Objective : finite element method and photoelastic experiment were used to study the principle of stress and strain on knee joint from genu varum 30 degree to genu valgum 30 degree . biomechanics proofs were provided about it ' s bad effects and treatment on clinical 目的：本课题采用有限元和光弹性的实验方法，研究膝关节由内翻30至外翻30之间的应力应变规律，为全面了解膝内、外翻所产生的不良后果和临床治疗该病提供生物力学依据。
