• Department of Orthopaedic Surgery;;
  • Northwest Architecture Engineering Institute;;
  • Xian 710061;;
Femoral head; Prosthesis stem; Photoelastic study
Export PDF Favorites Scan Get Citation

Abstract Full text Figures/Tables References Cited by

Abstract The fracture of the prosthetic stem after prosthetic replacement of femoral head is not rare. In this study, the photoeastic instrument was used to study the stress distribution on the prosthetic stem following its insertion and to analyse the factors influencing the fracture of the stem. Through the examination of 9 places in 8 cases, it was found that:(1) The removal of femoral calcar and the inframedullary filling of the bone cement directly influenced the stress distribution. (2) The valgus or varus condition of the prosthesis would lead to stress concentration on the stem. (3) Once lossening of the prosthesis occured it would change the preliminary installingstress distribution in the upper femur which would lead to fatigue fracture. Ths experimental data and clinical observation would provide scientific basis forthe prevention of fracture of prosthetic stem following prosthetic replacement of femoral head.

Citation： Mao Xiaogang,Zhao Junhai,Zhang Guoqing,et al.. PHOTOELASTIC STUDY OF FRACTURE OF PROSTHETIC STEM AFTER FEMORAL HEAD REPLACEMENT. Chinese Journal of Reparative and Reconstructive Surgery, 1996, 10(3): 157-160. doi: Copy