Certified Biomedical Equipment Technician (CBET) Practice Exam

A continuous passive motion (CPM) device is primarily used following knee surgery to promote healing and restore joint mobility. After procedures such as knee arthroplasty or ligament reconstruction, a CPM device helps maintain joint movement without requiring active effort from the patient. This is essential for preventing stiffness, reducing pain, and enhancing recovery by promoting circulation in the area. While other types of surgeries might involve rehabilitation and physical therapy, knee surgeries specifically benefit from the gentle and continuous motion provided by a CPM device, making it a crucial tool in postoperative care for those patients. In contrast, the other types of surgeries listed—dialysis, heart surgery, and back surgery—typically do not use CPM devices as part of their standard recovery protocols.