[Rolling friction: a desing of artificial knee joint].
Resorption and osteolysis of periimplant bones resulting from the wear debris of artificial joint will cause long-term loosening. A new type of rolling knee artificial joint without UHMWPE based on the mechanics of rolling friction is designed for alleviating this problem. Because of low friction force, the resistance of extension and flexion is reduced strikingly and the stress on the interface between prosthesis and bone is reduced evidently. In addition, the bio-toxicity caused by the wear debris of UHMWPE will not occur absolutely. In consequence, the rolling artificial joint can prevent the trend of long-term loosening of the prosthesis efficiently.
He
Yujue
Y
College of Mechanical Engineering, Shanghai Jiaotong University, Shanghai, China. hyjhh@sjtu.edu.cn
Yu
Zhongjia
Z
Chen
Ming
M
Wang
Chengtao
C
D000818:Animals; D019645:Arthroplasty, Replacement, Knee; D002516:Ceramics / Q000737:chemistry*; D017076:Computer-Aided Design; D004285:Dogs; D006801:Humans; D007720:Knee Prosthesis; D008422:Materials Testing; D011095:Polyethylenes; D011474:Prosthesis Design; D014800:Vitallium / Q000737:chemistry*
D011095:Polyethylenes; C111601:ultra-high molecular weight polyethylene; D014800:Vitallium