📖 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.
Ankle Plantarflexion
Talocrural Joint • Ankle • sagittal plane
Draft80%
Pointing the foot downward, away from the shin.
Axis: medial-lateral
Normal Range of Motion
AROM
0–50°
Active range
PROM
0–50°
Passive range
Talocrural plantarflexion from neutral. AAOS and Norkin & White cite 0-50 deg (some sources report up to 0-45 deg). PROM approximately equals AROM.
Source: AAOS Joint Motion: Method of Measuring and Recording
Muscles (7)
| Muscle | Role | Notes |
|---|---|---|
| Gastrocnemius | Primary | — |
| Soleus | Primary | — |
| Tibialis Posterior | Secondary | — |
| Peroneus Longus (Fibularis Longus) | Secondary | — |
| Peroneus Brevis (Fibularis Brevis) | Secondary | — |
| Flexor Hallucis Longus | Secondary | — |
| Flexor Digitorum Longus | Secondary | — |
Functional Tasks (4)
Walkingessential
Stair Climbingessential
Carrying and Lifting Objectssupportive
Running and Joggingessential
Exercises (37)
Sources
- Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation — Biomechanics of Ankle Plantarflexion