📖 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 (DIP)

Distal Interphalangeal Joints • Hand • sagittal plane

Draft80%

Straightening the fingers at the distal interphalangeal joints.

Axis: medial-lateral

Normal Range of Motion

AROM
0°
Active range
PROM
0°
Passive range

Finger DIP extension is return to neutral (0 deg) from flexed position per AAOS/Norkin & White. Some individuals demonstrate DIP hyperextension of approximately 10-30 deg, which is variable and not a standard normal; primary normal endpoint is 0 deg.

Source: AAOS Joint Motion: Method of Measuring and Recording

Muscles (3)

MuscleRoleNotes
Lumbricals (Hand)PrimaryVia lateral bands to terminal tendon [Murai 2012]
Dorsal Interossei (Hand)PrimaryVia lateral bands to terminal tendon [Murai 2012]
Extensor DigitorumSecondaryCannot fully extend DIP alone — requires intrinsic contribution [Murai 2012]

Exercises (2)

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

Sources