Anatomical steel plate for fixing distal femoral coronal plane fracture

Abstract

The utility model discloses an anatomical steel plate for fixing the distal coronal plane fracture of femur, which comprises an annular steel plate, a connecting steel bar, screw holes and side hooks, the annular steel plate is provided with a plurality of screw holes, screws are arranged in the screw holes, and the screws are fixed on the femur. Two connecting steel bars are arranged on the inner side of the annular steel plate, the two ends of each connecting steel bar are fixed to the annular steel plate, three-medium side hooks are arranged on the edge of the side face of the annular steel plate, and the side hooks are hooked at the junctions of tendon bones and thighbones. The side hooks, the annular steel plate and the connecting steel bars are of an integrated structure. The thickness of the steel plate is small, the steel plate can be automatically shaped according to the shape of a bone after screws are screwed in, a plurality of screws can be placed at the far end of a fracture line, the steel plate serves as a supporting steel plate in the lateral front of a fracture position, the screws can be arranged from front to back and from outside to inside to fix a fracture block, and therefore multi-point fixing is achieved. And the three side hooks are fixed at the tendon-bone junction of the fracture end, so that the fixing effect of the fracture block can be enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical fixation steel plates, in particular to an anatomical steel plate used for fixing distal femoral coronal fractures. Background Art

[0002] Distal femoral coronal plane fractures are relatively rare injuries, typically occurring at the lateral femoral condyle. They often lead to knee instability, avascular necrosis of the fracture fragment, and nonunion. Currently, there is considerable controversy regarding the internal fixation method for distal femoral coronal plane fractures, with lag screw fixation being the most commonly used. A support plate or locking plate can be added if necessary, but the choice of screw diameter and number remains controversial. Screw fixation alone is insufficient to resist sagittal shear stress and varus-valgus stress during knee flexion, making loosening, displacement, and even fracture of the internal fixation possible.

[0003] Despite the biomechanical reliability of these plates, there are currently no anatomical or lateral support plates specifically designed for distal femoral coronal plane fractures. Ideally, an anti-gliding plate should be placed just posterior to the lateral condyle, based on mechanical requirements. However, the posterior condyle is enlarged and convex, largely covered by cartilage, and the lateral head of the gastrocnemius muscle attaches directly posterior to the posterior condyle. Therefore, the plate can only be placed posterolaterally to the lateral femoral condyle. Commonly used reconstruction plates often require extensive shaping, and typically only a single screw can be implanted distal to the fracture line. Utility Model Content

[0004] In view of the above problems, the present invention aims to provide an anatomical steel plate for fixation of distal femoral coronal fractures, wherein multiple screws can be placed at the distal end of the fracture line to enhance the fixation effect of the fracture fragments.

[0005] The technical problem solved by the present invention can be achieved by adopting the following technical solution: an anatomical steel plate for fixing distal femoral coronal fractures, comprising an annular steel plate, a connecting steel bar, screw holes, and side hooks, wherein the annular steel plate is provided with a plurality of screw holes, a connecting steel bar is provided on the inner side of the annular steel plate, the two ends of the connecting steel bar are fixed on the annular steel plate, and the side edges of the annular steel plate are provided with side hooks.

[0006] There are three side hooks, which are hooked at the junction of the tendon bone and the femur.

[0007] The side hooks are located on the edges of the screw holes.

[0008] The side hooks, the annular steel plate and the connecting steel bar are an integrated structure.

[0009] A screw is arranged in the screw hole and is fixed on the femur.

[0010] There are 13 screw holes on the annular steel plate.

[0011] The width of the upper end of the annular steel plate is narrower than that of the lower end.

[0012] There are two connecting steel bars, and the ends of the connecting steel bars are connected to the screw holes.

[0013] Compared with existing technologies, this new invention offers the following advantages: The plate is thinner and automatically conforms to the bone shape after screws are inserted. Multiple screws can be placed distal to the fracture line, serving as support plates for the lateral and anterior sides of the fracture. Screws can be inserted from the front to the back and from the outside inward to secure the fracture fragments, achieving multi-point fixation. The new invention features three hooks that are fixed at the tendon-bone junction of the fracture end, enhancing the fixation of the fracture fragments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a structural diagram of the utility model;

[0016] Figure 3 This is a schematic diagram of the use state of the utility model;

[0017] Figure 4 This is a schematic diagram of the use state of the utility model;

[0018] In the figure: 1-annular steel plate, 2-connecting steel bar, 3-screw hole, 4-side hook, 5-screw, 6-femur, 7-tibia, 8-tendon. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0020] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0021] Combined with attachment Figures 1 to 4As shown, this embodiment discloses an anatomical steel plate for fixation of distal femoral coronal plane fractures, comprising an annular steel plate 1, connecting steel bars 2, screw holes 3, and side hooks 4. The side hooks 4, annular steel plate 1, and connecting steel bars 2 form an integrated structure. The annular steel plate 1 is provided with a plurality of screw holes 3. Two connecting steel bars 2 are provided inside the annular steel plate 1. The ends of the connecting steel bars 2 are fixed to the annular steel plate 1, and the ends of the connecting steel bars 2 are connected to the screw holes 3.

[0022] The side edge of the annular steel plate 1 is provided with three side hooks 4, and the side hooks 4 are located on the edge of the screw hole 3. The three side hooks 4 are respectively hooked at the junction of the tendon 8 and the femur 6, which can increase the fixation effect on the fracture fragment.

[0023] The annular steel plate 1 has 13 screw holes 3, each of which is provided with a screw. The screw is fixed to the femur 6, thereby fixing the steel plate to the coronal surface of the lower end of the femur 6, and the steel plate fixes the fracture fragment. When in use, screws can be optionally inserted into the screw holes 3 as needed to achieve multi-point fixation.

[0024] The width of the upper end of the annular steel plate 1 is narrower than that of the lower end, and the lower end of the annular steel plate 1 is fixed on the coronal plane of the lower end of the femur 6.

[0025] The annular plate 1 and connecting plate 2 are constructed with a relatively low thickness while ensuring strength. Once screws are inserted, the plates automatically conform to the shape of the bone. Multiple screws can be placed distal to the fracture line, serving as support plates for the lateral and anterior aspect of the fracture. Screws can be inserted from front to back and from the outside inward to secure the fracture fragments, achieving multi-point fixation. Three lateral hooks 4 are fixed at the tendon-bone junction at the fracture end to enhance fixation of the fragments.

[0026] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent change or modification made to the above embodiment based on the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. An anatomical steel plate for fixation of distal femoral coronal fractures, comprising an annular steel plate (1), a connecting steel bar (2), screw holes (3), and side hooks (4), characterized in that: The annular steel plate (1) is provided with a plurality of screw holes (3), a connecting steel bar (2) is provided on the inner side of the annular steel plate (1), both ends of the connecting steel bar (2) are fixed on the annular steel plate (1), and a side hook (4) is provided on the side edge of the annular steel plate (1).

2. The anatomical plate for fixation of distal femoral coronal fracture according to claim 1, characterized in that: The side hook (4) is located on the edge of the screw hole (3).

3. The anatomical plate for fixation of distal femoral coronal fracture according to claim 1, characterized in that: There are three side hooks (4), and the side hooks (4) are hooked at the junction of the tendon bone (8) and the femur (6).

4. The anatomical plate for fixation of distal femoral coronal fracture according to claim 1, characterized in that: The side hook (4), the annular steel plate (1) and the connecting steel bar (2) are an integrated structure.

5. The anatomical plate for fixation of distal femoral coronal fracture according to claim 1, characterized in that: A screw is provided in the screw hole (3), and the screw is fixed on the femur (6).

6. The anatomical plate for fixation of distal femoral coronal fracture according to claim 1, characterized in that: There are 13 screw holes (3) on the annular steel plate (1).

7. The anatomical plate for fixation of distal femoral coronal fracture according to claim 1, characterized in that: The width of the upper end of the annular steel plate (1) is narrower than that of the lower end.

8. The anatomical plate for fixation of distal femoral coronal fracture according to claim 1, characterized in that: There are two connecting steel bars (2), and the ends of the connecting steel bars (2) are connected to the screw holes (3).

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