Knee rehabilitation generally progresses from managing pain and swelling toward restoring strength and movement control, and finally toward the higher loads required for sport or demanding occupational tasks.
Timelines vary considerably depending on the specific condition, with overuse-related pain typically following a faster course than a significant ligament or meniscus injury.
Load across phases
Phases
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1
Pain and swelling management
0–2 weeksActivity modification, gentle range-of-motion work, and swelling management aim to calm acute symptoms.
Load 20%
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2
Mobility and activation
2–4 weeksRestoring comfortable range of motion and reactivating the quadriceps and hip muscles becomes the primary focus.
Load 40%
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3
Progressive strengthening
4–10 weeksResistance exercises targeting the quadriceps, hamstrings, and hip muscles progressively increase to rebuild functional strength.
Load 65%
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4
Return to full or sport-specific activity
10–16+ weeksHigher-load, plyometric, and sport-specific movements are reintroduced before an unrestricted return to demanding activity.
Load 90%
Significant ligament injuries, meniscus repairs, or joint replacement follow separate, more structured post-surgical timelines that typically extend well beyond this general pattern.
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