Heel Reference Points for Torque

Overview

• Lecture on sensing and using specific points of the calcaneus (heel) to generate movement and torque.
• Focus on finding two reference points on the heel and using subtle heel actions to change leg/hip rotation.
• Practical drills progress from seated/ground work to standing and sport-like “jab” steps.

Key Concepts

• Two heel reference points:
  • Front notch where the plantar aponeurosis attaches.
  • Back/notch area at the posterior heel.
• Different initiation points produce similar visible motion but different internal sequencing.
• Heel-driven actions can generate torque at the hip when the chain is closed.
• Distinction between moving the whole foot versus isolating heel action with compression.

How To Find The Heel Points

• Use small objects to locate the notch: cutouts from old insoles, a pen, or scissors blade.
• Palpate and apply pressure to locate:
  • The front/plantar aponeurosis attachment point.
  • The posterior notch at the back of the heel.
• Practice feeling pressure on each spot and how the heel responds.

Drills And Progressions

• Ground/Seated Exploration:
  • Place foot in varied orientations and sense twisting/yawing of the chosen heel point away from the opposite leg.
  • Repeat with both the front attachment point and the posterior heel point to feel different initiation.
• Standing Jab-Step Drill:
  • Perform sport-style jab steps (quick direction change) while generating the movement from the front heel point.
  • Repeat jab-step while initiating from the posterior heel point.
  • Focus on landing on the targeted heel and keeping the action localized to that heel point.
• Isolate Forefoot From Heel:
  • Practice ensuring the forefoot can remain separate while you work heel-driven rotation.
  • Avoid letting the whole foot simply move with the heel action; maintain compression on the heel.

Effects On Hip Rotation And Tone

• Front-of-heel initiation:
  • Tends to produce external rotation tendencies through the hip via deep internal rotators’ relative response.
• Back-of-heel initiation:
  • Tends to activate the contralateral deep six rotators and creates relative internal rotation.
• Heel-driven torque versus limb swing:
  • When both ends of the chain are closed, heel action acts like turning a wrench that compresses the hip joint (“nut”).
  • This creates torque at the hip joint distinct from simply swinging or moving the whole leg.
• Practical benefit:
  • Using different heel initiations provides options for varied hip tone and improved movement control.

Key Terms and Definitions

• Calcaneus: Heel bone; primary locus for the drills.
• Plantar aponeurosis: Thick connective tissue on the sole; attachment at the front heel notch.
• Torque (hip): Rotational force at the hip joint created by closed-chain actions originating at the foot/heel.
• Closed Chain: A condition where distal and proximal ends are constrained so forces transmit through joints.

Practical Notes and Tips

• Emphasize subtlety: heel action must include compression/pressure rather than gross foot movement.
• Experiment with foot placement and orientation to feel different sequencing of motion.
• Expect that similar visible motions will have different internal sequencing depending on initiation point.
• Tease apart forefoot versus heel movements if they tend to move as a single unit.
• Treat drills as exploration — be playful and patient while learning the sensations.

Action Items / Next Steps

• Practice locating both heel reference points with simple tools (insoles, pen) to build tactile awareness.
• Do seated/ground heel-twist drills on both heel spots for 5–10 minutes, varying foot orientation.
• Progress to standing jab-step drills, focusing on landing and initiating from the selected heel point.
• Monitor hip rotation and tone; compare sensations when initiating from front versus back heel.
• Continue refining isolation of heel action from forefoot movement.