📖 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.

Popliteus

Deep posterior knee muscle. 'Unlocks' the knee from full extension by initiating internal rotation. Key posterolateral stabilizer.

Draft95%

Anatomy

Origin
Lateral femoral condyle, popliteofibular ligament
Insertion
Posterior tibia (proximal 16.6-35.2% of tibial length)
Action
Knee internal rotation, 'unlocking' the knee from full extension, posterolateral stabilization
Innervation
Tibial nerve (L4-S1); 90% tibial nerve alone, 10% tibial and sciatic
Blood Supply
Inferior medial genicular artery (90%), posterior tibial artery (65%)

Movements (2)

MovementJointRoleNotes
Knee Internal RotationTibiofemoral JointPrimary'Unlocks' knee from full extension
Knee FlexionTibiofemoral JointStabilizerDynamic stabilization and control

Exercises (1)

ExerciseRole
Leg CurlSynergist

Sources