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| Prospective randomized clinical trial of continuous passive motion after total knee arthroplasty |
| MacDonald SJ, Bourne RB, Rorabeck CH, McCalden RW, Kramer J, Vaz M |
| Clinical Orthopaedics and Related Research 2000 Nov;(380):30-35 |
| clinical trial |
| 5/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed* |
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The authors report the results of a prospective randomized clinical trial using continuous passive motion after total knee arthroplasty. One hundred twenty patients were assigned randomly to one treatment group: No continuous passive motion (group I), continuous passive motion from 0 degrees to 50 degrees and increased as tolerated (group II), and continuous passive motion from 70 degrees to 110 degrees (group III). The continuous passive motion was initiated in the recovery room and was maintained for a maximum of 24 hours at which point all patients began identical postoperative physiotherapy regimens. Patients were assessed preoperatively, during their hospital stay, at 6 weeks, 12 weeks, 26 weeks, and 52 weeks after their surgery. There were no statistical differences between any of the treatment groups regarding cumulative analgesic requirements, range of motion at any measured interval, length of stay (group I, 5.1 days; group II, 5.2 days; group III, 5 days) or Knee Society scores. The current study does not support the use of short-term continuous passive motion after total knee replacement. A standard and a high flexion continuous passive motion protocol failed to show any advantage over physiotherapy alone in the parameters evaluated.
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