📖 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.
Vastus Intermedius
Deep component of the quadriceps beneath rectus femoris. Exhibits significant structural diversity. Forms complex multi-layered structure with VM.
Draft95%
Anatomy
- Origin
- Anterior and lateral surface of femoral shaft
- Insertion
- Patella (deep layer) via quadriceps tendon; forms complex multi-layered structure with VM
- Action
- Knee extension
- Innervation
- Femoral nerve (L2-L4), with medial portions sharing innervation with VM
- Blood Supply
- Lateral femoral circumflex artery
Movements (1)
| Movement | Joint | Role | Notes |
|---|---|---|---|
| Knee Extension | Tibiofemoral Joint | Primary | — |
Exercises (7)
| Exercise | Role |
|---|---|
| Wall Sit Isometric | Primary |
| Leg Extension | Primary |
| Wall Ball Squat | Primary |
| Seated Knee Extension (Bodyweight) | Primary |
| Single-Leg Sit-to-Stand | Primary |
| Eccentric Stair Descent | Synergist |
| Standing Quad Stretch | lengthening |
Sources
- Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation — Anatomy of Vastus Intermedius — origin, insertion, action, innervation
- Muscles: Testing and Function with Posture and Pain — Manual muscle testing for Vastus Intermedius