异体骨移植在全髋关节置换术后感染股骨翻修中的应用

目的 探讨异体骨植骨治疗髋关节置换术后感染股骨骨质缺损的有效性与可行性.方法 髋关节置换术后感染股骨侧骨质缺损患者20例,在二期翻修时采用异体植骨,其中16例股骨侧使用骨水泥固定假体结合打压植骨,4例股骨侧使用非骨水泥固定假体结合异体皮质骨支撑植骨.术后定期随访,根据X线片及Harris评分结果进行评价.结果 所有患者均获随访,平均随访时间20.3个月(4～61个月),X线片上无明显异体骨溶解征象,Harris评分从术前的平均34.2分提高到最后随访时的平均87.7分,患者满意率为90%,在最后随访时没有感染复发患者.结论 异体骨植骨治疗髋关节置换术后感染后股骨侧骨质缺损是有效且可行的.

The use of bone allograft in the treatment of infected total hip arthroplasty

Objective A two-stage renovation has nowadays been considered as the optimal mode for the treatment of infected total hip joint.Extensive bone defects were often found during the subsequent operation,and they should be repaired by using allograft to attain stability of the implants.The purpose of present study is to investigate the efficacy and safety of employing bone allograft in repairing the femoral defect caused by post-operation infection of hip arthroplasty in the second stage operation.Method From Mar.2001 to Dec. 2006,a total of 20 patients(20 hips)with infected total hip arthroplasty were treated with bone allograft on the femoral side in the second operation.Impaction bone grafting technique was performed for 16 patients using bone allograft combined with cemented stems,and un-ce- mented prosthesis combined with bone strut allograft were used in the other 4 cases.A regular follow-up was done and the outcomes were evaluated using the Harris Hip Score System and radiography.Result All patients were followed-up clinically and radiographically for an average of 20.3 months(4-61 months).No re-infection was found at the last time of follow-up.The mean Harris Hip Score was in- creased from 34.2 before operation to 87.7 after operation.90% of the patients were satisfactory with the results.Conclusion The bone allograft can be used for reconstructing bone defects in the patients after infection of total hip arthroplasty,either with combined with ce- mented stems or non-cemented stems.It is an effective and safe way in dealing with femoral bone defect after infection of total hip arthro- plasty.