PROTECT. ELEVATE.
straighten.

The first week is not about progress. It's about protection — letting the knee settle, keeping the wound clean, and doing a small number of unglamorous things that published protocols treat as the foundation for everything after.

What this week is actually for

Published protocols, including the Cambridge University Hospitals rehab guidance and OrthoInfo's ACL overview, typically emphasise four things in the first days:

• Swelling control. Elevation (ankle above heart, not just "on a stool"), ice as your team directed, and not overdoing time on your feet. Swelling is the main brake on everything else — it inhibits the quadriceps and limits motion.
• Full extension. Getting the knee completely straight is the milestone protocols guard most jealously in the early weeks. Bend tends to come back; a knee that heals short of straight is much harder to fix later.
• Waking the quadriceps. The quad switches off after knee surgery. Early activation work — if and as your protocol prescribes it — is about reminding the muscle it exists, not building strength.
• Wound care. Keep it clean and dry per your discharge instructions. Boring, and non-negotiable.

What it tends to feel like

Day one runs on the hospital's pain management. Days two to four are usually the trough — the nerve block is gone, the knee is at its most swollen, sleep is broken, and the mood dips with it. A low point around day three is common enough that it's worth expecting, so it doesn't read as failure when it arrives. Pain that is gradually easing across the week — even with bad hours inside it — is the pattern the NHS describes as the normal one.

Sleep logistics help more than people expect: pillow under the calf (not behind the knee, if your protocol says to protect extension), pain relief timed as prescribed rather than heroically skipped, and the acceptance that this week's sleep is triage.

Crutches, and where you'll actually live

Whatever your weight-bearing status, the practical unit of week one is the lap: bed to bathroom to couch. Set the house up for it once — charger, water, meds, laptop within reach of the couch — instead of negotiating stairs eight times a day.

Worth asking your physio this week

• "What weight-bearing am I actually allowed — and does it change before my first review?"
• "Which of my exercises matter most if I can only do some?"
• "What should my knee be able to do by the first appointment?"

Write the answers down. Week-one brain retains nothing.

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Next: Week 2 — the review, the extension battle · Back to: the full ACL recovery timeline

Sources: NHS — Recovering from ACL surgery · Cambridge University Hospitals — ACL reconstruction rehabilitation · OrthoInfo (AAOS) — ACL injuries