📖 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.
Extensor Carpi Ulnaris
Posterior forearm muscle. Extends and ulnarly deviates the wrist.
Draft95%
Anatomy
- Origin
- Lateral epicondyle and posterior ulnar border
- Insertion
- Base of 5th metacarpal (dorsal surface)
- Action
- Wrist extension, ulnar deviation
- Innervation
- Posterior interosseous nerve (C7-C8)
- Blood Supply
- Posterior interosseous artery branches
Movements (2)
| Movement | Joint | Role | Notes |
|---|---|---|---|
| Ulnar Deviation | Radiocarpal Joint | Primary | — |
| Wrist Extension | Radiocarpal Joint | Secondary | — |
Exercises (9)
| Exercise | Role |
|---|---|
| Wrist Deviation Exercise (Radial/Ulnar) | Primary |
| 6-Direction Wrist Resistance Training | Primary |
| Ulnar Deviation Strengthening | Primary |
| Wrist Circles (AROM) | Primary |
| Dart Thrower's Motion | Stabilizer |
| Radial Nerve Glide | lengthening |
| Wrist Extensor Stretch | lengthening |
| Desk Wrist Extensor Stretch | lengthening |
| Radial Deviation Strengthening | lengthening |
Sources
- Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation — Anatomy of Extensor Carpi Ulnaris — origin, insertion, action, innervation
- Muscles: Testing and Function with Posture and Pain — Manual muscle testing for Extensor Carpi Ulnaris