Strength In Knowledge podcast

Movement Patterns Shape Knee Kinetics: Late-Stage ACL Rehab Implications

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ACL rehab doesn’t end when your quad strength hits a number. That’s where it starts getting real.

Dr. Kevin McNamara joins us to break down why basic testing criteria are not enough to send an athlete back into a sport that demands braking, cutting, and reacting. 

What we cover:
  • Rethinking ACL rehab. A recent article on curve decelerations and knee kinetics shows that changing movement strategy changes knee loading. Range of motion and quad strength alone won’t prepare an athlete for sport-representative environments.
  • What late-stage rehab actually needs. Braking capacity, rate of force development, eccentric strength, and exposure to reactive, unpredictable movement.
  • His late-stage testing battery. Isometric dynamometry for peak torque and rate of torque development, plus isokinetic testing. Drop jumps and countermovement jumps unloaded and loaded at 30% and 60% body mass to catch eccentric deficits. The 505 test to evaluate high-speed braking.
  • The limits of LSI. It got us away from time-based clearance, but it measures symmetry, not preparedness. Build the full physical profile instead.
  • Psychological readiness. Trust and confidence are built across the entire rehab process, not screened for at the end. Return to sport means high-risk environments, so the day-to-day process is what prepares them.
If you rehab athletes, this is the standard to build toward.

Social Media:
Rehab2Perform
R2P Academy
Dr. Kevin McNamara

Article Referenced

Galmiche L, Kersting UG, Bill K. Curved decelerations result in greater frontal-plane knee loading than straight-line tasks. Knee. 2026;62:104534. doi:10.1016/j.knee.2026.104534

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