金属对金属全髋关节表面置换术后解剖学重建的相关研究

目的 分析髋关节表面置换术后生物力学重建情况及其对髋关节表面置换术后的功能影响.方法 2005年1月～2008年1月对30例30髋患者行全髋关节表面置换,所有患者均行术前后HARRIS评分、X线检查及解剖学重建评估.结果 术后髋关节表面置换术后患者下肢平均短缩2.4mm,股骨偏心距短缩约5.45mm,与健侧相比无显著性差异.患者术后无一例发生髋关节脱位,术前和术后髋关节HARRIS评分分别为36.69±7.16.和89.63±3.36(P＜0.01).结论 髋关节表面置换术后可达到良好的生物力学重建,同时其大假体设计可有效保证关节置换术后的稳定性及良好的关节功能重建.

Biomechanical reconstruction of the hip in metal-on-metal total hip resurfacing

OBJECTIVE: To analyze the effect of biomechanical reconstruction of the hip in metal-on-metal total hip resurfacing. METHODS: Thirty patients undergoing hip resurfacing arthroplasties were enrolled in this study. The clinical outcomes of the patients were assessed according to the Harris Hip Score before and after the surgery, X-ray examinations and biomechanical reconstruction evaluations. RESULTS: After the operation, the length of the patients' legs was shortened by a mean of 2.4 mm. and the femoral offset was decreased by a mean of 5.45 mm. No dislocation were be found in these patients. The preoperative Harris Hip Score was 36.69-/+7.16, significantly lower than that postoperative score (89.63-/+3.36, P<0.01). CONCLUSION: Precise biomechanical reconstruction of the hip can be achieved in hip resurfacing arthroplasty, and the stability and functional restoration is guaranteed by large diameter prosthesis design.