The primary purpose for using a continuous passive motion (CPM) machine for the client with a total knee repair is to help:
A. Inhibit lactic acid production in the leg muscles
B. Prevent contractures
C. Decrease the pain associated with early ambulation
D. Promote flexion of the artificial joint
Correct Answer: D. Promote flexion of the artificial joint
Option D: Continuous passive motion (CPM) machine is an equipment used as part of the rehabilitation process following joint or hip surgery. The primary purpose of the continuous passive-motion machine is to promote the flexion of the artificial joint. The device should be placed at the foot of the client’s bed.