A CPM machine is a device fitted to the leg, usually after surgery, to keep the limb slowly bending and straightening.

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.


Preventing adhesions

The idea behind CPM is that it should help to prevent the formation of adhesions and consequent knee stiffness.

Continuous passive motion machine

A discussion of those triggers that may lead to a stiff knee after knee replacement.

A quick overview of factors that may help prevent knee stiffness after knee arthroplasty.

CPM - continuous passive motion

Passive gentle machine-assisted exercise to maintain range of motion.

Day 2 - Things to buy or hire before the big day

A 5-day challenge to see how prepared you are for rehab at home after surgery.



Continuous Passive Motion, Early Weight Bearing, and Active Motion following Knee Articular Cartilage Repair. Howard JS, Mattacola CG, Romine SE and Lattermann C. Cartilage. 2010 Oct; 1(4): 276–286.

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