A CPM machine is a device fitted to the leg, usually after surgery, to keep the limb slowly bending and straightening. CPM stands for Continuous Passive Motion.
Page updated January 2024 by Dr Sheila Strover (Clinical Editor)
The device is usually set up by a physiotherapist or experienced orthopaedic nurse, and the range of motion and speed pre-determined.
What is continuous passive motion CPM therapy used for?
The idea behind Continuous Passive Motion is that it should help to prevent the formation of adhesions and consequent knee stiffness.
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Peer-reviewed papers
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Quote:
After knee replacement..."there is no significant effect of CPM in terms of improving clinical measurements. However, there was a significant beneficial effect on the subjective assessment of pain level, joint stiffness, and functional ability."
Citation: Richter M, Trzeciak T, Kaczmarek M. Effect of continuous passive motion on the early recovery outcomes after total knee arthroplasty. Int Orthop. 2022 Mar;46(3):549-553. doi: 10.1007/s00264-021-05245-5. Epub 2021 Oct 21. PMID: 34674021; PMCID: PMC8840904.
Synonyms:
Continuous passive motion machine
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