectangular hole associated with the metacarpal insertion part, the rectangular hole configured to allow access to the proximal end of the first metacarpal bone of the patient; wherein the main rectangular block is configured to be fixedly attached to the hand of the patient in such a way that the circular hole is aligned with the trapezium bone and the rectangular hole is aligned with the first metacarpal bone.