Abstract:

OBJECTIVE: To explore the dynamic features of knee flexion movement to provide relative movement and stress distribution for studies on artificial knee joint bio-tribology.
METHODS: A computer-based online search of CNKI was performed for articles related to artificial knee movement and friction published between 1994 and 2009 with key words “knee prosthesis, biomechanics, wearing debris, bionic lubrication”. Outdate articles and repetitive studies were excluded, and 22 articles were included.
RESULTS: Dynamic finite element models of knee joint including bone and soft tissues following total hip replacement are established. Three dimensional relative movement parameters of knee flexion and extension, as well as contact position and stress of tibial and hip and femoral joints are obtained using finite element analysis.
CONCLUSION: Artificial knee joint wearing performance is influenced by many factors. Many studies focus on some factor alone, and mainly describe experimental results, but not further exploration of joint movement and wearing mechanism. Studies of artificial knee joint movement and wearing performance should combine kinematics and mechanics with wearing status for prediction of wearing.