At a Glance
- A continuous passive motion (CPM) machine should be used only when the surgeon or physiotherapist has recommended it and given a specific recovery plan.
- Compare the exact equipment, setup and service scope before you rent or buy.
- Follow the treating clinician’s instructions for patient care, settings and transfers.
Reading time: 6 min | Category: Home Care Equipment | Published by Sanjeevia Medical
Quick Answer
A continuous passive motion (CPM) machine should be used only when the surgeon or physiotherapist has recommended it and given a specific recovery plan.
After knee surgery, families may be told to arrange a CPM machine before discharge. The crucial questions are not only whether it is available, but what range, timing and duration the surgeon or physiotherapist has prescribed and who will show the family the setup.

Start with the Right Decision
A CPM machine moves the knee through a prescribed passive range. It does not replace physiotherapy, walking guidance, pain management or clinical follow-up. Settings should follow the treating team’s plan; families should not increase range or duration simply to make recovery feel faster.
What to confirm before booking
- the surgeon or physiotherapist’s written CPM plan
- the machine’s fit to the patient and how it will be positioned safely
- who will demonstrate setup, straps and basic operation
- rental duration, support contact and the plan if pain or swelling changes

Should You Rent or Buy?
CPM use, when prescribed, is commonly time-limited in the early recovery period, which can make rental practical. The rental term should reflect the surgeon’s plan and follow-up schedule rather than a generic online timeline.
A Practical Booking Checklist
- Keep the prescription, discharge instructions or therapist recommendation ready where equipment is clinically prescribed.
- Ask for the exact model and included accessories in writing.
- Confirm the delivery route, room setup, handover and service contact before the booking is finalised.
- Ask about the current rental period, extension process, collection terms and purchase option where relevant.
Information to Take from the Care Team
Ask the surgeon or physiotherapist to write down the starting and maximum permitted knee angle, session length, sessions per day, progression plan and conditions for stopping. “Use a CPM machine” is not enough information for safe home use. The provider can demonstrate operation and fit, but only the clinical team should prescribe or change the recovery plan.
- Stop if pain increases sharply beyond the expected plan.
- Contact the team if swelling, warmth, redness or wound drainage worsens.
- Recheck setup if the leg shifts or straps do not fit as demonstrated.
- Do not increase range or duration without clinical instruction.
Frequently Asked Questions
Does every knee-replacement patient need a CPM machine?
No. CPM use is surgeon- and patient-specific. Ask the orthopaedic team whether it is appropriate and what exact routine applies.
Can we increase the CPM range at home?
Only follow the range and progression set by the surgeon or physiotherapist. Contact the care team if pain, swelling or the recovery plan changes.
Discuss the right option for your home-care plan: CPM Machine | knee-replacement home-care guide | contact Sanjeevia for current availability and delivery details in Delhi NCR.
How to Compare Quotes and Support
Compare CPM rentals by machine availability, fit support, delivery demonstration, rental term, service contact and collection process. The provider can explain the controls; the prescribed range and progression must come from the surgeon or physiotherapist.
When to Involve the Care Team
Contact the care team if pain, swelling, wound concerns or the planned range changes. Do not advance the machine’s settings on your own.
- Place the machine on a stable, clear surface.
- Use straps and positioning as demonstrated.
- Coordinate CPM timing with the physiotherapy plan.
Medical Disclaimer
This article is for general informational purposes only and is not medical advice. Equipment selection, settings, patient positioning and transfer decisions must follow the treating clinician’s instructions.
Published by Sanjeevia Medical | sanjeevia.com | Delhi NCR
Related Guidance and Equipment
CPM use should follow the surgeon or physiotherapist’s recovery plan; these links connect the rehabilitation decision with the exact equipment.
Continue Reading
- Home Care After Hip or Knee Replacement — prepare mobility, transfers and recovery equipment.
- Renting vs Buying Medical Equipment — compare short-term rental with long-term purchase.
Relevant Product Pages
- CPM Machine — review the CPM product only when prescribed for rehabilitation.
- Walker / Zimmer Frame — review a walking aid when recommended by the physiotherapist.