When Can You Start Jumping After ACL Reconstruction?
Updated: Sep 23
Quick answer: Jumping should be introduced when the knee is settled and you have adequate strength, control and landing quality, not simply because a certain number of weeks has passed. Your rehabilitation team should guide progression.
Return to sport after ACL reconstruction requires more than time and jogging. Strength symmetry, power, landing control, change-of-direction ability, confidence and sport-specific exposure all matter, and they should be rebuilt progressively before unrestricted competition.
For this stage of ACL reconstruction rehabilitation, the most useful priorities are usually:
controlling swelling and restoring full knee extension early
re-establishing strong quadriceps activation
progressing walking and strength with good movement quality
using objective strength, hopping and control criteria before higher-risk sport
ACL rehabilitation should be criteria-based rather than driven only by the calendar. Time matters because the graft and tissues need to heal, but time alone does not prove that strength, control or confidence have returned. Progress when swelling is controlled, movement is appropriate for the stage and the previous level of loading is being tolerated well.
Use jumping and hopping as training as well as testing. Progress from two-leg to single-leg tasks, predictable to reactive drills and straight-line to multidirectional work. Objective testing is much more useful than deciding based only on how the knee feels.
chasing running or sport before basic strength has recovered
accepting persistent loss of knee extension
progressing because a certain week has arrived rather than because criteria are met
doing only isolated exercises and not rebuilding jumping, landing and change-of-direction capacity
When should you get extra help?
Seek review if the knee suddenly gives way with a new injury, swelling increases sharply after a twist, extension is progressively being lost, the wound becomes increasingly red or discharges, or pain and swelling are worsening rather than settling with appropriate load management.
For higher-level activity, progression should be criteria-led. Strength, control, confidence and tolerance of lower-level loading should be established before adding speed, impact, jumping or change of direction.
full knee extension and low reactive swelling
strong quadriceps activation and progressive leg strength
good movement quality with walking, squatting and single-leg tasks
criteria-based progression into running, jumping and sport
progressing several things at once, making it impossible to tell what caused a flare
chasing repetitions or distance while movement quality deteriorates
staying on very easy exercises for weeks after they have stopped being challenging
ignoring individual restrictions or red-flag symptoms because a generic timeline says you should be further ahead
If you need advice tailored to you, book a physiotherapy assessment.
More rehabilitation resources
Continue with the ACL Reconstruction rehabilitation hub
Full physiotherapy guide
For a structured programme from the early stages through later rehabilitation, the full ACL Reconstruction Guide brings the exercises, progression guidance and practical recovery advice together in one place.
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