Range of motion work keeps a joint moving while the cat will not move it itself. The dose that works is small: 1 session a day, 3 joints, 10 slow reps each, a 10-second hold at the end of every rep. That is 30 reps and 5 to 8 minutes of hands-on time, and it is enough to hold a joint through 4 to 6 weeks of cage rest.
What it does not do is build muscle or speed healing. It maintains the arc the joint already has, keeps synovial fluid moving across cartilage that has no blood supply of its own, and stops the capsule from tightening into a contracture that no amount of later exercise will undo.
The 3 joints and their angles
Work the joints the surgery actually crossed, on the operated limb only. After a hind-limb procedure that is hip, stifle and hock; after a forelimb procedure, shoulder, elbow and carpus. Three joints per session, no more, because a fourth is where owners get sloppy and push.
| Joint | Normal flexion | Normal extension | Cap for week 1-2 | Reps per session | Hold |
|---|---|---|---|---|---|
| Hip | 45-50 degrees | 165-170 degrees | Flex to 55, extend to 150 | 10 | 10 seconds |
| Stifle | 40-45 degrees | 145-155 degrees | Flex to 50, extend to 135 | 10 | 10 seconds |
| Hock | 40-45 degrees | 160-170 degrees | Flex to 50, extend to 145 | 10 | 10 seconds |
| Shoulder | 50-60 degrees | 160-170 degrees | Flex to 65, extend to 145 | 10 | 10 seconds |
| Elbow | 30-40 degrees | 140-150 degrees | Flex to 45, extend to 130 | 10 | 10 seconds |
| Carpus | 20-30 degrees | 190-200 degrees | Flex to 35, extend to 170 | 10 | 10 seconds |
The cap column is the working limit for the first 2 weeks, roughly 15 degrees short of normal on each end. Week 3 onward you add 5 degrees per week only if the previous week ended with no swelling, no heat and the same range on both ends. A cat that reaches 150 degrees of hip extension by week 4 is on schedule; one that is still at 130 needs the therapist, not a harder push.
One rep, in seconds
Take 3 seconds to move the joint to the endpoint, hold 10 seconds with light steady pressure, then 3 seconds back. That is 16 seconds per rep, so 10 reps is 2 minutes 40 seconds per joint and 8 minutes for 3 joints including the changeovers. Do not count reps out loud at speed; count the seconds instead. Ten fast reps that take 40 seconds total do nothing except irritate the capsule.
Flexion first, then extension, alternating: 1 flex rep, 1 extend rep, and so on. Alternating keeps the fluid moving and gives each direction 10 seconds of recovery. Never bounce at the end range. A bounce is a stretch reflex, and the reflex tightens the muscle you were trying to lengthen.
Finding the stop point
Slide your thumb and index finger on either side of the joint, close to the bone, not on the muscle belly. Move the limb slowly until you feel the first resistance; that is the true end range. Go 5 degrees past it, no more, and hold. If the cat tenses before you reach the angle that was easy yesterday, you have found today's limit, and today's limit is the one that counts.
Two factors change the number from day to day: swelling, which can cost 10 to 15 degrees overnight, and pain, which shows up as a cat that holds its breath or pulls the limb away at 80 percent of yesterday's range. Both mean hold the angle, not push through it.
Warm the tissue for 3 minutes
A warm pack at 38 to 39 C, wrapped in a towel, laid over the joint for 3 minutes before the first rep loosens the tissue and makes the endpoint easier to feel. Never above 40 C, never directly on skin, never on an incision that is less than 72 hours old or still draining. After the session, 3 minutes of the same pack again, or nothing at all; cold is for swelling in the first 48 hours, not for routine stretching.
Track 3 numbers, not a feeling
Measure the arc with a goniometer or, if you do not have one, photograph the limb against a printed protractor at day 0, 14, 28 and 42. Write down 3 numbers per joint: flexion, extension, and the cat's reaction scored 0 to 3, where 0 is relaxed and 3 is a bite. A gain of 10 to 15 degrees over 2 weeks is normal. A loss of 10 degrees, or a jump from 0 to 2 on reaction, is a call to the clinic.
Owners usually overestimate progress, which is why the numbers matter. The photo taken at day 0 is the only honest baseline you will ever have.
Signs that mean stop
Stop the session and call the clinic for any of these: the cat vocalizes or bites at a range that was easy 2 days ago; the joint is hotter than the opposite side by touch; swelling adds 1 cm or more at the joint; the limb trembles or the cat holds its breath at the endpoint; the incision opens or drains; the cat refuses to use the limb for more than 12 hours after a session. Pain that needs more than 24 hours to settle means the next session was too hard, and the one after that should start 10 degrees short of today's endpoint.
Clear the angles first
Every angle in the table is a population average, not a target for this cat. Get the surgeon or a rehab therapist to write the actual flexion and extension caps for this joint at the day 10 to 14 recheck, and to show you the endpoint on the cat once with your hands on theirs. A cat with a repaired Achilles, a cat with an FHO and a cat after a plate on the femur have 3 different safe arcs, and 1 number copied from a chart can set a 6-week recovery back. A therapist visit runs 60 to 120 USD, so 4 visits across 6 weeks adds 240 to 480 USD to the surgical bill; the wider budget is in the cat cost calculator.
Six steps tonight
- Warm pack for 3 minutes, towel between pack and skin.
- Move 3 joints only, 10 reps each, 3 seconds out and 3 seconds back.
- Hold every rep 10 seconds at 5 degrees past first resistance.
- Alternate flexion and extension, no bouncing.
- Photograph the arc and score the reaction 0 to 3.
- Repeat once daily for 6 weeks, and skip the day after any stiff one.
One session a day, 30 reps, 8 minutes, 42 days. If the cat's water intake drops while it is on cage rest, the bowl position matters more than the bowl type; the fountain versus bowl comparison covers the 3 placements that get a reluctant cat drinking.
Frequently asked
How often should range of motion be done on a cat?
Once a day is the standard dose for a cat on cage rest: 3 joints, 10 slow reps per joint, a 10-second hold at each endpoint, which totals 30 reps and 5 to 8 minutes. Twice a day adds irritation rather than range in most post-operative cats, and a stiff day should be skipped rather than doubled.
How far should I push a joint before stopping?
Go to the first point of resistance, add 5 degrees, and hold there. In the first 2 weeks the working limit is about 15 degrees short of normal at each end, so a stifle stops near 135 degrees of extension rather than 150. Never bounce at the endpoint and never force past a limit the surgeon wrote down.
When is range of motion unsafe after surgery?
Skip it while the incision is less than 72 hours old, still draining, or visibly open, and stop immediately for new swelling above 1 cm, heat at the joint, vocalizing at a previously easy angle, or a limb the cat will not use for 12 hours. Any of those needs a call to the clinic before the next session.