Progressive distracter after gonitis tibial osteotomy

Abstract

The invention relates to a progressive distracter after gonitis tibial osteotomy and belongs to the technical field of orthopedic medical devices. The progressive distracter is used for distracting agonitis tibial osteotomy part. The technical scheme is that an upper distracting plate and a lower distracting plate are rectangular flat plates respectively, the front ends of rectangles of the upperdistracting plate and the lower distracting plate in the length direction are connected through a rotating shaft, the rotating shaft is perpendicular to the length direction of each rectangle, the opposite plate surfaces of the upper distracting plate and the lower distracting plate are provided with threads, the threads are along the center lines of the upper distracting plate and the lower distracting plate in the length direction respectively, a distracting screw is conical, a conical rod body is circumferentially provided with a thread, and the thread of the distracting screw is matched with the threads on the plate surfaces of the upper distracting plate and the lower distracting plate. The progressive distracter is simple in structure, convenient to use and good in effect; an osteotomy gap can be progressively slowly distracted during an operation, the inner side cortex is kept intact and not broken during the operation, and the goal of placing a bone block or a polymer filler in the osteotomy gap purely to form an inner side support without needing an additional bone plate for fixation is achieved.

Description

technical field [0001] The invention relates to a device for stretching the tibial osteotomy part of knee arthritis, belonging to the technical field of orthopedic medical devices. Background technique [0002] Knee osteoarthritis is the most common joint disease in the elderly, and it is also the main cause of lower limb disability in the elderly, which seriously affects the daily activities and quality of life of the elderly. Knee osteoarthritis refers to a chronic bone and joint disease caused by cartilage degeneration and bone hyperplasia in the knee joint. Clinically, it is mainly manifested as knee joint pain and dysfunction of varying degrees, and some joint swelling and effusion , X-ray showed narrowing of the joint space, osteophyte formation at the joint margin, subchondral bone sclerosis and cystic degeneration. About 60% of people over the age of 55 have knee osteoarthritis on X-ray films, and 35%-50% of them have clinical manifestations. When the knee joint is...

AI Technical Summary

Problems solved by technology

But so far, the problem of how to protect the medial cortex from brittle fracture has not been solved, and it has become the key to breakthroughs that affect the use of bone plates, and it needs to be solved urgently

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