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Continuous Passive Motion or CPM machines are motorized physical therapy equipment which are used in the recovery of a joint after an extensive surgery. A CPM machine brings down blood and fluid accumulation in and around the joints that may occur after a surgery or due to trauma. It also maintains normal motion of the knee after a knee replacement surgery. These devices provide effective post-operative range of motion for the knees, ankles, hip-joints, wrists or hands with minimal effort. We carry a range of high-quality CPM machines from top manufacturers like Kinetic USA, Chattanooga Group, Bodymed and Medline Industries.

How Does a CPM Machine Work?

This physiotherapy equipment works the joint through a range of motion (ROM) without any effort from the user. The affected joint, like the knee, elbow, wrist, ankle, hand and wrist, is placed in a mechanical split and moved constantly without normal muscle function. Understanding how long to use a CPM machine will depend on the condition of the affected joint and when the patient is able to perform the movement without assistance. Usually, the surgeon puts the patient on the machine after the surgery and makes him continue until 3-4 weeks following surgery.

How to Use CPM Machine?

Most continuous passive machine therapy starts in the hospital and continues at home. Physiotherapists may work differently depending on their patients’ conditions. Some may recommend starting at a pre-defined flexion (usually between 0-60 degrees) and increasing flexion by 5-10 degrees each day until it reaches 110. Another may use 0 to 40 degrees to start with. The general recommendation is to use the machine thrice daily with each session lasting two hours for a total of six hours each day.

Benefits Of CPM Machine

In the post-operative stiffness stages, the machine pumps away the accumulated blood and edema fluid from the peri articular tissues and the affected joint. This prevents subsequent joint stiffness to occur in the first few hours or days of the surgery and brings down risks of fibrosis of the joint and setting in of contracture. The joint motion is important to ensure the health of the articular cartilage and considered a timely care of the joint to ensure long-term mobility.


Types of CPM Machines

Knee CPM

  • Knee CPM machines are popular for their use after a knee surgery or knee replacement procedure. They get the patient out of the hospital and back on their feet quickly.
  • The Kinetec Spectra Knee CPM Machine is an example of an effective CPM machine for the knee. It bends the knee in a slow and rhythmic motion without activating the leg muscles. This improves circulation thus lubricating the affected joint. Extra fluid that has built up is moved away and regeneration of cartilage encouraged.
  • This physical therapy equipment is designed to accommodate all patients of age eight to 80 without requiring additional accessories. The machine is exceptionally easy to carry and offers a quick a set-up.

Shoulder CPM

If you are looking for comfort therapy for the shoulder then Patient Kit for Artromot S3 from Chattanooga is popular for its deep pile sheepskin and durable fleece with items for both upper and lower arm of the unit.

Hand CPM/Wrist CPM

The Kinetec Maestra Hand and Wrist CPM Machine is an effective CPM machine for the hand and wrist and a popular buy for its lightweight and portability features. It has variable speed control and range of motion plus a pivoting palm support for increased comfort.

Ankle CPM

The Breva Ankle CPM machine from Kinetec USA is designed for the ankle and offers two possible dimensional movements - Plantar flexion to Dorsiflexion and Eversion to Inversion patterns. It is a quiet machine and provides the flexibility of being used lying in bed or sitting up in a chair. These CPM machines are a cost-effective way of overcoming joint stiffness and related complications post-surgery thus eliminating prolonged physiotherapy or hospital visits.