What device continually moves the joint slowly through a controlled range?

What device continually moves the joint slowly through a controlled range?

• A. TENS Unit
• B. Manual Therapy
• C. Ultrasound
• D. Continuous Passive Movements (CPM)

Answer: (D)

Continuous Passive Movements move the joint automatically through a prescribed arc, without the patient actively contracting the muscles. The device cycles the limb gently and continuously through a controlled range, typically after surgery or injury, to maintain mobility, reduce stiffness, and promote tissue healing by keeping the joint in motion. This specific description doesn’t fit electrical stimulation (TENS), which provides nerve stimulation for pain relief; manual therapy, which is hands-on movement performed by a therapist; or ultrasound, which uses sound waves to heat or help healing tissues without moving the joint. CPM is the modality that exactly matches a device that continually moves the joint slowly through a controlled range.

Continuous Passive Movements move the joint automatically through a prescribed arc, without the patient actively contracting the muscles. The device cycles the limb gently and continuously through a controlled range, typically after surgery or injury, to maintain mobility, reduce stiffness, and promote tissue healing by keeping the joint in motion. This specific description doesn’t fit electrical stimulation (TENS), which provides nerve stimulation for pain relief; manual therapy, which is hands-on movement performed by a therapist; or ultrasound, which uses sound waves to heat or help healing tissues without moving the joint. CPM is the modality that exactly matches a device that continually moves the joint slowly through a controlled range.