Leach W, Reid J, Murphy F
Department of Orthopaedics, Western Infirmary, Dumbarton Road, Glasgow, G11 6NT, UK.
Knee Surg Sports Traumatol Arthrosc. 2006 Oct;14(10):922-6. doi: 10.1007/s00167-006-0042-9. Epub 2006 Feb 18.
We have carried out a prospective randomised, single blind clinical trial to investigate the effect of continuous passive motion on range of knee flexion, lack of extension, pain levels and analgesic use after total knee replacement surgery. 85 subjects were randomly allocated to control or study group. All subjects followed the existing rehabilitation protocol, which permits immediate active range of motion exercises and mobilisation with the study group using continuous passive motion for 1 h, twice a day. Outcome measures employed were range of motion, pain assessed on a visual analogue scale and analgesic use according to the WHO ladder. Blinded evaluation was carried out preoperatively, at time of discharge from hospital, 6 weeks, 6 and 12 months postoperation. No significant difference was observed between groups at all time intervals for each outcome variable using Wilcoxon Rank sum tests. The results substantiate previous findings that short duration continuous passive motion following total knee arthroplasty does not influence outcome of range of motion or reported pain.
我们开展了一项前瞻性随机单盲临床试验，以研究全膝关节置换术后持续被动运动对膝关节屈曲范围、伸直受限、疼痛程度及镇痛药使用的影响。85名受试者被随机分配至对照组或研究组。所有受试者均遵循现有的康复方案，该方案允许立即进行主动活动度练习，并让研究组每天使用持续被动运动2次，每次1小时。采用的结局指标包括活动度、视觉模拟量表评估的疼痛以及根据世界卫生组织阶梯法评估的镇痛药使用情况。在术前、出院时、术后6周、6个月和12个月进行盲法评估。使用Wilcoxon秩和检验，各时间点各结局变量在两组间均未观察到显著差异。结果证实了先前的研究结果，即全膝关节置换术后短时间的持续被动运动不会影响活动度或报告的疼痛结局。
