反“卓别林”步态防治股骨头坏死的三维有限元分析

Three Dimensional Finite Element Analysis on the Treatment of Avascular Necrosis of the Femoral Head with Anti-Chaplin Gait

目的:研究反“卓别林”步态锻炼防治股骨头坏死的生物力学机制。方法:建立髋关节三维有限元模型,计算关节反力,将合力加载于模型,应用Sap-93软件分析股骨头不同部位受力情况。结果:在反“卓别林”步态位时,股骨头负重面及锥形负重区受力显著减小(P<0.01),负重面内、后侧受力显著减小(P<0.01)。结论:采用反“卓别林”步态可以显著减小股骨头的负荷,可作为股骨头坏死患者功能锻炼的有效方法。

Objective：To study the mechanism of biomechanics on the treatment of avascular necrosis of the femoral head with Anti-Chaplin gait.Methods：We constitute the Three-dimensional-finite-element model of hip joint,calculate the resultant force,and load the force on the model,Analysis the dynam of the femoral head with Sap-93 software.Results：The force on the surface of femoral head and taper region is minished.The force on the medial and posterial side of the surface of femoral head is also minished.Conclusions：The load on the surface of femoral head is minished notabily in the State of Anti-Chaplin.gait.It is an available method treating avascular necrosis of the femoral head with Anti-Chaplin grit.