By Ben Harris, DPT · Originally published May 30, 2023. Revised for republication October 26, 2026.
The first question after ACL surgery is often simple: what should I be doing right now? Recovery involves more than waiting for the knee to heal. It takes a plan for movement, strength, daily activities, and eventually the demands you want to return to.
This overview focuses on ACL reconstruction. Your surgeon’s instructions take priority, especially if you also had a meniscus repair or another procedure.
The first days: know your instructions
ACL reconstruction is commonly an outpatient procedure, so many patients go home the same day. Before leaving, make sure you understand wound care, medications, follow-up appointments, and who to contact with concerns.
Ask exactly how much weight you may put through the leg, whether you need a brace, and how to use your crutches. Those instructions vary. A friend’s recovery schedule is not a substitute for your own.
Early rehabilitation: motion and muscle control
Early PT commonly addresses swelling, knee motion, and quadriceps activation. Straightening the knee is an important goal. Your therapist will explain how to work toward it while protecting the surgical repair and respecting any additional restrictions.
Use ice, compression, elevation, and medications only as directed by your team. Protect your skin when using cold therapy. More exercise is not automatically better; report a clear increase in swelling or loss of motion rather than trying to push through it.
Progress is measured in milestones
Rehabilitation gradually builds strength, balance, walking ability, and tolerance for everyday tasks. Later work may include running, jumping, landing, and changes of direction. Each activity requires a different level of capacity.
Ask your PT what you need to demonstrate before the next progression. A useful answer should include more than a week on the calendar: how your knee moves, how it responds to loading, and how well you control the movement all matter.
Returning to sport is a separate decision
Being able to walk comfortably does not mean the knee is ready for cutting or contact sport. Return to sport often takes many months and may take a year or longer. Clearance should consider strength, functional testing, confidence, healing, and the demands of the sport.
Know when to get help
Contact your surgical team promptly for fever, wound drainage, worsening redness, or pain that is not controlled as expected. New calf pain or swelling needs urgent assessment for a possible blood clot. Chest pain or shortness of breath after surgery requires emergency care.
Four questions for your next appointment
What are my current restrictions? What is the most important goal this week? What response to exercise should make me contact you? What needs to improve before I move to the next stage?
A clear answer to those questions is more useful than comparing your knee with someone else’s highlight reel.
Optional printable from my shop
Prefer a printable reference? My early-phase knee range-of-motion guide is available on Etsy. Use only exercises cleared by your surgical team; your procedure-specific restrictions take priority.
Sources and further reading
Hospital for Special Surgery: ACL surgery and recovery
NHS: Recovering from ACL surgery
NHS: Complications of ACL surgery
General education only. This article does not replace an individual assessment or the advice of your treating clinician.
Related reading: What patellar mobilizations can—and cannot—do after ACL surgery.
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