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Continuous passive motion following total knee replacement: a prospective randomized trial with follow-up to 1 year

  • Knee
  • Published:
Knee Surgery, Sports Traumatology, Arthroscopy Aims and scope

Abstract

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.

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Acknowledgements

We thank Mr M. Kelly, Consultant Orthopaedic Surgeon, Western Infirmary, Glasgow and Mr J. Norrie, Assistant Director, Department of Biostatistics, Glasgow University.

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  1. Department of Orthopaedics, Western Infirmary, Dumbarton Road, Glasgow, G11 6NT, UK

    W. Leach, J. Reid & F. Murphy

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  1. W. Leach
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  2. J. Reid
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  3. F. Murphy
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Correspondence to J. Reid.

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Leach, W., Reid, J. & Murphy, F. Continuous passive motion following total knee replacement: a prospective randomized trial with follow-up to 1 year. Knee Surg Sports Traumatol Arthrosc 14, 922–926 (2006). https://doi.org/10.1007/s00167-006-0042-9

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  • DOI: https://doi.org/10.1007/s00167-006-0042-9

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