Knee CPM Units
PURPOSE: Continuous Passive Motion (CPM) units are electrically powered devices that move a specific joint through its range of motion. By using a motorized device to gradually move the knee joint, it is possible to significantly accelerate recovery time by decreasing joint stiffness, increasing range of motion, promoting healing of joint surfaces and soft tissues, and preventing the development of motion-limiting adhesions (scar tissue).
TYPES: There are specific types of CPM units for different body joints. Each type of unit is specifically designed for one particular joint. Each CPM unit has different controls and adjustments. Never make the assumption that because you used a knee CPM unit before that you can operate every CPM unit. Newer CPM units have many new features that can decrease discomfort and optimize your post-surgical recovery.
USE: The CPM unit is always setup by your medical equipment company. The settings for the machine are prescribed by a surgeon or physical therapist and should never be manipulated by the user. There are specific instructions and safety precautions that must be followed when setting up your CPM unit. CPM units are usually prescribed for two weeks or less. Never allow any liquid to spill on the CPM unit. If liquid spills on the CPM unit, immediately unplug the unit and clean up the liquid.
An interface kit is usually applied to the CPM unit to provide padding and comfort. The CPM unit is adjusted to your leg length by measuring you from your hip to your knee joint; this is a crucial measurement and should be performed accurately. A technician will also set the unit’s extension and flexion angles. You should not adjust these prescribed settings. If you experience pain that inhibits your use of the knee CPM unit, contact your surgeon or therapist immediately.
SAFETY: Knee CPM units are sophisticated pieces of equipment and unqualified persons should not be allowed to operate the unit – especially children. You should never place anything on or under the moving components of the knee CPM unit. Always abide by the manufacturer’s operational and safety guidelines. Always follow your physician or therapist’s instructions on treatment duration, ambulation, and medication use.
MAINTENANCE: A certified professional should only perform maintenance. Your medical equipment company is fully qualified to fix and maintain knee CPM units. If you suspect your CPM unit has any problem, consult them immediately. Do not use the CPM unit until it has been evaluated.