应用非限制型全膝关节假体治疗僵直型膝关节疗效分析

The effect of ankylosed knee treated with total knee arthroplasty by unconstrained prosthesis

目的：探讨非限制型全膝关节假体治疗僵直型膝关节的临床疗效.方法：对收治的12例僵直型膝关节行非限制型假体的全膝关节置换患者进行回顾性研究,其中男5例,女7例,年龄39 ～78岁,平均52岁.采用膝关节HSS评分和疼痛VAS评分评定膝关节功能.结果：12例患者均获得随访,平均随访时间25个月（3～37个月）.术后膝关节屈曲60°～95°,膝关节伸直迟滞7°.术后膝关节无明显疼痛9例,膝关节疼痛VAS评分≤4分：3例.HSS评分：术前42分,术后最后随访84分,优良率为83％.中期随访所有患者未发现明显假体松动,未出现假体周围感染,无翻修患者.结论：应用非限制型假体行全膝关节置换治疗僵直型膝关节,临床效果满意.

Objective To investigate the clinical effects of ankylosed knee treated with total knee arthroplasty by unconstrained prosthesis. Method 12 patients with ankylosed knee were collected,including 5 males and 7 females, aged 39 -78 years, an average of 52 years old. They were treated with total knee arthroplasty by unconstrained prosthesis. HSS score system and VAS score were used to evaluate the post - operation knee functions. Results All the patients were followed - up with an average time of 25 months （ range 3 - 37 months）. The extension of knee activity was residual 7°and flexion was 60° -95°respectively. 9 patients had no knee pain postoperatively. 3 patients had VAS score less than 4 point. Preoperative HSS score was 42 point and postoperative was 84 point. The excellent and good rate was 83%. No infection and loosening or subsidence of prosthesis was observed. Conclusion Total knee arthroplasty by unconstrained prosthesis is an effective method for the treatment of ankylosed knee.