📖 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.
Biceps Femoris — Short Head
Lateral hamstring, short head. Single-joint muscle (knee only). Uniquely innervated by the common fibular division of the sciatic nerve.
Draft95%
Anatomy
- Origin
- Lateral lip of linea aspera, lateral supracondylar line
- Insertion
- Head of fibula (joins long head tendon)
- Action
- Knee flexion, knee external rotation
- Innervation
- Common fibular (peroneal) division of sciatic nerve (L5-S2); single branch
- Blood Supply
- Perforating branches of profunda femoris artery
Movements (2)
| Movement | Joint | Role | Notes |
|---|---|---|---|
| Knee Flexion | Tibiofemoral Joint | Primary | — |
| Knee External Rotation | Tibiofemoral Joint | Primary | Moment arm at 30° flexion: 14.7-27.9 mm |
Exercises (2)
| Exercise | Role |
|---|---|
| Leg Curl | Primary |
| Standing Hamstring Stretch (Foot on Step) | lengthening |
Sources
- Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation — Anatomy of Biceps Femoris — Short Head — origin, insertion, action, innervation
- Muscles: Testing and Function with Posture and Pain — Manual muscle testing for Biceps Femoris — Short Head