📖 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.

Finger Extension (PIP)

Proximal Interphalangeal Joints • Hand • sagittal plane

Draft80%

Straightening the fingers at the proximal interphalangeal joints.

Axis: medial-lateral

Normal Range of Motion

AROM
0°
Active range
PROM
0°
Passive range

Normal PIP extension is return to the 0-degree neutral position; hyperextension beyond 0 is not considered a normal component of active PIP motion in AAOS/Norkin & White norms, though a few degrees of passive hyperextension can occur in lax individuals.

Source: AAOS Joint Motion; Norkin & White 2016

Muscles (3)

MuscleRoleNotes
Extensor DigitorumPrimaryVia extensor expansion
Lumbricals (Hand)SynergistIP extension via extensor expansion
Dorsal Interossei (Hand)SynergistIP extension via extensor expansion

Exercises (2)

Nerve and Tendon Gliding Exercises (Carpal Tunnel)
Tendon Gliding Exercises (Finger)

Sources