“Continuous Passive Motion” (CPM) for Joint Healing, Effective? How?


How does a continuous passive motion machine work?

Continuous passive motion (CPM) is a therapy in which a machine is used to move a joint without the patient having to exert any effort. A motorized device gently bends the joint back and forth to a set number of degrees, and the amount of movement and speed can be adjusted by the physical therapist.

How effective are CPM machines?

CPM users reported an average function score of 56 out of 100 (with higher numbers indicating better function). The average function score was 57.6 points for non-CPM users. Lastly, patients using CPM reported a quality of life score of 41 out of 100 (with higher numbers indicating a higher quality of life).

Why is continuous passive motion used?

A CPM is used after surgery to help pump fluid away from the joint. It reduces blood and fluid build-up in and around joints. It also aids in returning motion to the joint. Failure to achieve full motion shortly after surgery may allow scar tissue to form.

How long should I use CPM machine?

A CPM may help prevent stiffness, pain and development of adhesions within the joint. How long do I use the machine? You will use the machine for approximately 2 weeks, sometimes longer if you are on crutches for an extended period of time. You will use the machine between 2-‐4 hours/day.

How long does it take for knee stiffness to go away after knee replacement?

Your range of motion may continue to improve for up to two years after your surgery. You can expect to use a variety of stretches and exercises in order to achieve optimal motion with your replaced knee.

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How do you use a CPM machine after knee replacement?

Quote from the video:
When you have injured a part of your body it's recommended that you elevate the injury to help reduce the swelling. When you place a patient's leg in a CPM.

Can you sleep in a CPM machine?

Use the CPM device as frequently as possible per physician’s instructions during the day and, if convenient, while sleeping. The CPM device’s settings should only be adjusted in accordance with the instructions provided by the doctor, therapist or provider.

How long does it take to get full range of motion after knee replacement?

Most of your improvement after a knee replacement will take time. However, the one thing that you must feel some urgency to accomplish is getting good range of motion of your knee (flexibility). Within 7 to 10 days after your knee replacement, you should be able to get your knee entirely straight/full extension (Fig.

Does the X10 therapy work?

Use of the X10 dramatically speeds up recovery from knee replacement by many months with dramatically less pain than with traditional physical therapy.

Does CPM hurt?

You may have less pain.



A CPM machine will elevate your leg or arm and decrease swelling. You may have less pain if your swelling is decreased.

What is the fastest way to recover from a knee replacement?

4 Tips for Faster Recovery after Knee Surgery

  1. Keep the Knee Straight. While it may not be incredibly comfortable, it’s important that you keep your knee joint completely straight immediately after your surgery. …
  2. Wear Your Knee Brace. …
  3. Appropriate Exercise. …
  4. Physical Therapy.
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How many degrees should you be able to bend your knee?

A fully bent knee will max out at about a full range of motion of 135° degrees of flexion. As a general rule, a knee flexion of about 125° will allow you to carry out most normal activities. For daily living, a minimum flexion of around 105°-110° is required.

How do you break up scar tissue in your knee without surgery?

This often includes:

  1. Gentle physical exercise like walking on a treadmill.
  2. Wearing a compression brace to keep the joint in place and provide extra support.
  3. Using a continuous passive motion machine (CPM) to move your knee through a specific range of motion.


How do I get a full range of motion in my knee?

Wall Slides

  1. Place a towel under your heel.
  2. Lay on your back with both legs up a wall or closed door.
  3. Slowly bend the operated knee so that your heel slides down into a stretch.
  4. Hold stretch for a deep breath.
  5. Actively return the operated leg to the original position.
  6. Repeat for 1-2 sets of 10-15 reps multiple times a day.


What happens at 7 months after knee replacement?

It’s normal for patients to experience some degree of pain up to six months after surgery. But if pain persists past six months after the procedure, it’s generally considered to be long-term, or chronic, pain. Several studies have looked at the frequency of chronic pain among total knee replacement patients.

Why does my knee still hurt 6 months after knee replacement?

A: Recovery from surgery can take several months, so it’s not unusual to still have soreness in the knee that was replaced. As the intensity of rehabilitation exercises increases, more strain is put on the muscles and joints that have not been used in a period of time.

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Can you walk too much after knee replacement surgery?

It is important to gradually increase your out-of-home activity during the first few weeks after surgery. If you do too much activity, your knee may become more swollen and painful.

What happens at 3 weeks after knee replacement?

By week 3. By the time you’re back home or in a rehab facility, you should be able to move around more freely while experiencing reduced pain. You’ll require fewer and less powerful pain medications. Your daily routine will include exercise your PT has given you.

Should I still have pain 5 weeks after knee replacement surgery?

General pain may occur for up to several weeks following a total knee replacement. Swelling typically lasts for 2 to 3 weeks after surgery, but may persist for as long as 3 to 6 months.