Mighty Nimble
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Post-ACL Reconstruction (Intermediate) — 25 Minute Session

A knee-friendly strength + stability routine to rebuild single-leg control and confidence (~25 minutes).

Warm-Up (5 minutes)

Increase blood flow and gently prep knee range of motion.

Stationary Bike
Stationary Bike4 min
Heel Slide
Heel Slide1 min
Quad Set
Quad Set30 sec

Circuit A — Hip + Knee Control

Move with control; keep pain-free range. Rest as needed to maintain form.

Glute Bridge
Glute Bridge10x
Side-Lying Clamshell
Side-Lying Clamshell12x each side
Terminal Knee Extension (Band)
Terminal Knee Extension (Band)12x each side
3 rounds · 15 sec rest
1 min rest

Circuit B — Functional Strength + Balance

Use a chair height that allows good knee alignment; keep steps low and controlled.

Sit to Stand
Sit to Stand10x
Step Up
Step Up8x each side
Single-Leg Balance
Single-Leg Balance30 sec each side
Standing Calf Raise
Standing Calf Raise12x
2 rounds · 15 sec rest

Cool-Down (3–4 minutes)

Downshift and restore comfort after strengthening.

Calf Stretch
Calf Stretch45 sec each side
Hamstring Stretch
Hamstring Stretch45 sec each side
Rebuilding the Quad-Hamstring Co-Contraction

Rebuilding the Quad-Hamstring Co-Contraction

Quad Sets and Terminal Knee Extensions specifically retrain VMO firing patterns lost after ACL injury, while Heel Slides restore hamstring length under load. Together, they rebuild the co-contraction timing that protects your reconstructed ligament before progressing to full weight-bearing movements like Step Ups.

Why Single-Leg Control Is Your Real Benchmark

Why Single-Leg Control Is Your Real Benchmark

ACL reconstruction doesn't just repair tissue — it severs proprioceptive nerve endings that tell your brain where your knee is in space. Single-Leg Balance and Sit-to-Stand directly retrain this neuromuscular feedback loop, which is why athletes who skip this work re-injure at dramatically higher rates even after full strength returns.

Loading the Graft Without Overloading the Joint

Loading the Graft Without Overloading the Joint

This routine follows a proximal-to-distal progression — Glute Bridges and Clamshells load hip abductors first, reducing valgus stress before your knee handles Step Up demands. Track your Single-Leg Balance hold time each session; when you can hold 30 seconds eyes-closed, you're ready to increase Step Up height or add a tempo challenge.

Post-ACL Reconstruction (Intermediate) — 25 Minute Session | Mighty Nimble | Mighty Nimble