The E3 Rehab Podcast 231. ACL Rehab: Phase 3 [4-6+ months] w/ Marc Surdyka and Chris Hughen
Dec 16, 2025
Marc Surdyka, a Doctor of Physical Therapy and ACL rehab specialist, shares insights on phase 3 of ACL rehabilitation. He discusses crucial timelines for implementing running and plyometric exercises, along with criteria for safe initiation. The conversation covers individualized training plans, strength benchmarks, and innovative jumping progressions. Marc also highlights the importance of monitoring technique and managing fatigue in plyometric training. Tune in for expert advice on balancing rehab and performance!
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Phase Three Is A Continuation
- Phase three (≈4–6+ months) is a continuation of phase two focused on jumping, landing, and running while keeping strength work ongoing.
- Starting plyometrics or running at ~4 months is conservative but realistic for many non-elite patients when strength and control are established.
Strength Heuristics To Start Plyos And Running
- Use leg-press heuristics to gate plyometrics: aim for ~1x body mass single-limb and ~2x double-limb for 8 reps before bilateral landings.
- For running, aim for ≥70% isometric knee extensor strength and a single-leg leg-press ≈1.25x body weight before progression.
Use Stricter Criteria When Possible
- Consider stricter entry criteria (AspiTar): aim for ≥80% limb symmetry for quad strength and eccentric CMJ impulse before running.
- Use dynamometer targets (~2 N·m/kg as minimum; 3 N·m/kg ideal) to guide progression if available.