📖 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.
Shoulder Horizontal Abduction
Glenohumeral Joint • Shoulder • transverse plane
Movement of the arm away from the body in the transverse plane from a flexed or horizontally adducted position.
Axis: longitudinal
Normal Range of Motion
Not included in the AAOS/Norkin & White core goniometric set. Start position is 90 degrees of shoulder abduction (or flexion) in the horizontal plane; movement posteriorly is commonly cited as 30-45 degrees, with 45 the most frequently used norm.
Source: Clarkson, Musculoskeletal Assessment; AMA Guides
Muscles (5)
| Muscle | Role | Notes |
|---|---|---|
| Posterior Deltoid | Primary | — |
| Infraspinatus | Primary | — |
| Teres Minor | Secondary | — |
| Middle Trapezius | Secondary | — |
| Rhomboid Major | Secondary | — |
Exercises (10)
Sources
- Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation — Biomechanics of Shoulder Horizontal Abduction