Steady Passive Movement Remedy (Do CPM Machines Paintings?)

(I would possibly earn a small fee from the goods discussed on this put up.)

Steady Passive Movement (CPM) is usually a treatment used as a part of restoration after knee substitute surgical procedure.

Even if I didn’t use one all through my restoration, I do know they are able to be a treasured element for other folks’s rehabilitation. I will be able to define the way it works explicit to the knee joint and speak about one of the professionals and cons of constant passive movement machines (or CPM machines).

This isn’t a treatment that you just will have to make a selection by yourself. The verdict to make use of a CPM device will have to be made by way of your surgeon or your bodily therapist.

There are options to CPM which come with bodily treatment and lively manipulation. I’ll proportion how I recovered and I’ll supply useful data in your restoration.

What Is A CPM Device?

A Steady Passive Movement Device is a post-surgical treatment this is used to transport the joint with out the affected person exerting any effort. The device is motorized and bends the knee joint from side to side.

Your therapist is in a position to regulate the device to a particular choice of levels and too can set the device on the desired velocity. CPM machines are maximum usually used on knee joints after surgical procedure however there are machines made for different joints too.

The device is in most cases used all through the preliminary therapeutic length, in an instant after knee substitute surgical procedure and the primary few days of restoration.

Goal of Steady Passive Movement Remedy

After knee substitute surgical procedure, your clinical workforce will need you to start out strolling and dealing in your vary of movement.

The CPM device assists in keeping your knee shifting proper after surgical procedure, while you’re nonetheless to your health facility mattress. The CPM device strikes the knee joint with out your lend a hand.

Some surgeons have really helpful CPM machines to stop scar tissue (learn the way I massaged my scar) from forming that can lead to stiffness. Scar tissue in and across the joint may prohibit your vary of movement.

Stiffness to your knee joint may cause headaches that can motive ache and result in a required “knee manipulation” underneath anesthesia by way of your surgeon.

How the CPM Device Works

The CPM device can paintings if you’re mendacity down or sitting up. You put your knee at the body of the CPM knee device.

Your foot suits right into a footpad this is adjustable. Your leg is secured by way of adjusting the straps (which might be hooked up to the device). The bodily therapist or your physician can regulate the velocity and attitude for the device.

The CPM device will also be adjusted to how a lot ache you’ll be able to tolerate. Ache is part of the restoration procedure, together with the CPM device. Drugs if prescribed will without a doubt lend a hand.

Execs and Cons of The usage of a CPM Device

As I’ve discussed in different articles, everybody has a unique enjoy with restoration. Whilst some clinical pros will counsel the use of a CPM device, others is also towards it.

All of it comes down on your explicit state of affairs and wishes. From my surgical procedure, I realized that motion of the joint in an instant used to be crucial for my restoration.


  • It should lend a hand the variety of movement to your knee building up.
  • Promotes blood circulate.
  • This is a passive movement and no effort is needed of the affected person.
  • Some sufferers with different well being problems would possibly now not have the ability to do the bodily workout important to rehab the knee the use of their very own effort.
  • There is usually a mental get advantages seeing your knee bending in an instant after TKR surgical procedure.
  • The CPM device elevates your leg which will lower swelling. This may additionally lend a hand ache led to from swelling.
  • It should lend a hand save you scar tissue from build up.


  • Many docs now not counsel CPM machines as a result of more recent analysis does now not reinforce their use. In line with my studying, research don’t display an important distinction in TKR sufferers the use of the CPM device. The research I learn point out that sufferers usually are on the similar level of restoration inside a number of weeks of surgical procedure without reference to using the CPM device. My physician didn’t suppose the CPM device used to be important for my post-surgery restoration. He prescribed lively bodily treatment from day one.
  • When sufferers depend at the device an excessive amount of it infrequently helps to keep them in mattress longer.
  • The device may not be relaxed and you will have bother drowsing or dozing when it’s in use.
  • Price will also be a subject matter. Maximum insurance coverage corporations pay for the in-hospital use of the CPM device. No longer all quilt the price of renting a CPM device to make use of at house. My analysis on the web signifies that almost all machines value over $2,000.00.
  • Medical doctors who don’t counsel the device like to have their sufferers up and specializing in lively treatment.

Choices for CPM (and an identical merchandise)

The Vinmax CPM device (click on to view on Amazon) is one in all a couple of choices to be had on Amazon. It makes use of a motor and virtual show to stay the knee joint shifting with out the assistance of your muscle tissue.


  • Adjustable straps
  • Adjustable attitude and velocity
  • Virtual show
  • Motor – self-moving

The person can alternate the perspective and velocity of the CPM to fit their wishes. One of the most cons of this piece of apparatus is the cost (it’s now not very inexpensive).

The Knee Go with the flow (view on Amazon) is another choice to stay the knee joint shifting. It’s not a standard CPM device as it calls for the person to manually transfer the lege (no motor).

Alternatively, it’s extra inexpensive and has excellent critiques. It’s moveable and can be utilized whilst seated or status. I actually like this selection in comparison to the motorized model discussed above.

Selection to a Steady Passive Movement Device

Maximum surgeons appear to choose that their TKR sufferers interact in lively bodily treatment in an instant after surgical procedure if their well being allows. For me, lively treatment began within the health facility about 4 hours after my surgical procedure.

A bodily therapist got here to my room and gave me easy workout routines that I may do in mattress and she or he inspired me to start out strolling with a hospital-provided walker.

To begin with, I began with easy ankle pumps and ankle rotations (those workout routines are simple and labored nice). I used to be inspired to stroll with the walker to and from the toilet.

On day two my therapist took me on a stroll down the corridor with the walker, and later returned for an extended stroll to her workout room the place she gave me a stair take a look at that I needed to do sooner than being discharged (learn extra about my post-surgery workout regimen).

As soon as at house, I used to be visited by way of a house bodily therapist thrice every week for a complete of 12 visits. She gave me a strenuous set of workout routines that I used to be to do thrice an afternoon.

It used to be a lot more straightforward doing the set together with her gazing and inspiring. Doing the workout routines alone took a great deal of strength of mind.

Every now and then the ache gave the impression insufferable however I made myself entire the workout routines. No longer simple! Fortunately, my extension returned with out a lot effort. The flexion used to be the true take a look at for me.

The 2 maximum useful and painful workout routines have been ankle slides’. The primary, mendacity flat on my mattress and pulling my ankle again in opposition to my butt the use of a gown belt to tug.

The second one maximum really helpful workout used to be sitting in a chair, sliding my leg as a long way again underneath the chair as I may the use of a plastic bag to slip at the tile ground. After 10 reps, I wrapped my excellent ankle across the entrance of my surgical leg and compelled it again so far as I may for any other 5 reps.

I did either one of those 2 workout routines thrice an afternoon, 3 units of 15 at the side of a number of different workout routines she prescribed. See my different articles for specifics.

The desk bound motorcycle within the gymnasium used to be any other useful gizmo for expanding my flexion. You’ll regulate the resistance and building up the time on every occasion you want. I like to trip a typical motorcycle however this is a excellent exchange till you’re feeling relaxed sufficient to get again at the highway.

I used to be additionally inspired to start out massaging my knee across the scar as shut as I may get the use of “Loose Up” lotion (learn my article about Loose Up and different drugs I used). As I healed, I endured to therapeutic massage all of the knee even the scar itself.

Once I used to be given the ok to resume swimming I used to be again within the pool. Flexing and bending the knee within the water used to be more straightforward with little resistance.

I additionally started the use of the hot-tub once I were given the k and the warmth and jets helped with flexion and bending.


Knee vary of movement (ROM), in addition to a discount in ache, is thought of as to be probably the most number one signs of a a hit TKR. 

Maximum surgeons have opted to not use CPM machines. As a substitute they prescribe lively bodily treatment for his or her sufferers. There may be slightly a little of study now supporting bodily treatment intervention for bettering knee vary of movement and serve as following TKR surgical procedure.

A CPM device could be suitable for sufferers who’ve underlying well being problems, particularly those that have bother strolling after surgical procedure. Keep in mind, everyone seems to be other. Seek the advice of your clinical workforce and bodily therapist to determine what’s right for you.

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