Terré Ricardo A
Orthopaedic Department, Hospital Mateu Orfila, Mahon, Minorca, Spain.
Hip Int. 2010;20 Suppl 7:S70-8. doi: 10.1177/11207000100200s713. Epub 2010 May 27.
We retrospectively assess 171 consecutive total hip arthroplasties (THAs) with a Spotorno CLS uncemented prosthesis implanted through a Hardinge approach. The mean follow-up was 17.9 years. All consecutive operations were performed by 1 surgeon. Eight patients had been lost to follow-up, and 77 had died for unrelated causes. Overall, 4 stems and 19 cups underwent revision. The cumulative survival rate at 21 years was 79.02% (95% confidence interval [95% CI], 45.98-100.00%) for the acetabular component and 96.71% (95% CI, 60.71-100.00%) for the stem. We can conclude that failure of the Spotorno CLS THA is mainly due to its acetabular component (relative risk 4.5). Survival results for the Spotorno CLS stem exceed the patients? life expectancies in the 60- to 70-year-old population in our area. Loosening with or without fatigue fracture of the component and the learning curve for proper implantation have been the main causes for the expansion cup failure.
我们回顾性评估了171例连续的全髋关节置换术（THA），这些手术采用Hardinge入路植入Spotorno CLS非骨水泥假体。平均随访时间为17.9年。所有连续手术均由1名外科医生完成。8例患者失访，77例因无关原因死亡。总体而言，4个股骨柄和19个髋臼杯进行了翻修。髋臼组件在21年时的累积生存率为79.02%（95%置信区间[95%CI]，45.98 - 100.00%），股骨柄为96.71%（95%CI，60.71 - 100.00%）。我们可以得出结论，Spotorno CLS全髋关节置换术的失败主要归因于其髋臼组件（相对风险4.5）。Spotorno CLS股骨柄的生存结果超过了我们地区60至70岁人群的预期寿命。组件松动伴或不伴有疲劳骨折以及正确植入的学习曲线是髋臼杯失败的主要原因。
