CN111904570A - Fixing structure for tibial tubercle fracture - Google Patents
Fixing structure for tibial tubercle fracture Download PDFInfo
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- CN111904570A CN111904570A CN202010995129.6A CN202010995129A CN111904570A CN 111904570 A CN111904570 A CN 111904570A CN 202010995129 A CN202010995129 A CN 202010995129A CN 111904570 A CN111904570 A CN 111904570A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone
Abstract
The present invention provides a fixing structure for tibial tubercle fracture, comprising: the wrapping structure is suitable for wrapping the tibial tuberosity fracture block and the bone tissues around the tibial tuberosity fracture block and fixing the tibial tuberosity fracture block and the bone tissues through screws; the hook structure is fixedly arranged on the wrapping structure and is suitable for being hooked at the joint of the patellar ligament and the fracture block. The fixing structure adopts a wrapping method to tightly wrap the fracture block and bone tissues around the fracture block after the fracture block and the bone tissues are reset and squeezed, and is fixed by adopting a plurality of screws; after the hook structure is arranged, the hook structure is hooked at the joint of the patellar ligament and the fracture block, so that the fracture block is prevented from being pulled out by the patellar ligament, and the force resisting the fracture block pulled out by the patellar ligament is from the whole wrapping structure instead of a single screw; through the arrangement, the phenomenon that too large force is applied to a single position of a skeleton is avoided, and the problem of comminuted fracture caused by fixing a fracture block can be avoided as much as possible; for patients with osteoporosis, it can be used as the case may be.
Description
Technical Field
The invention relates to the technical field of medical instruments for fracture auxiliary fixation, in particular to a fixing structure for tibial tubercle fracture.
Background
The total knee replacement is an effective method for treating middle and late-stage arthritis, but the injury of the knee stretching device is contraindication of the total knee replacement, and the premise of the total knee replacement is that the knee stretching device of a patient is complete, otherwise, the treatment effect is greatly influenced. As shown in fig. 1, the knee extension device mainly includes a quadriceps femoris tendon 01, a patella 02, and a patellar ligament 03. In reality, some patients have intact knee extension devices before the total knee replacement, but have trauma after the total knee replacement, which results in damage to the knee extension devices. One such type of injury is a fracture at the tibial tubercle 04 position, which can pull the fracture away from its original position after fracture because patellar ligament 03 is still attached to the fracture.
For such patients, if there is no history of total knee replacement surgery, the injured part is fixed by using a long screw and a toothed washer in a matching way (as shown in fig. 2), specifically, the fracture block is reset firstly, then a hole is formed in the fracture block, then the toothed washer is placed on the fracture block, and after the long screw is used to penetrate through the toothed washer and the hole in the fracture block, the long screw is screwed into the bone to realize the fixation. However, after the knee joint replacement, the knee joint prosthesis can not be fixed by long screws due to the blocking of the knee joint prosthesis below the tibial tubercle 04; and the patients with the disease are often old, have osteoporosis, and have frequent comminuted fracture at the position of a tibial tubercle, and the toothed washer is easy to fix and not firm, so that the traditional method for matching and fixing the long screw and the toothed washer is difficult to use.
Disclosure of Invention
Therefore, the present invention is directed to overcome the technical defect that the long screw and toothed washer in the prior art cannot be used for the tibial tubercle fracture after total knee replacement, and to provide a fixation structure for the tibial tubercle fracture.
To this end, the present invention provides a fixing structure for tibial tubercle fracture, comprising:
the wrapping structure is suitable for wrapping a tibial nodular fracture block and bone tissues around the fracture block and fixedly connecting the tibial nodular fracture block and the bone tissues around the fracture block through a plurality of screws;
the hook structure is fixedly arranged on the wrapping structure and is suitable for being hooked at the joint of the patellar ligament and the fracture block.
As a preferred aspect, the wrapping structure includes:
the arc-shaped wrapping sheet is suitable for wrapping the outer side of the tibial tuberosity fracture block in an arc shape and is provided with at least one first through hole;
the first side fixing piece is fixedly connected with one side of the arc-shaped wrapping piece, extends downwards along the tibia direction for a set length and is provided with at least one second through hole;
the second side fixing piece is fixedly connected with the other side of the arc-shaped wrapping piece, extends downwards along the tibia direction for a set length, and is provided with at least one third through hole.
Preferably, the first side fixing piece and the second side fixing piece are symmetrically arranged.
As a preferred scheme, the arc wrapping sheet is of a flexible steel plate structure.
As a preferable scheme, the thickness of the arc wrapping sheet is 3-5mm, the width is 1-3cm, the radian is 38-42 degrees, and the arc length is 1.5-3 cm.
Preferably, the thickness of the first side fixing sheet and/or the second side fixing sheet is 3 to 5mm, the width is 2 to 4cm, and the length is 8 to 15 cm.
Preferably, one end of the first side fixing sheet and/or the second side fixing sheet far away from the arc-shaped wrapping sheet is of a pointed tooth structure.
Preferably, the angle of the sharp corner of the tine structure is 30-60 degrees, and the topmost end of the sharp corner is in the shape of a circular arc.
As a preferred scheme, the hooking structure is at least one hook; the hook is fixedly arranged on the arc wrapping sheet.
Preferably, the screw comprises a compression screw and a locking screw;
the extrusion screw comprises an extrusion nut and an extrusion bolt shaft, the diameter of the extrusion bolt shaft is smaller than the inner diameters of the first through hole, the second through hole and the third through hole, and the diameter of the extrusion nut is larger than the inner diameters of the first through hole, the second through hole and the third through hole;
the lock screw comprises a lock nut and a lock bolt shaft, the diameter of the lock bolt shaft is larger than that of the extrusion bolt shaft and smaller than that of the first through hole, the second through hole and the inner diameter of the third through hole, threads are arranged on the outer diameter of the lock nut and can be matched with and screwed with the threads on the inner wall of the first through hole, the second through hole and the third through hole in a matched mode.
The technical scheme provided by the invention has the following advantages:
1. the fixing structure for the tibial tubercle fracture comprises a wrapping structure and a hooking structure, wherein the wrapping structure is suitable for wrapping a fracture block at the position of a tibial tubercle and bone tissues around the fracture block and can be fixedly connected with the fracture block and the bone tissues through a plurality of screws, and the hooking structure is fixedly arranged on the wrapping structure and is suitable for being hooked at the joint of a patellar ligament and the fracture block to prevent the patellar ligament from deviating the fracture block. The fixing structure adopts a wrapping method to tightly wrap the fracture block and bone tissues around the fracture block after the fracture block and the bone tissues are reset and squeezed, and is fixed by adopting a plurality of screws; after the hook structure is arranged, the hook structure is hooked at the joint of the patellar ligament and the fracture block, so that the fracture block is prevented from being pulled out by the patellar ligament, and the force resisting the fracture block pulled out by the patellar ligament is from the whole wrapping structure instead of a single screw; through the arrangement of the wrapping structure and the hooking structure and the adoption of a plurality of screws for dispersed fixation, the phenomenon that too large force is applied to a single position of a skeleton is avoided, so that the problem of comminuted fracture caused by fixing a fracture block can be avoided as much as possible; for patients with osteoporosis, it can be used as the case may be. The fixing structure of the invention reduces the requirement on the bone hardness of a patient and has higher safety.
2. The invention relates to a fixing structure for tibial tubercle fracture, which comprises an arc-shaped wrapping sheet, a first side fixing sheet and a second side fixing sheet, wherein the first side fixing sheet and the second side fixing sheet are respectively arranged at two sides of the arc-shaped wrapping sheet, extend downwards along the tibial direction for a set length and are generally longer than a knee joint prosthesis, a screw passes through a first through hole in the arc-shaped wrapping sheet and then is connected with a tibial tubercle fixing block, and passes through a second through hole in the first side fixing sheet or a third through hole in the second side fixing sheet and then is connected with the tibial.
3. According to the fixing structure for the tibial tubercle fracture, the arc-shaped wrapping sheet is of the flexible steel plate structure, when the arc-shaped wrapping sheet is not very attached to the bone tissue of a patient, the flexible steel plate can be driven to deform slightly through the screwing-in operation of the screw, so that the arc-shaped wrapping sheet is tightly wrapped on the tibia of the patient.
4. According to the fixing structure for the tibial tubercle fracture, the arc wrapping sheet is 3-5mm thick, 1-3cm wide, 38-42 degrees in radian and 1.5-3cm long, can be well adapted to the size of the tibia of most patients, and is good in wrapping property and stability.
5. According to the fixing structure for the tibial tubercle fracture, one end of the first side fixing piece and/or the second side fixing piece, which is far away from the arc-shaped wrapping piece, is of a sharp tooth structure, and the sharp tooth structure is convenient for downward insertion operation in an operation. The top end of the sharp corner is arc-shaped, so that human tissues can be prevented from being scratched.
6. The invention relates to a fixing structure for tibial fracture, which is characterized in that the hook structure is at least one hook, and the hook is fixedly arranged on an arc wrapping sheet. The arc wrapping sheet integrally provides a force source for the hook, and avoids concentrated pulling on a certain point of the skeleton.
Drawings
To more clearly illustrate the technical solutions in the prior art or the embodiments of the present invention, the drawings used in the description of the prior art or the embodiments are briefly introduced below.
FIG. 1 is a schematic view of a knee extension device.
Fig. 2 is a schematic view of a long screw and a toothed washer.
Fig. 3 is a perspective view of a fixation structure for tibial tubercular fractures in accordance with the present invention.
Reference numerals: 1. a first side fixing sheet; 11. a second through hole; 2. a second side fixing sheet; 21. a third through hole; 3. an arc wrapping sheet; 31. a first through hole; 4. a tine configuration; 5. and (4) hanging hooks.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings.
Examples
The present embodiment provides a fixing structure for a tibial tubercle fracture, as shown in fig. 3, including: the wrapping structure is suitable for wrapping a tibial nodular fracture block and bone tissues around the fracture block and fixedly connecting the tibial nodular fracture block and the bone tissues around the fracture block through a plurality of screws; the hook structure is fixedly arranged on the wrapping structure and is suitable for being hooked at the joint of the patellar ligament and the fracture block.
The fixed knot constructs for shin bone tuberosity fracture of this embodiment, including parcel structure and hook structure, the parcel structure is suitable for the fracture piece of parcel shin bone tuberosity position and is located the osseous tissue around the fracture piece to can be through a plurality of screw and fracture piece and osseous tissue fixed connection, the hook structure is fixed to be set up on the parcel structure, is suitable for the hook in the junction of patellar ligament and fracture piece, prevents that the patellar ligament from pulling the fracture piece off normal. The fixing structure of the embodiment adopts a wrapping method to tightly wrap the fracture block and bone tissues around the fracture block after the fracture block and the bone tissues are reset and squeezed, and is fixed by adopting a plurality of screws; after the hook structure is arranged, the hook structure is hooked at the joint of the patellar ligament and the fracture block, so that the fracture block is prevented from being pulled out by the patellar ligament, and the force resisting the fracture block pulled out by the patellar ligament is from the whole wrapping structure instead of a single screw; through the arrangement of the wrapping structure and the hooking structure and the adoption of a plurality of screws for dispersed fixation, the phenomenon that too large force is applied to a single position of a skeleton is avoided, so that the problem of comminuted fracture caused by fixing a fracture block can be avoided as much as possible; for patients with osteoporosis, it can be used as the case may be. The fixing structure of the embodiment reduces the requirement on the bone hardness of a patient, and is higher in safety.
As shown in fig. 3, the wrapping structure includes: the arc-shaped wrapping sheet 3 is suitable for wrapping the outer side of the tibial tuberosity fracture block in an arc shape and is provided with at least one first through hole 31; the first side fixing piece 1 is fixedly connected with one side of the arc-shaped wrapping piece 3, extends downwards along the tibia direction for a set length and is provided with at least one second through hole 11; and the second side fixing piece 2 is fixedly connected with the other side of the arc wrapping piece 3, extends downwards along the tibia direction for a set length and is provided with at least one third through hole 21. The first and second lateral anchoring pieces 1 and 2 are generally longer than the knee joint prosthesis.
In this embodiment, the first side fixing sheet 1 and the second side fixing sheet 2 are symmetrically disposed. In some special cases, asymmetry may also be provided.
The arc wrapping sheet 3 is of a flexible steel plate structure. When the arc wrapping sheet 3 is not very fit with the bone tissue of a patient, the flexible steel plate can be driven to deform slightly by screwing in the screw, so that the arc wrapping sheet 3 is tightly wrapped on the tibia of the patient.
In the embodiment, the arc wrapping sheet 3 has the thickness of 3-5mm, the width of 1-3cm, the radian of 38-42 degrees and the arc length of 1.5-3cm, can be well adapted to the size of the tibia of most patients, and has good wrapping property and good stability.
The thickness of the first side fixing sheet 1 and/or the second side fixing sheet 2 is 3-5mm, the width is 2-4cm, and the length is 8-15 cm.
One end of the first side fixing sheet 1 and/or the second side fixing sheet 2 far away from the arc-shaped wrapping sheet 3 is a pointed tooth structure 4. The angle of the sharp corner of the sharp tooth structure 4 is 30-60 degrees, and the topmost end of the sharp corner is arc-shaped. The tine formation 4 facilitates the intraoperative downward insertion procedure. The top end of the sharp corner is arc-shaped, so that human tissues can be prevented from being scratched.
The hook structure is at least one hook 5, the hook 5 is fixedly arranged on the arc wrapping sheet 3. The arc wrapping sheet 3 integrally provides a force source for the hook, and avoids centralized pulling on a certain point of the skeleton.
In this embodiment, the screws may be ordinary short screws, i.e. ordinary short screws are used to fix the wrapping structure on the fracture block and the bone tissue around the fracture block after passing through the first through hole, the second through hole and the third through hole.
As a refinement, the screw may also include a compression screw and a locking screw.
The extruding screw comprises an extruding nut and an extruding bolt shaft, the diameter of the extruding bolt shaft is smaller than the inner diameters of the first through hole 31, the second through hole 11 and the third through hole 21, and the diameter of the extruding nut is larger than the inner diameters of the first through hole 31, the second through hole 11 and the third through hole 21.
The lock screw includes lock nut and lock bolt axle, the diameter of lock bolt axle is greater than the diameter of extrusion bolt axle, and is less than first through-hole 31 the second through-hole 11 with the internal diameter of third through-hole 21, be equipped with the screw thread on lock nut's the external diameter, can with establish first through-hole 31 the second through-hole 11 with it is fixed that the screw thread matching spiro union on the third through-hole 21 inner wall is fixed.
In this embodiment, the inner diameters of the first through hole 31, the second through hole 11, and the third through hole 21 are the same, and the inner walls thereof are provided with internal threads.
The fixed knot constructs for shin bone tuberosity fracture in this embodiment, when specifically using, at first hang 5 couples in the junction of patellar ligament and fracture piece, then the application of force is drawn down, make the fracture piece reset, then wrap up 3 parcel in the fracture piece outsides with arc parcel, use extrusion screw to pass first through-hole 31, second through-hole 11 and third through-hole 21, extrusion parcel structure is to laminating with the osseous tissue, then take out extrusion screw, use locking screw to bore first through-hole 31, second through-hole 11 and third through-hole 21, locking screw and first through-hole 31, the interior screw-thread fit locking of second through-hole 11 and third through-hole 21, realize fixing.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A fixation structure for a tibial tubercle fracture, comprising:
the wrapping structure is suitable for wrapping a tibial nodular fracture block and bone tissues around the fracture block and fixedly connecting the tibial nodular fracture block and the bone tissues around the fracture block through a plurality of screws;
the hook structure is fixedly arranged on the wrapping structure and is suitable for being hooked at the joint of the patellar ligament and the fracture block.
2. The fixation structure for tibial tubercle fracture according to claim 1, wherein: the wrapping structure includes:
the arc-shaped wrapping sheet (3) is suitable for wrapping the outer side of the tibial tuberosity fracture in an arc shape and is provided with at least one first through hole (31);
the first side fixing piece (1) is fixedly connected with one side of the arc-shaped wrapping piece (3), extends downwards along the tibia direction for a set length and is provided with at least one second through hole (11);
and the second side fixing piece (2) is fixedly connected with the other side of the arc wrapping piece (3), extends downwards along the tibia direction for a set length, and is provided with at least one third through hole (21).
3. The fixation structure for tibial tubercle fracture according to claim 2, wherein: the first side fixing piece (1) and the second side fixing piece (2) are symmetrically arranged.
4. The fixation structure for tibial tubercle fracture according to claim 2, wherein: the arc wrapping sheet (3) is of a flexible steel plate structure.
5. The fixation structure for tibial tubercle fracture according to claim 2, wherein: the thickness of the arc wrapping sheet (3) is 3-5mm, the width is 1-3cm, the radian is 38-42 degrees, and the arc length is 1.5-3 cm.
6. The fixation structure for tibial tubercle fracture according to claim 2, wherein: the thickness of the first side fixing piece (1) and/or the second side fixing piece (2) is 3-5mm, the width is 2-4cm, and the length is 8-15 cm.
7. The fixation structure for tibial tubercle fracture according to claim 2, wherein: one end of the first side fixing piece (1) and/or one end of the second side fixing piece (2) far away from the arc wrapping piece (3) are in a pointed tooth structure (4).
8. The fixation structure for tibial tubercle fracture according to claim 7, wherein: the angle of the sharp corner of the sharp tooth structure (4) is 30-60 degrees, and the topmost end of the sharp corner is arc-shaped.
9. The fixation structure for tibial tubercle fracture according to claim 2, wherein: the hooking structure is at least one hook (5); the hook (5) is fixedly arranged on the arc wrapping sheet (3).
10. The fixation structure for tibial tubercle fracture according to claim 4, wherein: the screw comprises a compression screw and a locking screw;
the extrusion screw comprises an extrusion nut and an extrusion bolt shaft, the diameter of the extrusion bolt shaft is smaller than the inner diameters of the first through hole (31), the second through hole (11) and the third through hole (21), and the diameter of the extrusion nut is larger than the inner diameters of the first through hole (31), the second through hole (11) and the third through hole (21);
the lock screw comprises a lock nut and a lock bolt shaft, the diameter of the lock bolt shaft is larger than that of the extrusion bolt shaft and smaller than that of the first through hole (31), the second through hole (11) and the inner diameter of the third through hole (21), threads are arranged on the outer diameter of the lock nut and can be matched with and screwed with the threads on the inner wall of the first through hole (31), the second through hole (11) and the third through hole (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010995129.6A CN111904570B (en) | 2020-09-21 | 2020-09-21 | Fixing structure for tibial tubercle fracture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010995129.6A CN111904570B (en) | 2020-09-21 | 2020-09-21 | Fixing structure for tibial tubercle fracture |
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| CN111904570A true CN111904570A (en) | 2020-11-10 |
| CN111904570B CN111904570B (en) | 2022-03-01 |
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| CN202010995129.6A Active CN111904570B (en) | 2020-09-21 | 2020-09-21 | Fixing structure for tibial tubercle fracture |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113842197A (en) * | 2021-09-28 | 2021-12-28 | 中国人民解放军空军军医大学 | Internal fixation device for posterolateral fracture of tibial plateau |
| CN114652372A (en) * | 2022-03-18 | 2022-06-24 | 唐河县人民医院 | Instrument for tibia intercondylar eminence avulsion fracture repair |
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| WO2019079856A1 (en) * | 2017-10-25 | 2019-05-02 | Monash University | Implant for tibial fractures |
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| CN209751199U (en) * | 2018-11-30 | 2019-12-10 | 王伟 | Fixing steel plate for fixing posterior cruciate ligament avulsion fracture of knee joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113842197A (en) * | 2021-09-28 | 2021-12-28 | 中国人民解放军空军军医大学 | Internal fixation device for posterolateral fracture of tibial plateau |
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| CN114652372A (en) * | 2022-03-18 | 2022-06-24 | 唐河县人民医院 | Instrument for tibia intercondylar eminence avulsion fracture repair |
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| Publication number | Publication date |
|---|---|
| CN111904570B (en) | 2022-03-01 |
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