Simon J A, Dayan A J, Ergas E, Stuchin S A, Di Cesare P E
Hospital for Joint Diseases, New York, New York 10003, USA.
J Arthroplasty. 1998 Jan;13(1):108-13. doi: 10.1016/s0883-5403(98)90085-7.
Recent research in total hip arthroplasty has focused on attempts to decrease wear at the femoral head-acetabulum articulation, to limit the production of debris that is believed to lead to osteolysis and prosthetic loosening. The use of ceramic-on-polyethylene bearing surfaces has been reported to produce lower wear rates and therefore may increase the life expectancy of the joint arthroplasty. Problems with this bearing have been reported to be due to ceramic femoral head fracture. Reported here are 2 cases of catastrophic failure of total hip arthroplasties, involving a ceramic femoral head, caused by failure of the polyethylene acetabular liner, with subsequent penetration of the femoral head through the acetabular shell.
近期全髋关节置换术的研究主要集中在减少股骨头与髋臼关节面磨损的尝试上，以限制被认为会导致骨溶解和假体松动的碎屑产生。据报道，使用陶瓷对聚乙烯的关节面可产生较低的磨损率，因此可能会延长关节置换术的使用寿命。据报道，这种关节面的问题是由于陶瓷股骨头骨折所致。本文报告了2例全髋关节置换术的灾难性失败病例，均涉及陶瓷股骨头，病因是聚乙烯髋臼内衬失效，随后股骨头穿透髋臼壳。
