Surgery technique of ceramic-on-ceramic total hip replacement and related research / 中国矫形外科杂志

ABSTRACT

[Objective]To introduce the surgical technique of ceramic-on-ceramic total hip replacement and discuss the difference between two implant design.[Method]From November 2001 to June 2006,123 hip in 101 patients were treated by total hip arthroplasty with Osteonics ABC and Option Hip System.The prosthesis was fixed in strict position following some special technique for ceramic components.The theoretic range of motion of two hip systems were measured from experiment in vitro.The different cup positions which impingement happened were record for each prosthesises.[Result]The clinical score and the radiographic position of implants was good without evidence of wear,loosening,osteolysis and ceramic fracture.One chipping of ceramic insert happened during operation,and two patients had temporary irritation of iliopsoas.No other sever complication were found so far such as dislocation and infection.Experiment result:The deepened cup design obviously decreased the hip range of motion and "safe zone" was narrow than the flat cup design.[Conclusion]Ceramic-on-ceramic hip implant highly demands for surgical technique especially accurate cdp position.The deepened cup design cup should be posited with large anteversion.