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Continuous passive motion after total knee arthroplasty.

T H Goletz, J H Henry

    Southern Medical Journal
    |September 1, 1986
    PubMed
    Summary
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    Continuous passive motion (CPM) after total knee replacement can reduce hospital stay and improve knee flexion. A new protocol aims to maximize CPM benefits while minimizing wound healing complications.

    Area of Science:

    • Orthopedic Surgery
    • Rehabilitation Medicine

    Background:

    • Total knee replacement (TKR) is a common procedure to alleviate pain and restore function.
    • Postoperative rehabilitation protocols significantly influence patient outcomes.

    Purpose of the Study:

    • To evaluate the efficacy of continuous passive motion (CPM) in patients undergoing total knee replacement.
    • To identify potential complications associated with CPM and develop a protocol to mitigate them.

    Main Methods:

    • A retrospective clinical study comparing 19 patients who received CPM with 15 control patients who did not.
    • Analysis of discharge duration, knee flexion, blood loss, and wound healing complications.

    Main Results:

    • CPM group showed reduced hospital stay (16 vs. 20 days) and faster achievement of 90-degree knee flexion (9 vs. 16 days).

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  • Excluding complicated cases, CPM group discharge was 12 days.
  • Four wound healing complications occurred in the CPM group, all in patients with rapid flexion (<6 days).
  • No significant difference in average blood loss between groups.

    • Conclusions:

    • CPM can be beneficial for total knee replacement recovery, improving discharge times and range of motion.
    • A protocol was developed to optimize CPM use, preventing wound complications by managing the rate of knee flexion.