Dysplasia surgery recovery: FHO, arthroscopy and THR

EMReviewed by Eben Martin, Veterinary Surgeon · Updated August 2026

The three common surgeries recover differently: arthroscopy is days to a fortnight of restraint; FHO is unusual in that early movement is the medicine, with function building over six to eight weeks; THR demands six weeks of guarded confinement while the implant integrates, then a staged return over three months.

Surgery and stageThe regimeThe point
Arthroscopy1 to 2 weeks restrictedSmall wounds heal fast; the joint disease still needs its long term plan
FHO6 to 8 weeks building useMovement early and often; physio and hills build the muscle sling that becomes the joint
THR, weeks 1 to 6Guarded confinementOne bad slip can dislodge an implant; room confinement, leash toileting, floors covered
THR, weeks 6 to 12Staged rebuildX-rays confirm integration, then progressive leash work back to normal life

The two recoveries that fail, and why

FHO fails when dogs rest too much: without early use, scar tissue stiffens and muscle never builds, so the forgiving operation gets an unforgiving result. THR fails when confinement breaks: one flight of stairs on week two can turn a triumph into a revision. Same owner, opposite assignments. Make sure you know which one you have signed up for, in writing, before surgery day.

After THR, sudden lameness, a leg that looks rotated or shortened, or an audible clunk is an implant emergency: call the surgical centre immediately, do not wait for the recheck.

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Common questions

How soon after FHO should my dog use the leg?

Toe touching within days and genuine weight bearing within a couple of weeks is the healthy pattern. An FHO dog still carrying the leg at three weeks needs a physio review rather than more waiting; momentum is the whole game.

Is hydrotherapy worth it here?

For FHO and THR rebuilds it is one of the better spends in all of orthopaedics: muscle without impact. Most surgical centres will name the week to start; ask for it in the discharge plan.

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