Fracture setting device for patellar fracture

Abstract

The invention discloses a fracture setting device for patellar fracture. The fracture setting device for patellar fracture comprises an adapter ring and a plurality of fracture setting plates which are dismountably and fixedly mounted on the adapter ring, wherein a locking screw with adjustable screw inlet angle is arranged on each of the fracture setting plates. The fracture setting device for patellar fracture has the following beneficial effects that the fracture setting plates have plasticity are arranged, so that the fracture setting plates can change shape of bodies according to the surface shape of kneecaps, the fracture setting plates cooperate with the surfaces of the kneecaps, and wear to surrounding tissue when the fracture setting plates are fixed in bodies can be reduced; thelocking screws are arranged on the fracture setting plates, so that the screw inlet angle can be freely adjusted according to actual conditions, fracture lines can be kept off, pinpoint fixation for fractured bone blocks can be realized, the fracture setting device is particularly suitable for reset and fixation of complex comminuted patellar fractures, and the clinical difficult problem that thecomplex comminuted patellar fractures are difficult to reset and fix, can be effectively solved. A thread is formed in a screw tail of each of the locking screws, so that connecting firmness and intensity of the fracture setting plates and kneecaps can be effectively reinforced, and generation of screw loosening can be avoided.

Description

technical field [0001] The invention relates to the field of medical instruments for patella fractures, in particular to a bone-synthesizing device for patella fractures. Background technique [0002] The patella is the largest sesamoid bone in the human body and an important part of the knee joint. It can transmit and enhance the contraction force of the quadriceps femoris. It is one of the important knee extension devices and an important part of the knee joint. [0003] Patella fractures are intra-articular fractures. The current treatment methods for patellar fractures mainly include Kirschner wire tension band fixation, patellar grasp fixation, hollow nail tension band fixation, and Cable-pin internal fixation system. Some methods generally have problems such as small fixation coverage, deviation and inaccuracy in the reduction of bone fragments, and weak and unstable fixation, especially for complicated and comminuted patella fractures, which cannot be accurately and f...

AI Technical Summary

Problems solved by technology

[0003] Patella fractures are intra-articular fractures. The current treatment methods for patellar fractures mainly include Kirschner wire tension band fixation, patellar grasp fixation, hollow nail tension band fixation, and Cable-pin internal fixation system. Some methods generally have problems such as small fixation coverage, deviation and inaccuracy in the reduction of bone fragments, and weak and unstable fixation, especially for complicated and comminuted patella fractures, which cannot be accurately and firmly fixed

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