Hip Internal Rotation — Fix Flat Feet & Knee Cave

by @elastaboy · Elsa · 3 exercises · 8fps GIFs
Source reel
💡 How to follow: Flat feet and knee cave often start at the hips — a hip joint that lacks internal rotation makes the body spin the whole leg outward, and the knees/arches/feet pay the price. Fix the rotation with these 2 drills: seated hip CARs (3×8 each side, slow) and frog-squat hip internal rotation (3×6 each side, hold 2s).
1

Diagnosis — Hip Rotation Compensation

Assessment
Understand the pattern
Diagnosis — Hip Rotation Compensation

When the hip joint lacks internal rotation, the body spins the whole leg outward from the hip socket to create space — still walking and squatting, but the rotation has to go somewhere: knees drift inward, arches collapse, the foot flattens. It loads every joint below with forces they were never built to handle.

  1. Check for flat feet, knee cave, collapsed arches
  2. Understand it often starts at hip internal rotation, not the feet
  3. The body spins the leg outward as a workaround
  4. Fix the rotation — the joints below stop paying the price
2

Seated Hip CARs (Controlled Articular Rotations)

Drill 1
3 × 8 each side, slow
Seated Hip CARs (Controlled Articular Rotations)

Sit tall with the knee bent at 90°, and slowly rotate the shin inward then outward through the full range. Controlled, slow — quality of motion over speed.

  1. Sit tall, knee bent at 90°
  2. Slowly rotate the shin inward, then outward
  3. Move through the full range
  4. 3 sets of 8 each side, controlled and slow
3

Frog Squat Hip Internal Rotation

Drill 2
3 × 6 each side, hold 2s
Frog Squat Hip Internal Rotation

Drop into a deep frog position, then drive one knee inward toward the floor, hold 2 seconds, and alternate. This directly trains hip internal rotation in a loaded position.

  1. Drop into a deep frog squat position
  2. Drive one knee inward toward the floor
  3. Hold 2 seconds, then alternate sides
  4. 3 sets of 6 each side