📖 Static demo — read-only snapshot
You’re browsing a static build of the Body IQ knowledge graph, so everything loads with no backend. A few things that need the live server are turned off here:
- Global search (sidebar) is disabled — it queries the API.
- The JSON API and the API “Try it” playgroundaren’t included.
- The data is a snapshot — it refreshes only when the demo is rebuilt, not live from the database.
Everything else — the body map, progression ladders, coverage heatmap, exercise finder, and all anatomy/exercise/source pages — works fully. The full app (live search + API + database) runs from the source on GitHub.
Foot Inversion
Subtalar Joint • Ankle • frontal plane
Turning the sole of the foot medially (inward).
Axis: anterior-posterior
Normal Range of Motion
AAOS value of 0-35 reflects combined hindfoot/forefoot inversion measured at the foot. Isolated subtalar (rearfoot) inversion measured from calcaneal position is only about 5 degrees (Norkin & White).
Source: AAOS Joint Motion; Norkin & White 2016
Muscles (5)
| Muscle | Role | Notes |
|---|---|---|
| Tibialis Anterior | Primary | — |
| Tibialis Posterior | Primary | — |
| Flexor Hallucis Longus | Secondary | — |
| Flexor Digitorum Longus | Secondary | — |
| Soleus | Synergist | Assists via calcaneal pull |
Functional Tasks (1)
Exercises (7)
Sources
- Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation — Biomechanics of Foot Inversion