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Cold Compression Therapy and Your Physical Therapy Plan

There is no single, standard cold compression protocol for physical therapy after surgery. What the research does support is narrower: start cold therapy early after surgery, use it for pain in the first days, and, per expert consensus, apply it for about 10 to 15 minutes after each rehab session.[1][2] Everything beyond that (session length, temperature, compression level, how many weeks) is set by your surgeon and physical therapist for your procedure. The most useful thing a patient can have is one plan that everyone agrees on.

This guide covers what the published evidence says, where it runs out, and how patients, therapists, and suppliers keep the plan consistent at home.

What the evidence actually says about timing and dose

Most of the research comes from knee replacement, so that’s where the clearest guidance sits.

  • The physical therapy guideline. The American Physical Therapy Association’s clinical practice guideline for total knee replacement says: “Physical therapists should teach and encourage use of cryotherapy for early postoperative pain management.” It rates the evidence quality as high and the recommendation strength as moderate.[1-1]
  • No fixed schedule. The same guideline is direct about the limits: “There was not sufficient evidence to provide a prescriptive time frame for the application after surgery,” and there was “insufficient evidence to identify how many days postsurgery cryotherapy should be continued.”[1-2]
  • Around rehab sessions. A 2025 scoping review of cryotherapy parameters after knee replacement reports that “expert consensus further recommends administering cryotherapy for 10-15 min after each rehabilitation session,” and that starting “immediately after surgery” is increasingly recommended.[2-1]
  • Early days matter most for pain. A 2024 meta-analysis found cryotherapy groups had “significantly lower VAS scores than no cryotherapy group on postoperative day (POD) 1,” with similar differences on days 2 and 3.[3]
  • The honest caveat. The same scoping review concludes “there is no standard in its parameters,” and a 2023 Cochrane review of 22 trials (1,839 participants) rated the certainty of evidence as low for pain and range of motion.[2-2][4]

So the evidence points to a reasonable default (early, after sessions, focused on the first days) and leaves the specifics to the clinician. That is why your plan should come from your care team, not from a forum post or a neighbor’s recovery.

Why your plan won’t match someone else’s

Two patients with the same surgery can get different instructions, and both can be right. The variables your team weighs include:

  • The procedure and the surgeon’s post-op restrictions
  • Your skin, circulation, and sensation (the APTA guideline notes appropriate use includes making sure the patient has intact sensation, because of the risk of skin irritation and cold injury)[1-3]
  • Where you are in rehab and what your therapist is working on that week
  • The specific device and wrap you’ve been prescribed

If you have a cold compression unit at home, the device instructions and your clinician’s instructions govern. Settings from another patient or another machine don’t carry over.

Who owns which part of the plan

A patient can leave surgery holding three sets of directions: the surgeon’s discharge instructions, the therapist’s rehab plan, and the supplier’s device walkthrough. They do different jobs, and they shouldn’t be blended into one improvised routine.

Responsibility Who owns it What it does not decide
Whether cold and compression fit your recovery, and precautions Surgeon / treating clinician Not set by a supplier or a rental term
Rehab goals, session timing, changes as you progress Physical therapist, with the surgeon Not set by the equipment
How the device operates, fitting, troubleshooting Supplier or manufacturer support Does not replace medical guidance
Rental, return, and extension logistics Supplier rental contact Does not set how long treatment continues

The last row trips people up most. The rental calendar and the clinical calendar are two different things. When a rental ends doesn’t tell you whether you should keep using cold therapy, and how long you should use it doesn’t depend on the rental agreement.

Setting up one plan at home

Before you leave the surgery center or first PT visit:

  1. Ask whether cold therapy, compression, or both are part of your plan, and for which body area.
  2. Write down who answers clinical questions (usually the surgeon’s office or your PT) and who answers equipment questions.
  3. Confirm the device and wrap you’ve been prescribed match the area being treated.

Once the unit arrives:

  1. Learn the device from the supplier. With a WRS Group Game Ready rental, once your unit arrives we walk you through the fitting on a call, so you’re not handed a manual and left to figure it out.
  2. Bring your clinician’s instructions to the setup call so the operation matches the plan.
  3. Pick the person (you or a caregiver) who will handle setup, the rental, and the return.

As rehab progresses:

  1. If your therapist or surgeon changes the plan, ask who issues the updated instructions and put a date on them.
  2. Ask whether the change affects the equipment (different wrap, longer rental).
  3. Tell the supplier about equipment changes. Don’t ask the supplier to approve a clinical decision.

When something feels off

Your instructions conflict. Ask the treating team which one is current before changing anything. Don’t average two schedules or go with the easier one.

Your rental is ending before your next follow-up. That’s two separate conversations: ask your clinician whether continued use makes sense, then talk to the supplier about an extension.

Your symptoms change. Stop using the device and contact your surgeon or therapist if you notice increased pain, new swelling, skin irritation, or numbness during treatment. Follow the device’s safety instructions.

Setup is too much to manage alone. Raise it with your care team and the supplier. A caregiver may need to be part of the setup call.

Where Game Ready and WRS Group fit

Game Ready is a cold compression therapy system, cold and active compression together. Per its labeling, “Game Ready is intended to treat post-surgical and acute injuries to reduce pain, edema, and swelling, where cold and compression are indicated.”

It’s a prescription device. If your surgeon recommends it, we help coordinate the prescription with your surgeon’s office (how that works). WRS Group handles the rental, the fitting walkthrough, and patient support. Your clinicians direct the treatment. For practices, that’s the split we aim for: equipment support that follows the clinical plan, never the other way around.

If your surgeon prescribes cold compression for your recovery, here’s how Game Ready rental through WRS Group works, including help coordinating the prescription with your surgeon’s office.

Related guides

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Frequently asked questions

Is there a standard cold compression protocol for physical therapy?
No. The APTA knee replacement guideline found “not sufficient evidence to provide a prescriptive time frame,” and a 2025 review found “no standard” for cryotherapy parameters.[1-4][2-3] Your surgeon and therapist set yours.
Should I use cold therapy before or after physical therapy?
The published expert consensus favors after: “10-15 min after each rehabilitation session.”[2-4] Your therapist may adjust that for your procedure, so follow their instructions.
How soon after surgery does cold therapy start?
Research increasingly recommends starting “immediately after surgery,” and the clearest pain benefit shows up in the first three days.[2-5][3-1] Your surgical team decides when you start.
How many weeks should I keep using it?
There isn’t an evidence-based answer. The APTA guideline found “insufficient evidence to identify how many days postsurgery cryotherapy should be continued.”[1-5] Ask your clinician at each follow-up.
Can cold compression replace physical therapy?
No. It’s a tool your care team may use alongside rehab, not a substitute for the exercise and progression your therapist builds.
Who sets the temperature and compression settings?
Your treating team, working from the device instructions. The supplier can show you how the controls work. Choosing the settings is a clinical decision.
Do I need a prescription for a cold compression machine?
Yes. Cold compression therapy devices like Game Ready require a prescription. We help coordinate it with your surgeon’s office.

References

  1. Jette DU, Hunter SJ, Burkett L, et al. Physical Therapist Management of Total Knee Arthroplasty. Physical Therapy. 2020;100(9):1603-1631. DOI: 10.1093/ptj/pzaa099. PMID: 32542403. PMCID: PMC7462050. https://pmc.ncbi.nlm.nih.gov/articles/PMC7462050/↩︎↩︎↩︎↩︎↩︎↩︎
  2. Yang L, Zhan YF, Zhai ZJ, Ruan H, Li HW. Mechanisms and parameters of cryotherapy intervention for early postoperative swelling following total knee arthroplasty: A scoping review. Journal of Experimental Orthopaedics. 2025;12(1):e70197. PMID: 40059958. PMCID: PMC11888574. https://pmc.ncbi.nlm.nih.gov/articles/PMC11888574/↩︎↩︎↩︎↩︎↩︎↩︎
  3. Liang Z, Ding Z, Wang D, et al. Cryotherapy for Rehabilitation After Total Knee Arthroplasty: A Comprehensive Systematic Review and Meta-Analysis. Orthopaedic Surgery. 2024;16(12):2897-2915. DOI: 10.1111/os.14266. PMID: 39402654.↩︎↩︎
  4. Aggarwal A, Adie S, Harris IA, Naylor J. Cryotherapy following total knee replacement. Cochrane Database of Systematic Reviews. 2023, Issue 9. Art. No.: CD007911. DOI: 10.1002/14651858.CD007911.pub3. https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD007911.pub3/full↩︎

Questions about cold therapy and your PT plan?

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