📖 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 Flexion (PIP)

Proximal Interphalangeal Joints • Hand • sagittal plane

Draft80%

Bending the fingers at the proximal interphalangeal joints. Main power grip joint.

Axis: medial-lateral

Normal Range of Motion

AROM
0–100°
Active range
PROM
0–100°
Passive range

Standard adult normal is 0-100 degrees for digits 2-5, measured with the goniometer over the dorsal PIP joint. Some sources report up to 110-120 degrees passively; 100 degrees is the most commonly cited textbook value.

Source: AAOS Joint Motion; Norkin & White 2016

Muscles (2)

MuscleRoleNotes
Flexor Digitorum SuperficialisPrimary—
Flexor Digitorum ProfundusSecondaryAlso flexes PIP after FDS

Exercises (4)

Grip Strengthening (Squeeze Ball)
Nerve and Tendon Gliding Exercises (Carpal Tunnel)
Tendon Gliding Exercises (Finger)
Grip Squeeze and Release

Sources