ACL rehabilitation follows one of the longest and most structured progressions covered on this site, generally spanning many months whether managed surgically or non-surgically.
Because graft maturation after reconstruction takes considerable biological time, most protocols pace strength and higher-impact training around defined time and performance milestones rather than symptoms alone.
Load across phases
Phases
-
1
Early recovery and motion restoration
0–6 weeksReducing swelling, restoring full knee extension, and reactivating the quadriceps are the primary early goals following injury or surgery.
Load 15%
-
2
Strength and neuromuscular control
6–16 weeksProgressive resistance training and balance exercises rebuild strength and control in preparation for higher-demand movement.
Load 45%
-
3
Advanced strengthening and running progression
16–28 weeksRunning, plyometric, and agility training are gradually introduced as strength and control continue to build toward pre-injury levels.
Load 70%
-
4
Return-to-sport training and testing
28–40+ weeksSport-specific drills and formal return-to-sport testing, including strength symmetry and hop performance, determine readiness for unrestricted activity.
Load 90%
Most guidelines describe a full return to pivoting sport at roughly nine to twelve months post-surgery, and increasingly emphasize meeting objective performance criteria over simply reaching a calendar date.
Keep exploring
More in Lower limb
Hip
The hip is a deep, stable ball-and-socket joint that bears several times body weight during walking and running, making it a common site of both overuse pain and degenerative change.
Pain frequency 55Knee
The knee is the body's largest joint and one of its most frequently injured, relying on ligaments and surrounding muscles rather than bony shape for stability.
Pain frequency 65Ankle & Foot
The ankle and foot absorb and redirect the full force of body weight with every step, making sprains and overuse injuries among the most common in sport and daily life.
Pain frequency 70