A positioning tool for subtrochanteric osteotomy in children

Abstract

The invention relates to a locating tool for children femur osteotomy. The locating tool comprises a main body template, wherein the main body template comprises an osteotomy angle determining die and an osteotomy length determining die, and a locating hole is formed in the main body template; the main body template is provided with a bending surface which is attached to physiological curvature of children femora; the osteotomy angle determining die and the osteotomy length determining die are vertically arranged, and the locating hole is formed in a connected position of the osteotomy angle determining die and the osteotomy length determining die. The locating tool provided by the invention is mainly used for the children femur osteotomy, the most important characteristic of the locating tool is that the locating tool is of an integrated arch structure which is suitable for the physiological curvature of the children femora, osteotomy angle determination and osteotomy length determination on the femora can be met simultaneously, a needle inserting angle is navigated, and the accuracy and the safety of a femur osteotomy operation are increased to the maximum.

Description

technical field [0001] The invention relates to an auxiliary tool for subtrochanteric osteotomy in children, in particular to a positioning tool for subtrochanteric osteotomy in children. Background technique [0002] For the clinical treatment of children with developmental dislocation of the hip, when there is a large difference in bilateral femoral anteversion, it is necessary to perform subtrochanteric osteotomy, rotate the distal femur, correct the anteversion of the femur, and perform plate internal fixation . [0003] At present, the common osteotomy methods mainly rely on the experience of clinicians. The disadvantages are that the length and angle of osteotomy cannot be accurately determined, and the Kirschner wire used in osteotomy cannot be inserted into the center of the femoral shaft accurately, so that it cannot be accurately Correcting the anteversion angle of the femur in children may lead to potential re-dislocation after surgery, the risk of femoral head n...

AI Technical Summary

Problems solved by technology

[0003] At present, the common osteotomy methods in clinical practice mainly rely on the experience of clinicians. The disadvantages are that the length and angle of osteotomy cannot be accurately determined, and the Kirschner wire used in osteotomy cannot be inserted into the center of the femoral shaft accurately, so that it cannot be accurately determined. Correcting the anteversion angle of the femur in children leads to potential re-dislocation after surgery, the risk of femoral head necrosis, and an increased incidence of early hip arthritis; even the operation fails due to miscalculation of the osteotomy angle and length

In addition, the currently used subtrochanteric osteotomy method is cumbersome and not suitable for osteotomy of complex deformities

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