单半径后稳定型假体全膝置换术后的中期随访报告

目的探讨单半径后稳定型假体全膝关节置换术后中期疗效。 方法回顾性研究上海市东方医院骨科自2012年6月至2015年1月，应用单半径后稳定型假体行全膝关节置换术(TKA)的20例(20膝)为观察组，纳入标准：初次单侧TKA，符合膝关节骨关节炎诊断标准；排除标准为双侧全膝关节置换术TKA或合并其他手术、药物成瘾、严重肝肾功能不全、类风湿关节炎、痛风性关节炎等其它炎症疾病、膝关节感染或可疑感染。其中女15例，男5例；平均年龄(68.3±0.5)岁。对照组20例为采用多半径后稳定型假体全膝置换。采用记录术前、末次随访美国膝关节协会评分(KSS评分)、膝关节功能评分，观察组与对照组的年龄、身体质量指数(BMI)、手术时间、KSS评分、功能评分比较采用t检验；观察组的术前与术后KSS评分、KSS功能评分及对照组的术前与术后KSS评分、KSS功能评分比较采用t检验，性别比例采用卡方检验。 结果所有病例均无感染，松动及静脉血栓症，平均随访(4.1±0. 6)年。术后随访X线片观察膝关节假体位置、力线等均显示良好。两组术后膝关节KSS评分(t＝1.428，P <0.05)、膝功能评分比较(t ＝2.75，P<0.01)差异均有统计学意义。 结论单半径后稳定型假体中期有令人满意的临床疗效。

Mid term follow-up report of total knee arthroplasty using single radius posterior stabilized prosthesis

ObjectiveTo evaluate the mid-term outcome of Single-radius posterior stable prosthesis for total knee arthroplasty. MethodsA retro-spective study was conducted on 20 cases (20 knees) of total knee arthroplasty (TKA) with single-radius posterior stable prosthesis from June 2012 to January 2015 in the orthopaedics department of Shanghai Oriental Hospital. Inclusion criteria were: first unilateral TKA, which met the diagnostic criteria for knee osteoarthritis; exclusion criteria were bilateral TKA or combined with other operations, drug addiction, severe liver and kidney dyas function rheumatoid arthritis, gouty arthritis and other inflammatory diseases, knee joint infections or suspicious infections.The observation group included 15 females and five males, with an average age of (68.3±0.5) years. In the control group, 20 patients underwent multi-radius posterior stable total knee arthroplasty. The KSS score and knee function score were recorded before and after the last follow-up. The age, body mass index (BMI), operation time, KSS score and function score of the observation group and the control group were compared by t test. The KSS score, KSS function score before and after the operation of the observation group and the KSS score and KSS function score before and after the operation of the control group were compared by t test, and the sex ratio was compared by t test; sexual difference was analysed by chi-square test. ResultsThe average follow-up period was (4.1±0.6) years. No infection, loosening or venous thrombosis was found. Postoperative follow-up X-ray showed good prosthesis position and force line. KSS score (t=1.428, P<0.05) and knee function score(t=2.750, P<0.01) showed significant differences between the two groups. ConclusionThe mid-term clinical effect of single-radius posterior stable prosthesis is satisfactory.