📖 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.
Hip External Rotation
Hip Joint (Coxofemoral) • Hip • transverse plane
Rotation of the femur laterally about its longitudinal axis.
Axis: longitudinal
Normal Range of Motion
Standard measurement is seated with hip and knee flexed to 90 degrees, tibia used as the pointer; the leg swings medially as the femur rotates laterally. 0-45 is the AAOS/Norkin & White norm. Prone-position values may differ slightly.
Source: AAOS Joint Motion; Norkin & White 2016
Muscles (10)
| Muscle | Role | Notes |
|---|---|---|
| Piriformis | Primary | — |
| Obturator Internus | Primary | — |
| Obturator Externus | Primary | — |
| Gemellus Superior and Inferior | Primary | — |
| Quadratus Femoris | Primary | — |
| Gluteus Maximus | Secondary | Posterior fibers |
| Gluteus Medius | Secondary | Posterior fibers |
| Sartorius | Secondary | — |
| Iliopsoas | Synergist | Assists when hip is flexed |
| Hamstrings (Group) | Synergist | Biceps femoris assists |
Exercises (12)
Sources
- Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation — Biomechanics of Hip External Rotation