🦶 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.