计算机辅助下的全膝关节置换术早期疗效分析

目的：通过对计算机辅助下的全膝关节置换术与传统膝关节置换术在术后1年的近期疗效对比，探讨计算机辅助下的膝关节置换术的优势。方法2013年9月至2014年9月将60例患者分成两组，分别进行计算机辅助下的全膝关节置换术（导航组）和传统的全膝关节置换术（传统组）。并对每例患者进行术前、术后1年的KSS评分、WOMAC评分、Oxford评分、下肢全长X线片进行统计分析。结果患者随访时间12～14个月，平均12个月，导航组的下肢机械轴为—0.033o±1.470o，传统组的下肢机械轴为0.600o±2.989o；获得3o以内的内外翻力线的比例分别为86.70％和73.30％，术后 KSS 评分两组分别为（88.80±3.71）分和（82.63±4.15）分；WOMAC评分为（23.57±3.64）分和（30.00±4.89）分、Oxford评分为（18.53±3.66）分和（21.83±3.99）分，上述4项数据两组间差异均有统计学意义（ P＜0.05）。结论通过计算机辅助下的全膝关节置换术，可获得更精确的下肢力线，且临床康复效果更具有优势。

Analysis of early postoperative curative effect for computer-assisted total knee arthroplasty

Objective To explore the advantages of computer assisted total knee arthroplasty(TKA)by comparing the post-operative 1 year short term effect of the computer assisted TKA and the conventional TKA .Methods A total of 60 patients from September 2013 to September 2014 were randomly divided into two groups and performed TKA by adopting the computer-assisted technology and the conventional technology respectively .The KSS score ,WOMAC score ,Oxford score and long-leg weight-bearing X-ray before operation and at postoperative 1 year were performed for each case and the statistical analysis was conducted . Results All cases were followed up for an average of 12 months (12—14 months) .The mechanical limb axis in the navigation as-sisted group was —0 .033o± 1 .470o ,which in the traditional group was 0 .600o± 2 .989o(t= —1 .711 ,P<0 .05);the proportions of within 3o varus/valgus force lines were 86 .70% and 73 .30% respectively ,the KSS scores were 88 .80 ± 3 .71 and 82 .63 ± 4 .15;the postoperative WOMAC scores were 23 .57 ± 3 .64 and 30 .00 ± 4 .89 respectively ;the Oxford scores were 18 .53 ± 3 .66 and 21 .83 ± 3 .99 ,the differences between the two groups were statistically significant (P<0 .005) .Conclusion TKA by computer navigation guidance can obtain more accurate lower limb force lines ,moreover the navigation group has more advantages in the clinical rehabili-tation effect .