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)

continuous passive motion
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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Continuous passive motion machine

Dr Sheila Strover (Editor)
BSc (Hons), MB BCh, MBA

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