全髋关节置换术后的髋关节合力

Resultant hip joint force after total hip replacement.

作者信息

Antolic V, Iglic A, Herman S, Srakar F, Macek Leber A, Krajl Iglić V, Brajnik D, Stanic U

机构信息

University Clinical Hospital for Orthopaedics, Ljubljana, Slovenia.

出版信息

Acta Chir Orthop Traumatol Cech. 1994;61(1):42-4.

PMID:8178609

Abstract

Bending moments acting on the LIMA-LTO femoral stem were calculated using a 3D mathematical model of the hip in the one-legged stance based on muscle anatomical data. The effects of 1 cm medialization and lateralization of the hip joint rotation centre (RC) on the bending moments were determined for different body weights. It was found that the bending moments and hence the stem loosening incidence are higher in lateralization compared to medialization of the RC. In order to diminish the bending moments, body weight should be reduced.

摘要

基于肌肉解剖数据，使用单腿站立时髋关节的三维数学模型计算作用于左胸廓内动脉-隐静脉移植（LIMA-LTO）股骨柄的弯矩。针对不同体重，确定髋关节旋转中心（RC）向内和向外1厘米移位对弯矩的影响。结果发现，与RC向内移位相比，RC向外移位时的弯矩更高，因此柄松动发生率也更高。为了减小弯矩，应减轻体重。