膝关节固定平台假体治疗老年骨性关节炎内翻畸形的临床应用

Application of fixed-bearing knee joint prosthesis in treatment of varus deformity in elderly osteoarthritis patients

目的观察膝关节固定平台假体在老年骨性关节炎内翻畸形全膝关节置换的临床效果。方法选取辽宁省本溪市第一人民医院2009年3月-2012年8月期间老年骨性关节炎应用膝关节固定平台假体行全膝关节置换术患者43例（56膝）,平均年龄75.5岁（72-85岁）,采用X线片及美国特种外科医院（hospital for special surgery,HSS）评分进行临床效果评估。结果平均随访27个月,HSS评分从术前平均51.9分增加到术后的91.1分。活动范围从术前平均伸5°、屈62.7°,到术后平均伸0°、屈130°,术前最大内翻畸形25°,最小内翻畸形5°,术后畸形角度全部得到矫正。结论膝关节固定平台假体置换治疗老年骨关节炎效果满意。

Objective To observe the clinical effect of fixed-bearing knee joint prosthesis on varus deformity in elderly osteoarthritis patients.Methods Forty-three osteoarthritis patients（56 knees） at the age of 75.5 years（range 72-85 years） admitted to Benxi No.1 People＇s Hospital from March 2009 to August 2012 were included in this study.The patients underwent total knee joint replacement.Their clinical outcome was assessed according to the X-ray examination and HSS score.Results The patients were followed up for an average time of 27 months.The average HSS score of their increased from 51.9 before operation to 91.1 after operation.The average extension and flexion range of their knee increased from 5 degrees and 62.7 degrees before operation to 0 degree and 130 degrees after operation.The maximum and minimum varus deformity angle of their knee was 25 and 5 degrees before operation,which were corrected after operation.Conclusion Fixed-bearing knee joint prosthesis can achieve a satisfactory outcome in elderly osteoarthritis patients.