🦶 Zone 2,2 – Rear Arch Center (Calcaneal Tuberosity)

This is the main contact zone of the calcaneus (heel bone) — the calcaneal tuberosity, specifically the medial and lateral processes.
It is the poster child of passive support, absorbing direct ground reaction force during standing, walking, and transitions.

🔬 Muscle & Structural Support

Structure Type Function Relevance
Plantar fascia (central band) Fascia Passive tension and support ✅ Major contributor
Flexor digitorum brevis (origin) Muscle Begins here, stabilizes forefoot ⚠️ Indirect role
Heel fat pad Cushion Shock absorption ✅ Crucial for comfort, not power
Calcaneus bone Bone Main weight-bearing structure ⭐ Primary support structure

Summary: This is the "load zone". It holds you up — not by strength, but by design and geometry.
Great for standing, terrible for torque.

🧠 Biomechanical Verdict

  • Stability: 🟢 Excellent
  • Torque Handling: ❌ Poor — no rotational leverage
  • Feedback Quality: ⚠️ Dull — mechanoreceptors limited by fat pad

“Zone 2,2 doesn’t help you do much — but it’s what you stand on when you do everything else.”

⚖️ Torque & Collapse Dynamics

  • Torque generation? ❌ None — zone is too far back
  • Torque resistance? ⚠️ Minimal — will roll or slide under shear forces
  • Collapse risk? Low — if weight stays vertical

🩰 Use in Dance

  • Critical for:

    • Mid-point transitions
    • Grounded balance
    • Soft landings and check steps

  • Poor for:

    • Push-offs
    • Turns
    • Elevated poise

✅ Verdict

  • Torque Handling: ❌ Minimal
  • Muscle Support: ⚠️ Indirect
  • Feedback Quality: ⚠️ Blunted by padding
  • Stability: 🟢 Maximum