Wilke Benjamin K, Wagner Eric R, Trousdale Robert T
Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota.
J Arthroplasty. 2014 May;29(5):1005-8. doi: 10.1016/j.arth.2013.10.025. Epub 2013 Oct 31.
Semi-constrained implants provide stability in the setting of soft-tissue deficiency in revision total knee arthroplasty (TKA). This study evaluated our institution's long-term survival results with a semi-constrained implant used in the revision TKA setting. 234 semi-constrained revision total knee arthroplasties were performed in 209 patients. The average follow-up was 9 years. Forty repeat revisions were performed. 5-year survival was 91% and 10-year survival was 81%. Male gender significantly increased the risk of revision. At 10 years the average range of motion, pain level, and Knee Society score improved significantly (P < 0.001). Ninety percent of patients reported an improvement in their knee. The semi-constrained implant used in revision knee arthroplasty has acceptable implant survival and functional outcomes in the long-term follow-up period.
半限制性植入物在翻修全膝关节置换术（TKA）中软组织缺损的情况下可提供稳定性。本研究评估了我们机构在翻修TKA中使用半限制性植入物的长期生存结果。对209例患者进行了234例半限制性翻修全膝关节置换术。平均随访时间为9年。进行了40次再次翻修。5年生存率为91%，10年生存率为81%。男性显著增加了翻修风险。在10年时，平均活动范围、疼痛程度和膝关节协会评分有显著改善（P<0.001）。90%的患者报告膝关节有所改善。在长期随访期间，用于翻修膝关节置换术的半限制性植入物具有可接受的植入物生存率和功能结果。
