Rotary bone-cutting guide plate with precise measurement

Abstract

The invention provides a rotary bone-cutting guide plate with precise measurement. The rotary bone-cutting guide plate comprises a fixed end and a rotary end, the fixed end comprises a positioning portion, a first saw groove is formed in the fixed end, and a first installation portion is arranged at the bottom of the fixed end; a second installation portion is arranged at the upper end of the rotary end, the second installation portion is connected with the first installation portion in a matched mode so that the rotary end can rotate at the bottom of the fixed end, and a second saw groove is formed in the rotary end. With the rotary bone-cutting guide plate with precise measurement, the angle of bone cutting is convenient to adjust, and small gaps generated when end faces of cut bones are united are convenient to eliminate.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to an accurate measurement type rotating osteotomy guide plate. Background technique [0002] Congenital dysplasia of the hip is a clinically difficult type of case. Total hip replacement has been proven to be the only effective treatment for adult congenital dysplasia of the hip. Among them, Crowe type IV is the most complicated. Because most of these patients are accompanied by developmental elongation of the femur of the affected limb and an increase in the anteversion angle of the femoral neck, subtrochanteric osteotomy is required to place the joint in a normal position during total hip arthroplasty. Two problems need to be solved: 1. Shortening of the femur, 2. Adjustment of the anteversion angle of the prosthesis. [0003] In order to achieve these two goals, the current method is free-hand vertical bone osteotomy, and the posterior osteotomy end is refixed by modular pros...

AI Technical Summary

Problems solved by technology

[0004] 1. Freehand osteotomy, the osteotomy surface is difficult to accurately form a 90° angle, so when the osteotomy ends are aligned, the tiny gap cannot be eliminated, and poor alignment will adversely affect the healing of the osteotomy ends;

[0005] 2. Osteotomy has a smaller joint surface, and healing is relatively difficult;

[0006] 3. The anti-rotation ability of the vertical osteotomy surface is poor, and auxiliary fixation is required, such as single cortical plate, bone strip or modular prosthesis, which not only increases the cost, but also complicates the operation, and the effect is not good

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