Proprioception & Neuromuscular Drills

Knee Angle Matching

1. Sit with eyes closed
2. Partner moves surgical knee to specific angle (e.g., 45°)
3. Hold briefly, then return to start
4. Now try to match that angle with your other leg
5. Open eyes to check accuracy
6. Repeat at various angles

Purpose: Trains your brain to accurately sense knee position without visual feedback.

Weight Shift Recognition

1. Stand on both feet, eyes closed
2. Shift weight 60% onto surgical leg, then 70%, 80%
3. Try to estimate weight distribution
4. Use a scale to verify (advanced: two scales)
5. Practice until estimation matches reality

Single Leg Balance Matrix

Progress through these surfaces, mastering each before moving on:

1. Firm floor → eyes open → eyes closed
2. Foam pad → eyes open → eyes closed
3. BOSU (dome up) → eyes open → eyes closed
4. BOSU (flat up) → eyes open → eyes closed

Time goals: 30 sec (eyes open), 15+ sec (eyes closed)

Balance with Cognitive Task

1. Single leg balance on any surface
2. While balancing, perform cognitive task:
   • Count backward from 100 by 7s
   • Name states, countries, or athletes
   • Spell words backward
   • Catch and identify colored balls

Why: In sport, you can't focus 100% on your knee. Training with divided attention mimics real conditions.

Partner Perturbations

1. Stand on surgical leg (or both legs initially)
2. Partner gently pushes your shoulders in random directions
3. React to maintain balance without stepping
4. Progress: stronger pushes, less predictable timing
5. 30-60 seconds per set, 3-4 sets

Rocker/Wobble Board

1. Stand on balance board
2. Try to keep edges from touching ground
3. Progress: two legs → single leg
4. Progress: eyes open → eyes closed
5. Progress: add ball catches

Platform Tilt Board

Clinic-Based (Often)

Specialized tilting platforms that move unexpectedly. Studies show perturbation training on these platforms significantly improves outcomes after ACL surgery.

Catch and Stabilize

1. Single leg stance
2. Partner throws ball (medicine ball, soccer ball)
3. Catch and stabilize without losing balance
4. Throw back while maintaining position
5. Progress: heavier balls, faster throws, unexpected directions

Reach and Return

1. Single leg stance
2. Reach to touch cones placed around you:
   • Forward, backward, left, right
   • Various heights (low, mid, high)
3. Return to balanced position after each reach
4. Progress: faster reaches, further cones

Y-Balance/Star Excursion

1. Stand on surgical leg at center of "Y" or star pattern
2. Reach opposite leg as far as possible in each direction
3. Touch lightly, return to center
4. Measure reach distance for progress tracking
5. Common test: Anterior, Posteriomedial, Posterolateral

Clinical use: Y-Balance is often used as a return-to-sport criterion. Asymmetry >4cm may indicate increased injury risk.

Hop to Stabilize

Month 4+

1. Start on two feet
2. Small hop forward, land on surgical leg only
3. Stick the landing for 3 seconds
4. Progress: higher hops, lateral hops, rotational hops

Box Drop to Balance

Month 5+

1. Stand on low box (4-6 inches)
2. Step off (don't jump) and land on surgical leg
3. Stabilize in single-leg squat position
4. Hold 3 seconds
5. Progress: higher box, add perturbation after landing

Reactive Agility

Month 6+

1. Partner points in direction (or uses light board)
2. React by moving in that direction
3. Stick landing and return to start
4. Progress: less reaction time, more complex patterns