What is CPM?
A continuous passive motion device maintains movement of a joint after limb sparing surgery. This device is usually called a CPM. Continuous movement limits stiffness and pain. It is very important to keep joints moving following surgery so that motion will not become limited. The CPM will move the involved leg through its full range of motion. It is only used in bed, but can be used while relaxing, eating, or sleeping.
How does CPM help?
Swelling is common in the first 24 hours after surgery. A CPM is used after surgery to help pump fluid away from the joint. By reducing blood and fluid build-up in and around joints, it also aids in returning motion to the joint. Failure to achieve full motion shortly after surgery may allow scar tissue to form. Use of a CPM after surgery increases the chances of regaining full joint motion. Full range of motion may never be recovered if it is not regained shortly after surgery.
How should I use CPM?
It is important that you understand the use of CPM. The therapist may adjust the device to fit you before surgery. You will begin to use the CPM right after surgery. Your therapist will give you instructions and monitor how you use the device. The CPM is set to allow 45 degrees of motion right after surgery. Generally, motion will be increased about 15 degrees a day. You will need to use the CPM for about 6 weeks after surgery.
If you have questions about continuous passive motion therapy, call Rehabilitation Services at 595-3621. If you are inside the hospital, dial 3621. If you are outside the Memphis area, call toll-free 1-866-2ST-JUDE (1-866-278-5833), extension 3621.
This document is not intended to take the place of the care and attention of your personal physician or other professional medical services. Our aim is to promote active participation in your care and treatment by providing information and education. Questions about individual health concerns or specific treatment options should be discussed with your physician.
St. Jude complies with health care-related federal civil rights laws and does not discriminate on the basis of race, color, national origin, age, disability, or sex.
ATTENTION: If you speak another language, assistance services, free of charge, are available to you. Call 1-866-278-5833 (TTY: 1-901-595-1040).
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