🦶 Zone 1,1 – Heel Inner (Medial Calcaneus)

This zone corresponds to the medial portion of the calcaneus — the inner rear of the heel. It plays a major role in rear poise and upright standing.

🔬 Anatomical Role

  • Primary contact point during quiet standing
  • Loads during neutral posture
  • Supports posterior tibialis and medial plantar fascia
  • Firm osseous base: calcaneus is dense, strong, and stable

🔬 Muscle & Tendon Support

Structure Type Action Relevance
Posterior tibialis tendon Tendon Supports arch medially Key stabilizer
Medial plantar fascia Fascia Passive arch support Reinforces calcaneus contact
Calcaneus bone Bone Static load bearing Foundation of poise

⚙️ Biomechanical Function

  • Excellent for vertical load bearing
  • Stable under rearward and downward pressure
  • Cannot generate torque — no rotational strength
  • Minimal sensory feedback

🧠 Verdict

  • Torque Handling: ❌ None
  • Muscle Support: ✅ Strong (passive + tendon)
  • Feedback Quality: ⚠️ Low
  • Stability: 🟢 Very high

🩰 Use in Dance

  • Ideal for:
    • Resetting poise
    • Collecting weight
    • Backing steps or prep poses
  • Not useful for torque or push-off

“If the rest of your foot is chaos, this is where you come home to.”

✅ Summary

Zone 1,1 is a load-bearing powerhouse with low feedback and no torque, but it’s the foundation of static balance. Without it, your poise collapses inward.