Knee Injury Recovery: ACL, Meniscus and Patellofemoral Pain
Diagnosis-specific recovery arcs and the milestones that signal you're on track.
10 min read
The three most common PT knee referrals — ACL reconstruction, meniscal injury, and patellofemoral pain — have very different recovery arcs and require diagnosis-specific plans.
ACL reconstruction recovery runs six to nine months for return to cutting and pivoting sport. The first six weeks protect the graft; months 2–4 build strength; months 4–6 add running and plyometrics; months 6+ work toward return to sport.
Meniscal injury recovery depends on tear pattern and whether the surgical approach was repair or partial meniscectomy. Repair requires weeks of restricted weight-bearing; partial meniscectomy is faster but accelerates long-term arthritis risk.
Patellofemoral pain rarely needs surgery. PT focuses on hip and quadriceps strength, motor control, and load management. Improvement timelines run weeks to months.
Objective return-to-activity testing — single-leg hop tests, isokinetic quadriceps strength, Y-balance — outperforms time-based or pain-based decisions for return to sport.