Osteotomy wedge-shaped gasket around knee joint

Abstract

The invention relates to the medical treatment field, in particular to an osteotomy wedge-shaped gasket around a knee joint. The gasket includes a wedge-shaped gasket body, the thickness of the wedge-shaped gasket body gradually decreases towards one direction, and an osteotomy fixation area is arranged in the middle of the wedge-shaped gasket body. By adopting a titanium alloy, a pure titanium material or a cobalt-chromium-molybdenum alloy material, a long-term effective support can be provided for bones in the wedge-shaped osteotomy area, the bone adsorption risk is reduced, and osseointegration of the wedge-shaped osteotomy area can be facilitated. Meanwhile, the osteotomy fixation area can also be supplied to replacement of the whole knee joint.

Description

technical field [0001] The invention relates to the medical field, in particular to a wedge-shaped spacer for osteotomy around a knee joint. Background technique [0002] With the popularity of knee replacement in China and the improvement of patients' sensitivity to pain, the number of knee replacements has increased year by year, and the age distribution of knee replacement revisions has become younger and younger. In order to delay the rejuvenation of knee joint revision, in recent years, domestic famous osteopathic doctors have proposed step-by-step treatments including different techniques for knee joint degenerative diseases, including "knee preservation" and "knee replacement". [0003] The varus and valgus deformities caused by unicondylar knee osteoarthritis can cause abnormal distribution of joint weight-bearing stress, such as internal knee deformity, which causes stress concentration on the medial side of the knee joint and accelerates the degeneration of the med...

AI Technical Summary

Problems solved by technology

Among them, the allogeneic bone material implanted into the wedge-shaped osteotomy area has a low rate of bony fusion, easily leads to bone resorption, and cannot effectively promote osseointegration, and is likely to cause the spread of diseases; while autologous bone as a bone graft material may lead to the occurrence of related complications at the bone harvesting site; and if the wedge-shaped washer made of alloy material can effectively prevent bone resorption and provide long-term effective bone support, but for the possible total knee replacement in the later stage, it is necessary to use the wedge-shaped washer Holes are drilled in the middle, and the alloy material obviously cannot facilitate drilling, and cannot provide an osteotomy fixation area for later total knee replacement

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