Department of Orthopedic Surgery, Hospital Clinico San Carlos, Madrid, Spain.
J Arthroplasty. 2011 Dec;26(8):1326-31. doi: 10.1016/j.arth.2010.11.020. Epub 2011 Jul 12.
A clinical study has been carried out on 434 posterior-stabilized knee prostheses (Optetrak; Exactech, Gainesville, Fla) implanted between 1995 and 2000 in a university general hospital by 23 surgeons. At a mean follow-up of 8.8 years, 297 knees in 249 patients were available for review. Average patient age at surgery was 71.8 years. Average body mass index was 28.8 kg/m(2). Mean flexion range was 108° .The average knee score (Hospital for Special Surgery) increased from 48 points preoperatively to 86 points (60-97 points) at the final review. Of the patients, 81% had an excellent or good result, 14.9% had a fair result, and 4.1% had a poor result. Using the Kaplan-Meier method, we obtained a 91.3% predicted implant survival at 12 years including septic and aseptic revision in the best-case scenario.
一项临床研究对 23 位外科医生于 1995 年至 2000 年在一所大学附属医院植入的 434 例后稳定型膝关节假体（Optetrak；Exactech，盖恩斯维尔，佛罗里达州）进行了研究。在平均 8.8 年的随访中，249 名患者中的 297 个膝关节可进行评估。手术时患者的平均年龄为 71.8 岁。平均体重指数为 28.8kg/m²。平均屈曲范围为 108°。术前膝关节评分（特种外科医院）平均为 48 分，最终随访时平均为 86 分（60-97 分）。81%的患者结果为优或良，14.9%为可，4.1%为差。采用 Kaplan-Meier 法，在最佳情况下包括感染性和无菌性翻修，12 年时预测假体存活率为 91.3%。
