For athletes and active patients recovering from ACL reconstruction with Dr. Shayne Kelly, DO at Tri-City Orthopedics — what each phase looks like, the milestones that matter, and how return-to-play decisions actually get made.
Educational information, not medical advice. This is not a substitute for the specific instructions Dr. Kelly and your physical therapist give you. Your timeline depends on your surgery, your body, and your progress. Follow your own care team's directions. In an emergency, call 911.
The short version
Most athletes return to their sport somewhere around 9 to 12 months after ACL reconstruction. But the date on the calendar is not what clears you — recovery is criteria-based, not calendar-based. You move to the next phase when your knee earns it: full motion, quiet swelling, strength that measures up against your other leg, and movement quality that holds up under fatigue.
The phases below are typical ranges, not promises. Dr. Kelly adjusts the plan for your graft type, any meniscus or cartilage work done at the same time, your sport, and how your knee responds. Your own protocol — the one your care team gives you — always wins.
Phase-by-phase: what recovery actually looks like
Tap each phase to expand it. You advance when you hit the milestones — not when the calendar says so.
Phase 0 · Prehab (before surgery)
Goals
Calm the knee down: minimal swelling, full extension
Wake the quad up before surgery, not after
Know the post-op plan so week one is not a surprise
Milestones to hit
Extension equal to your other knee
Walking without a limp
Strong, visible quad contraction
Sample PT-guided work
Quad sets, straight-leg raises, heel slides
Stationary bike as tolerated
Precautions
Avoid cutting, pivoting, and unstable surfaces — protect the meniscus and cartilage until surgery
Phase 1 · Weeks 0–2 — Protect & activate
Goals
Protect the graft while it is at its most vulnerable
Full extension early — it is much harder to win back later
Control swelling; get the quad firing again
Milestones to hit
Full passive extension equal to the other side
Quad set with a visible superior patellar glide
Swelling trending down day over day
Sample PT-guided work
Quad sets, ankle pumps, heel props for extension
Heel slides for early flexion; patellar mobilizations
Weight-bearing and brace use exactly as your protocol directs
Precautions
If a meniscus repair was done at the same time, weight-bearing and flexion limits are usually stricter — follow your specific protocol
No pushing through sharp pain to chase flexion numbers
Phase 2 · Weeks 2–6 — Motion & gait
Goals
Flexion progressing toward roughly 120°+
Normal walking pattern — wean crutches and brace per protocol
Keep extension full while flexion builds
Milestones to hit
Walking without a limp on level ground
Straight-leg raise with no lag
Minimal swelling after daily activity
Sample PT-guided work
Stationary bike (rocking to full revolutions as motion allows)
Mini squats, weight shifts, balance work
Gait drills; step-ups as tolerated
Precautions
No running, jumping, or twisting — the graft is remodeling and is not ready
Phase 3 · Weeks 6–12 — Strength foundation
Goals
Rebuild real strength — quad, hamstring, glutes, calf
Single-leg control without the knee caving inward
Full, comfortable range of motion
Milestones to hit
Full flexion and extension
Single-leg squat to depth with good alignment
Stairs up and down without pain or compensation
Sample PT-guided work
Leg press, squats, lunges, hamstring work — progressively loaded
Single-leg balance and stability drills
Bike and elliptical for conditioning
Precautions
Still no running or cutting — strength has to come before impact
Phase 4 · Months 3–6 — Running & agility
Goals
Return to straight-line jogging — only after strength criteria are met, typically somewhere after the 3–4 month mark
Reactive agility — responding to cues, not just cones
Sport drills built with your PT and coach
Precautions
Feeling good at month 6 is normal — and is not the same as being ready. Re-injury risk is highest in the first year back
Phase 6 · Months 9–12 — Return-to-play testing
Goals
Pass an objective return-to-play battery — not just feel ready, measure ready
Full practice before full competition
What testing typically includes
Quad and hamstring strength at 90%+ of the uninvolved leg
Hop test battery (single, triple, crossover, timed) at 90%+ symmetry
Movement quality under fatigue — landing, cutting, deceleration
Confidence: hesitation on the field is its own risk factor
Precautions
Most athletes return around 9–12 months. Earlier return is an individualized decision made with Dr. Kelly based on your testing, your sport, and your graft — not a default
Graft type matters early. Patellar tendon (BPTB), quadriceps tendon, and hamstring grafts each have different early precautions and soreness patterns, and a meniscus or cartilage repair done at the same time usually slows the early phases. The end goal and testing standards stay the same. Dr. Kelly sets your specifics at your post-op visits.
When to call the office — do not wait
Call Tri-City Orthopedics at (509) 460-5588 right away if you notice any of these:
Signs of infection: fever over 101°F, spreading redness, warmth, or drainage from the incision
Possible blood clot: calf pain or tenderness, new swelling in the leg — and call 911 for chest pain or trouble breathing
The knee locking, catching, or giving way
Pain or swelling that is getting worse instead of better, or numbness that does not resolve
In an emergency, call 911 first.
Take this guide with you
Print this guide or scan to reopen it on your phone. Dr. Kelly can hand this page to you in clinic — the QR code brings you right back here.
Many patients wean off crutches within about 1–3 weeks, once they can walk without a limp and the quad is firing well. If a meniscus repair was done at the same time, protected weight-bearing usually lasts longer. Your protocol sets the pace.
When can I run again after ACL surgery?
Straight-line jogging typically starts somewhere after the 3–4 month mark — but only after you meet strength criteria, usually around 70% or better quad symmetry. Starting the clock is about what your leg can do, not what week it is.
Why wait 9–12 months if my knee feels great at 6?
Because the graft is still maturing and re-injury risk is highest in the first year back — especially in young athletes. Feeling good is one criterion. Measuring 90%+ on strength and hop testing under fatigue is the rest.
What does return-to-play testing actually involve?
An objective battery: quad and hamstring strength compared to your other leg, a hop test series (single, triple, crossover, timed), movement quality under fatigue, and honest conversation about confidence. Dr. Kelly clears athletes based on the numbers and the sport — not the calendar.
Does my graft type change the recovery?
The early weeks differ — patellar tendon grafts tend to have more kneeling soreness, quad tendon grafts need focused quad rebuilding, hamstring grafts need hamstring protection early. The testing standards at the end are the same. Dr. Kelly individualizes graft choice and the plan to your age, sport, anatomy, and goals.
Questions about your recovery?
Schedule a follow-up with Dr. Kelly at Tri-City Orthopedics.
