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[Modes of medium failures after total hip arthroplasty in China: a single-center retrospective study]
Ti Zhang1, Chong Zheng1, Haiyang Ma1
1Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China.
Objective:
To explore the modes of medium failures after total hip arthroplasty (THA) in China and compare our results with foreign countries.
Methods:
Retrospective reviews were conducted for the causes of medium failures of 137 revision THAs between January 2007 and December 2013. The causes of failure included infection, aseptic loosening, dislocation, periprosthetic fracture, implant-related failure, heterotopic ossification and liner wear.
Results:
The causes in a decreasing order were aseptic loosening (55.5%, 76/137), infection (31.4%, 43/137), liner wear (6.6%, 9/137), periprosthetic fracture (5.1%, 7/137) and dislocation (1.5%, 2/137).
Conclusion:
The top three domestic causes of medium failure after primary THA are aseptic loosening, infection and liner wear.
