US20200368032A1 - Implants, systems and methods of using the same - Google Patents
Implants, systems and methods of using the same Download PDFInfo
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- US20200368032A1 US20200368032A1 US16/947,640 US202016947640A US2020368032A1 US 20200368032 A1 US20200368032 A1 US 20200368032A1 US 202016947640 A US202016947640 A US 202016947640A US 2020368032 A1 US2020368032 A1 US 2020368032A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/40—Joints for shoulders
- A61F2/4081—Glenoid components, e.g. cups
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30721—Accessories
- A61F2/30749—Fixation appliances for connecting prostheses to the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/4612—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of shoulders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/30224—Three-dimensional shapes cylindrical
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/30242—Three-dimensional shapes spherical
- A61F2002/30245—Partial spheres
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30433—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
- A61F2002/30891—Plurality of protrusions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/40—Joints for shoulders
- A61F2/4081—Glenoid components, e.g. cups
- A61F2002/4085—Glenoid components, e.g. cups having a convex shape, e.g. hemispherical heads
Landscapes
- Health & Medical Sciences (AREA)
- Transplantation (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Vascular Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physical Education & Sports Medicine (AREA)
- Prostheses (AREA)
Abstract
Description
- This application is a continuation of U.S. patent application Ser. No. 16/799,501 filed Feb. 24, 2020 and entitled Implants, Systems and Methods of Using Same, and issuing as U.S. Pat. No. 10,736,751 on Aug. 11, 2020, which is a continuation of PCT/US2019/043990 filed on Jul. 29, 2019 and entitled Implants, Systems and Methods of Using Same, which claims priority benefit under 35 U.S.C. § 119(e) of U.S. provisional application No. 62/711,449 filed Jul. 27, 2018, which are incorporated herein by reference in their entireties.
- The present invention relates generally to general surgery, orthopedic implants used for replacing an articulation surface in a joint, such as shoulder prostheses. More specifically, but not exclusively, the present invention relates to glenoid implants for reverse shoulder arthroplasties, as well as methods for using the same.
- Shoulder replacement is a surgical procedure in which all or part of the glenohumeral joint is replaced by a prosthetic implant. Such joint replacement surgery generally is conducted to relieve arthritis pain or fix severe physical joint damage.
- Shoulder replacement surgery is an option for treatment of severe arthritis of the shoulder joint. Arthritis is a condition that affects the cartilage of the joints. As the cartilage lining wears away, the protective lining between the bones is lost. When this happens, painful bone-on-bone arthritis develops. Severe shoulder arthritis is quite painful, and it can cause restriction of motion. While this may be tolerated with some medications and lifestyle adjustments, there may come a time when surgical treatment is necessary.
- There are a few major approaches to access the shoulder joint. The first is the deltopectoral approach, which saves the deltoid, but requires the subscapularis to be cut. The second is the trans deltoid approach, which provides a straight on approach at the glenoid. However, during this approach the deltoid is put at risk for potential damage.
- Shoulder replacement, also known as shoulder arthroplasty or glenohumeral arthroplasty, was pioneered by the French surgeon Jules Emile Pean in 1893. His procedure consisted of physically smoothing the shoulder joint and implanting platinum and rubber materials. The next notable case in the evolution of shoulder replacement procedures was in 1955 when Charles Neer conducted the first hemiarthroplasty, essentially replacing only the humeral head, leaving the natural shoulder socket, or glenoid, intact. This procedure grew exponentially in popularity as time progressed; however, patients often developed cartilage loss on their glenoid surface as well, leading to pain and glenoid erosion. This prompted the development of a procedure to replace not only the humeral component, but the glenoid component as well.
- Throughout the development of the procedures, it became well accepted that the rotator cuff muscles were essential to producing the best outcomes in terms of strength, range of motion, and a decrease in pain. In addition to this finding, physical constraints of the normal ball-and-socket anatomy of the shoulder limited most developments in one way or another. For example, a heavily constrained system limited range of motion and the inherent anatomy of the glenoid proved difficult to cement prosthetics and fixate components without fracturing it. These challenges and high rates of failure led to the development of the reverse total shoulder arthroplasty to overcome the limitations imposed by the natural shoulder anatomy.
- The 1970s saw an exponential increase in surgical approaches using this methodology, and the number and variation of surgical techniques are many. However, in 1985 Paul Grammont emerged with a superior technique that is the basis for most reverse shoulder replacement procedures today.
- In traditional total shoulder arthroplasty, the approach begins with separating the deltoid muscle from the pectoral muscles, facilitating access to the shoulder (glenohumeral) joint through a relatively nerve free passageway. The shoulder joint is initially covered by the rotator cuff muscles (subscapularis, supraspinatus, infraspinatus & teres minor) and the joint capsule (glenohumeral ligaments). Typically, a single rotator cuff muscle is identified and cut to allow direct access to the shoulder joint. As this point, the surgeon can remove the arthritic portions of the joint and then secure the ball and socket prostheses within the joint.
- The development of safer, more effective techniques has led to increased use of reverse total shoulder arthroplasty. Reverse total shoulder arthroplasties are typically indicated when the rotator cuff muscles are severely damaged.
- Many existing reverse shoulder systems require a baseplate and a glenosphere. These systems generally differ from one another in how the baseplate is fastened to the glenoid cavity and how the glenosphere becomes engaged to the baseplate. In some systems, the baseplate may be fastened to the glenoid cavity of the scapula by a plurality of screws and a glenosphere having a convex joint surface may be screwed into the baseplate using an axial threaded feature and/or taper that is a part of the baseplate. In other systems, the glenosphere may engage the baseplate solely via a taper connection.
- In cases where the glenosphere becomes engaged to the baseplate through either a threaded or taper connection, the glenosphere and baseplate may become separated after a certain length of time. This may cause the glenosphere to tilt with respect to the baseplate or in some cases even separate therefrom. In either situation, the baseplate and glenosphere become misaligned.
- Some systems include first fastening a central screw to a glenosphere and then guiding the connection between the baseplate and glenosphere via the central screw. Guiding the connection between the baseplate and glenosphere is generally an important consideration due to minimal access and visibility that the surgeon may have during a reverse shoulder procedure. Access to the baseplate is generally narrow making it relatively difficult for the surgeon to have the visibility needed to correctly align the engagement between a baseplate and glenosphere.
- What is needed in the art is a shoulder implant that improves upon prior art devices by providing design advantages that result in less bone loss, improved bone graft retention, and greater initial and long-term implant fixation.
- Aspects of the present disclosure provide glenoid implants for anatomic shoulder arthroplasties. The present invention also provides for methods for using the glenoid implants.
- In one aspect, provided herein is an implant that includes a baseplate, a central screw extending through a central bore in the baseplate, and a coupling member engaging a portion of the central bore of the baseplate.
- In another aspect, provided herein is are surgical methods for inserting the implants.
- These, and other objects, features and advantages of this invention will become apparent from the following detailed description of the various aspects of the invention taken in conjunction with the accompanying drawings.
- The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the detailed description herein, serve to explain the principles of the invention. The drawings are only for purposes of illustrating preferred embodiments and are not to be construed as limiting the invention. It is emphasized that, in accordance with the standard practice in the industry, various features are not drawn to scale. In fact, the dimensions of the various features may be arbitrarily increased or reduced for clarity of discussion. The foregoing and other objects, features and advantages of the invention are apparent from the following detailed description taken in conjunction with the accompanying drawings in which:
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FIG. 1 is a first perspective view of an embodiment of a glenoid implant, in accordance with an aspect of the present disclosure; -
FIG. 2 is a second perspective view of the glenoid implant ofFIG. 1 , in accordance with an aspect of the present disclosure; -
FIG. 3 is a first side view of the glenoid implant ofFIG. 1 , in accordance with an aspect of the present disclosure; -
FIG. 4 is a second side view of the glenoid implant ofFIG. 1 , in accordance with an aspect of the present disclosure; -
FIG. 5 is a top view of the glenoid implant ofFIG. 1 , in accordance with an aspect of the present disclosure; -
FIG. 6 is a bottom view of the glenoid implant ofFIG. 1 , in accordance with an aspect of the present disclosure; -
FIG. 7 is a first cross-sectional view of the glenoid implant ofFIG. 1 taken along line 7-7 inFIG. 5 , in accordance with an aspect of the present disclosure; -
FIG. 8 is a second cross-sectional view of the glenoid implant ofFIG. 1 taken along line 8-8 inFIG. 5 , in accordance with an aspect of the present disclosure; -
FIG. 9 is an exploded, first perspective view of the glenoid implant ofFIG. 1 , in accordance with an aspect of the present disclosure; -
FIG. 10 is an exploded, second perspective view of the glenoid implant ofFIG. 1 , in accordance with an aspect of the present disclosure; -
FIG. 11 is an exploded, first side view of the glenoid implant ofFIG. 1 , in accordance with the present disclosure; -
FIG. 12 is an exploded, second side view of the glenoid implant ofFIG. 1 , in accordance with an aspect of the present disclosure; -
FIG. 13 is a lateral view of the glenoid implant ofFIG. 1 , in accordance with an aspect of the present disclosure; -
FIG. 14 is a medial view of the glenoid implant ofFIG. 1 , in accordance with an aspect of the present disclosure; -
FIG. 15 is an exploded, cross-sectional side view of the components of the glenoid implant ofFIG. 1 , in accordance with an aspect of the present disclosure; -
FIG. 16 is a side assembly view of another glenoid implant, in accordance with an aspect of the present disclosure; -
FIG. 17 is another side view of the glenoid implant ofFIG. 16 , in accordance with an aspect of the present disclosure; -
FIG. 18 is yet another side view of the glenoid implant ofFIG. 16 , in accordance with an aspect of the present disclosure; -
FIG. 19 is a top perspective view of the glenoid implant ofFIG. 16 , in accordance with an aspect of the present disclosure; -
FIG. 20 is a bottom perspective view of the glenoid implant ofFIG. 16 , in accordance with an aspect of the present disclosure; -
FIG. 21 is a side cross-sectional view of the glenoid implant ofFIG. 16 , in accordance with an aspect of the present disclosure; -
FIG. 22 is an exploded, side view of the glenoid implant ofFIG. 16 , in accordance with an aspect of the present disclosure; -
FIG. 23 is a top perspective view of a baseplate of the glenoid implant ofFIG. 16 , in accordance with an aspect of the present disclosure; -
FIG. 24 is a bottom view of the baseplate ofFIG. 23 , in accordance with an aspect of the present disclosure; -
FIG. 25 is a side view of the baseplate ofFIG. 23 , in accordance with an aspect of the present disclosure; -
FIG. 26 is another side view of the baseplate ofFIG. 23 , in accordance with an aspect of the present disclosure; -
FIG. 27 is another side view of the baseplate ofFIG. 23 , in accordance with an aspect of the present disclosure; -
FIG. 28 is a cross-sectional side view of the baseplate ofFIG. 23 , in accordance with an aspect of the present disclosure; -
FIG. 29 is a top perspective view of a central screw for use with the glenoid implant ofFIG. 16 , in accordance with an aspect of the present disclosure; -
FIG. 30 is a side view of the central screw ofFIG. 29 , in accordance with an aspect of the present disclosure; -
FIG. 31 is a cross-sectional side view of the central screw ofFIG. 29 , in accordance with an aspect of the present invention; -
FIG. 32 is a top perspective view of a peripheral compression screw for use with the glenoid implant ofFIG. 16 , in accordance with an aspect of the present disclosure; -
FIG. 33 is a side view of the peripheral compression screw ofFIG. 32 , in accordance with an aspect of the present disclosure; -
FIG. 34 is a cross-sectional side view of the peripheral compression screw ofFIG. 32 , in accordance with an aspect of the present disclosure; -
FIG. 35 is a top perspective view of a modular locking taper for use with the glenoid implant ofFIG. 16 ofFIG. 32 , in accordance with an aspect of the present disclosure; -
FIG. 36 is a side view of the modular locking taper ofFIG. 35 , in accordance with an aspect of the present disclosure; -
FIG. 37 is a cross-sectional side view of the modular locking taper ofFIG. 35 , in accordance with an aspect of the present disclosure; -
FIG. 38 is a top perspective view of a glenosphere of the glenoid implant ofFIG. 16 , in accordance with an aspect of the present disclosure; -
FIG. 39 is a bottom perspective view of the glenosphere ofFIG. 38 , in accordance with an aspect of the present disclosure; -
FIG. 40 is a top view of the glenosphere ofFIG. 38 , in accordance with an aspect of the present disclosure; -
FIG. 41 is a side view of the glenosphere ofFIG. 38 , in accordance with an aspect of the present disclosure; -
FIG. 42 is a cross-sectional side view of the glenosphere ofFIG. 38 , in accordance with an aspect of the present disclosure; -
FIG. 43 is a top perspective view of a post for use with the glenoid implant ofFIG. 16 , in accordance with an aspect of the present disclosure; -
FIG. 44 is a side view of the post ofFIG. 43 , in accordance with an aspect of the present disclosure; and -
FIG. 45 is a cross-sectional side view of the post ofFIG. 43 , in accordance with an aspect of the present disclosure. - Generally stated, disclosed herein are glenoid implants for shoulder prostheses. Further, surgical methods for using the glenoid implants are discussed.
- In this detailed description and the following claims, the words proximal, distal, anterior, posterior, medial, lateral, superior and inferior are defined by their standard usage for indicating a particular part of a bone or implant according to the relative disposition of the natural bone or directional terms of reference. For example, “proximal” means the portion of a device or implant nearest the torso, while “distal” indicates the portion of the device or implant farthest from the torso. As for directional terms, “anterior” is a direction towards the front side of the body, “posterior” means a direction towards the back side of the body, “medial” means towards the midline of the body, “lateral” is a direction towards the sides or away from the midline of the body, “superior” means a direction above and “inferior” means a direction below another object or structure.
- As used herein, the word “exemplary” or “illustrative” means “serving as an example, instance, or illustration.” Any implementation described herein as “exemplary” or “illustrative” is not necessarily to be construed as preferred or advantageous over other implementations. Moreover, in the present description, the terms “upper”, “lower”, “left”, “rear”, “right”, “front”, “vertical”, “horizontal”, and derivatives thereof shall relate to the invention as oriented in the first figure of each embodiment.
- Similarly, positions or directions may be used herein with reference to anatomical structures or surfaces. For example, as the current implants, devices, systems and methods are described herein with reference to use with the bones of the shoulder, the bones of the shoulder and upper arm may be used to describe the surfaces, positions, directions or orientations of the implants, devices, systems and methods. Further, the implants, devices, systems and methods, and the aspects, components, features and the like thereof, disclosed herein are described with respect to one side of the body for brevity purposes. However, as the human body is relatively symmetrical or mirrored about a line of symmetry (midline), it is hereby expressly contemplated that the implants, devices, systems and methods, and the aspects, components, features and the like thereof, described and/or illustrated herein may be changed, varied, modified, reconfigured or otherwise altered for use or association with another side of the body for a same or similar purpose without departing from the spirit and scope of the invention. For example, the implants, devices, systems and methods, and the aspects, components, features and the like thereof, described herein with respect to the right shoulder may be mirrored so that they likewise function with the left shoulder and vice versa. Further, the implants, devices, systems and methods, and the aspects, components, features and the like thereof, disclosed herein are described with respect to the shoulder for brevity purposes, but it should be understood that the implants, devices, systems and methods may be used with other bones of the body having similar structures, for example the lower extremity, and more specifically, with the bones of the ankle, foot, and leg.
- Referring to the drawings, wherein like reference numerals are used to indicate like or analogous components throughout the several views, and with particular reference to
FIGS. 1-15 , there is illustrated an embodiment of a glenoid implant or reverseglenoid implant 100. Theglenoid implant 100 includes a first end orlateral end 102 and a second end ormedial end 104. Thefirst end 102 is positioned opposite thesecond end 104. Theglenoid implant 100 also includes abaseplate 110, acentral screw 130, at least oneperipheral screw 150, acoupling member 160, aglenosphere 180, and apost 200. Thecentral screw 130 is inserted through abore 116 of thebaseplate 110. Next, thecoupling member 160 engages thebaseplate 110 on a first end to secure thecentral screw 130 within thebore 116. The second end of thecoupling member 160 is received within theglenosphere 180. Then, apost 200 may extend through theglenosphere 180 and thecoupling member 160 and into therecess 136 of thecentral screw 130. The at least oneperipheral screw 150 may be inserted through at least oneperipheral bore 122 before securing theglenosphere 180 to thecoupling member 160 with thepost 200. - With continued reference to
FIGS. 7-15 , thebaseplate 110 includes anupper surface 112 with a cylindrical shape and a lower surface orbottom surface 114. Thebaseplate 110 may include, for example, a constant or continuous exterior ring surrounding theboards 122 and keels 124. Thebaseplate 110 may also include acentral bore 116 extending through thebaseplate 110 from theupper surface 112 to thelower surface 114. As shown inFIGS. 7, 8 and 15 , thecentral bore 116 may include, for example, a first section or proximal interior threadedsection 118 extending into thebaseplate 110 from theupper surface 112. In addition, thecentral bore 116 may include, for example, a second section or distalnon-threaded section 120 extending from thefirst section 118 to thelower surface 114 of thebaseplate 110. Thebaseplate 110 may also include a plurality ofperipheral bores 122 extending through thebaseplate 110 from theupper surface 112 to thelower surface 114. Thebores 122 may be positioned, for example, equally spaced around the circumference of thebaseplate 110 or alternatively, not equally spaced around the circumference of thebaseplate 110. In the depicted embodiment, the plurality ofperipheral bores 122 includes threeperipheral bores 122. Thebottom surface 114 of thebaseplate 110 may be, for example, curved or arced. Thebaseplate 110 may also include a plurality of discrete arcuate keels, ridges, orprotrusions 124. Theprotrusions 124 may extend away from thebottom surface 114 of thebaseplate 110. Thebaseplate 110 may also include a plurality of throughopenings 126 extending through thebaseplate 110 from theupper surface 112 to thelower surface 114. The throughopenings 126 may, for example, be positioned between the plurality ofperipheral boards 122 and positioned adjacent to the plurality ofprotrusions 124 on thelower surface 114 of thebaseplate 110. - The
central screw 130 as shown inFIGS. 7-15 may include a proximalnon-threaded section 132 and a distal threadedsection 142. The distal threadedsection 142 may extend away from a bottom of the proximalnon-threaded section 132. Theproximal section 132 may include ahead portion 134 positioned at a first end of thecentral screw 130. Thehead portion 134 may have, for example, a diameter larger than the diameter of the main portion of theproximal section 132 of thecentral screw 130. Theproximal section 132 may also include arecess 136 extending into theproximal section 132 from the first end of thecentral screw 130. Therecess 136 may include a first section or proximalfemale section 138 and a second section or threadedportion 140. Thefirst section 138 may extend from the first end of thecentral screw 130 toward the second end and thesecond section 140 may extend from a bottom of thefirst section 138 to a bottom of therecess 136. Thefirst section 138 may be, for example, a drive feature for engaging a tool for inserting or removing thecentral screw 130. Thesecond section 140 may be, for example, threaded for receiving acorresponding threads 210 of thepost 200. Theproximal section 132 may have, for example, a texture or coating to provide for porous fixation. Theproximal section 132 may be, for example, configured or sized and shaped to conserve bone. The distal threadedsection 142 may be, for example, threaded to engage a patient's bone to secure thebaseplate 110 to the patient's bone, such as, the glenoid. - With continued reference to
FIGS. 7-15 , the at least oneperipheral screw 150 is shown. The at least oneperipheral screw 150 may include ahead portion 152 with adrive opening 154 recessed into thehead portion 152 from a first end of theperipheral screw 150. The at least oneperipheral screw 150 may also include a threadedportion 156 extending away from a bottom surface of thehead portion 152 to a second end of theperipheral screw 150. The at least oneperipheral screw 150 may be, for example, threeperipheral screws 150 as shown in the depicted embodiment. Although alternative numbers ofperipheral screws 150 are also contemplated to correspond to the number ofperipheral bores 122 in thebaseplate 110. Theperipheral screws 150 may be inserted through theperipheral bores 122 in thebaseplate 110 to engage a patient's bone, such as, the glenoid, to assist with securing thebaseplate 110 to the patient's bone. - The coupling member or
modular taper 160 is shown inFIGS. 7-15 . Thecoupling member 160 may include an exterior threadedportion 162 on the distal or second end of thecoupling member 160. Thecoupling member 160 may also include aproximal recess 164 extending into thecoupling member 160 from the first end. Thecoupling member 160 may also include acentral bore 166 extending through thecoupling member 160 from the first end to the second end. Theproximal recess 164 may, for example, overlap with thecentral bore 166 at the first end of thecoupling member 160. - With continued reference to
FIGS. 7-15 , theglenosphere 180 may include acentral bore 182 extending through the glenosphere 180 from a first end to a second end. Thecentral bore 182 may include a distal taperedportion 184, a central threadedportion 186, and a proximalcylindrical portion 188. The distal taperedportion 184 may extend from the second end of theglenosphere 180 toward the first end. The central threadedportion 186 may be positioned between the distal taperedportion 184 and the proximalcylindrical portion 188. The proximalcylindrical portion 188 may extend from the central threadedportion 186 two the first end of theglenosphere 180. As shown inFIGS. 7, 8 and 15 , the diameter of the distal taperedportion 184 may be, for example, larger than the diameter of the proximalcylindrical portion 188. In addition, the diameter of the central threadedportion 186 may be smaller than the diameter of both the proximalcylindrical portion 188 and the distal taperedportion 184. The distal taperedportion 184 may include sidewalls that taper as they extend from the second end of theglenosphere 180 to the central threadedportion 186. The second end of theglenosphere 180 may include a recessedregion 190 positioned between a first lip orexterior lip 192 and aprotrusion 194. Thefirst lip 192 may surround the circumference of the second end of theglenosphere 180. Thefirst lip 192 may be, for example, a constant or continuous ring surrounding the recessedregion 190. Theprotrusion 194 may surround thecentral bore 182 on the second end of theglenosphere 180. - The
post 200 is shown inFIGS. 7-15 . Thepost 200 may include a cylindricalproximal head 202 positioned at a first end of thepost 200. The cylindricalproximal head 202 may include, for example, aproximal recess 204 extending into theproximal head 202 from the first and of thepost 200. Thepost 200 may also include acentral portion 206 extending away from a second end of theproximal head 202. Further, thepost 200 may include adistal portion 208 positioned at a second end of thepost 200. Thepost 200 may also include an exterior threadedportion 210 positioned between thecentral portion 206 and adistal portion 208. The threadedportion 210 may be, for example, configured or sized and shaped to engage the second threadedsection 140 of thecentral screw 130. - As shown in
FIGS. 1-6 , theimplant 100 may be assembled by, for example, inserting thecentral screw 130 through thecentral bore 116 of thebaseplate 110. The threadedportion 162 of thecoupling member 160 may then be threaded into the proximal interior threadedsection 118 of thebaseplate 110 to secure thecentral screw 130 to thebaseplate 110. After thebaseplate 110,central screw 130, and thecoupling member 160 are secured together they may be, for example, inserted into a patient coupled together. The at least oneperipheral screw 150 may then be inserted through the plurality ofperipheral bores 122 of thebaseplate 110. Next, the distal taperedportion 184 of theglenosphere 180 may be coupled to the proximal end of thecoupling member 160. Thecoupling member 160 may, for example, allow for angulation of theperipheral screws 150 before thecoupling member 160 is attached to assist in preventing thecentral screw 130 from coming out when theglenosphere 180 is attached. Apost 200 may then be inserted through thecentral bore 182 of theglenosphere 180, thecentral bore 166 of thecoupling member 160 and into therecess 136 of thecentral screw 130 such that the threadedportion 210 of thepost 200 engages the threadedportion 140 of thecentral screw 130. - A surgical method for implanting the
glenoid implants glenoid implant glenoid implant - Referring now to
FIGS. 16-45 , another embodiment of a glenoid implant or reverseglenoid implant 300. As shown inFIGS. 21-22 , theglenoid implant 300 includes abaseplate 310, acentral screw 330, aperipheral compression screw 350, amodular taper 360, aglenosphere 380, and apost 390. - Referring now to
FIGS. 23-28 , thebaseplate 310 includes a cylindrical shape, anupper surface 312 and a lower orbottom surface 314. Thebaseplate 310 also includes acentral bore 316 extending between theupper surface 312 and thelower surface 314. Thebaseplate 310 also includes a plurality ofperipheral bores 322 disposed around thecentral bore 316. In addition, the baseplate includes a plurality of discretearcuated keels 324 extending away from thebottom surface 314 of thebaseplate 310. As illustrated inFIG. 28 , thecentral bore 316 of thebaseplate 310 includes a proximal interior threadedsection 318 and a distalnon-threaded section 320. - Referring now to
FIGS. 29-31 , thecentral screw 330. Thecentral screw 330 includes a central axis, a proximalnon-threaded section 332 having a cylindrical shape, and a distal threadedsection 344. Thecentral screw 330 may include any desired length or width as can the proximalnon-threaded section 332 and/or the distal threadedsection 344. Advantageously, a reverse glenoid system may include a plurality ofcentral screws 330 having varying overall lengths and varying section lengths. Thenon-threaded section 342 of thecentral screw 330 may further include a bone ingrowth surface including texturing, pores, holes, and/or a sprayed on mechanical or biological bone ingrowth promoting material. Thecentral screw 330 also includes aproximal head portion 334. Thehead portion 334 has a surface area that increases in a direction opposite threadedportion 342. Thehead portion 334 of thecentral screw 330 includes arecess 336 that includes a proximalfemale section 338 for engaging a torque device (such as a screw driver). Therecess 336 includes a central threadedportion 340, and a distalnon-threaded portion 342. Therecess 336 is disposed throughproximal head 334. As illustrated inFIGS. 21 and 22 , thecentral screw 330 is slidingly disposed through thecentral bore 316 of thebaseplate 310. The diameter of thehead 334 is greater than a diameter ofnon-threaded section 332 of thecentral bore 316 of thebaseplate 310 such that thecentral screw 330 is captured by the baseplatecentral bore 316. Thecentral screw 330 is, for example, suitable for threading into a bone. - Referring now to
FIGS. 32-34 , aperipheral screw 350 is shown. Thescrew 350 may be, for example, a standard compression screw of the type known in the orthopedic implant arts. Theperipheral screw 350 may include ahead portion 352, adrive opening 354 inset into thehead portion 352 at a first end of thescrew 350, and a threadedportion 356 extending away from thehead portion 352. Eachscrew 350 is insertable through at least one of theperipheral bores 322 of thebaseplate 310 and into a desired bone to compress theimplant 300 onto the bone. - Referring now to
FIGS. 35-37 , a coupling member ormodular taper 360. Themodular taper 360 includes an exterior tapered cylindrical shape. Themodular taper 360 further includes a distal exterior threadedportion 362 and aproximal recess 364 for engaging a torque device, such as, a screwdriver. Themodular taper 360 also includes acentral bore 366 disposed through themodular taper 360. As shown inFIGS. 21 and 22 , themodular taper 360 threadedly connects within thecentral bore 316 of thebaseplate 310. - Referring now to
FIGS. 38-42 , of theglenosphere 380 is shown. Theglenosphere 380 includes a hemispherical shape and acentral bore 382 having a distal taperedportion 384, a central threadedportion 386, and a proximalcylindrical portion 388. As illustrated inFIGS. 21 and 22 , theglenosphere 380 is disposed atop themodular taper 360 such that the exterior of themodular taper 360 and the distal taperedportion 384 of the glenosphere bore 382 form a mechanical taper connection. - Referring now collectively to
FIGS. 28-30 , apost 390 is shown. Thepost 390 includes a cylindricalproximal head 392 having a diameter and aproximal recess 394 for engaging a torque device. Thepost 390 further includes acentral portion 396 having a diameter smaller than the diameter of the postproximal head 392 and adistal portion 398 having a diameter smaller than the diameter of the postproximal head 392. Thepost 390 also includes anexterior thread portion 400 disposed along a portion of thepost 390 between thecentral post portion 396 and thedistal post portion 398. When assembled, as illustrated inFIGS. 21 and 22 , thepost 390 is disposed through thecentral bore 382 of theglenosphere 380, through thecentral bore 366 of themodular taper 360, and threadedly connected to therecess 336 of thecentral screw 330. - An
implant 300 in accordance with the present disclosure offers several advantages over other known reverse glenoid devices. Thebaseplate 310 can accept acentral locking screw 330 to provide compression, then is locked in place to rigidify the construct via ataper cap 360 that will accept theglenosphere 380. This construct can be pre-assembled to allow the surgeon to insert the entire lockedconstruct 300 as one piece to streamline the process or simplify revision surgeries. The taper that can be added later and/or have built-in offset to allow eccentricity or have a longer taper option to build in lateralization. - The
screw 330 has a post portion that essentially replaces the distal post of the baseplate, and transfers that geometry to the screw, allowing the post to be much smaller in diameter since a screw does not need to pass through it and ultimately conserves bone. Additionally, thescrew 330 passes through the baseplate and provides compression via the screw portion as well as long term fixation via the proximal portion. - An exemplary method of using an
orthopedic implant assembly 300 includes placing abaseplate 310 into the bone, inserting acentral screw 330 through thebaseplate 310 into the bone, inserting aperipheral compression screw 350 through aperipheral bore 322 of thebaseplate 310 into the bone, and screwing amodular taper 360 into thecentral bore 316 of thebaseplate 310. These steps may be performed during an open surgical procedure or pre-assembled prior to surgery. - Next, an exemplary method of using the
implant 300 of the present disclosure includes placing aglenosphere 380 onto themodular taper 360 and inserting thepost 390 through theglenosphere 380 and thetaper 360 then threading the same into thecentral screw 330. - As may be recognized by those of ordinary skill in the art based on the teachings herein, numerous changes and modifications may be made to the above-described and other embodiments of the present disclosure without departing from the scope of the disclosure. The components of the implants, devices, and/or systems as disclosed in the specification, including the accompanying abstract and drawings, may be replaced by alternative component(s) or feature(s), such as those disclosed in another embodiment, which serve the same, equivalent or similar purpose as known by those skilled in the art to achieve the same, equivalent or similar results by such alternative component(s) or feature(s) to provide a similar function for the intended purpose. In addition, the implants, devices, and/or systems may include more or fewer components or features than the embodiments as described and illustrated herein. For example, the components and features of
implants implants - The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprise” (and any form of comprise, such as “comprises” and “comprising”), “have” (and any form of have, such as “has”, and “having”), “include” (and any form of include, such as “includes” and “including”), and “contain” (and any form of contain, such as “contains” and “containing”) are open-ended linking verbs. As a result, a method or device that “comprises,” “has,” “includes,” or “contains” one or more steps or elements possesses those one or more steps or elements, but is not limited to possessing only those one or more steps or elements. Likewise, a step of a method or an element of a device that “comprises,” “has,” “includes,” or “contains” one or more features possesses those one or more features, but is not limited to possessing only those one or more features. Furthermore, a device or structure that is configured in a certain way is configured in at least that way, but may also be configured in ways that are not listed.
- The invention has been described with reference to the preferred embodiments. It will be understood that the operational embodiments described herein are exemplary of a plurality of possible arrangements to provide the same general features, characteristics, and general system operation. Modifications and alterations will occur to others upon a reading and understanding of the preceding detailed description. It is intended that the invention be construed as including all such modifications and alterations.
Claims (18)
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