Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Machine, CPM
Medically reviewed by Min Clinic Staff | Updated: January 2026
Machine, CPM: A machine used to help rehabilitate a limb (an arm or leg).
The continuous passive motion (CPM) machine is attached to, for example, a knee that has had surgery. The CPM machine then constantly moves the knee through a range of motion for a period of time while the patient relaxes.