📖 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 Adduction (MCP)

Metacarpophalangeal Joints • Hand • frontal plane

Draft80%

Bringing the fingers together at the metacarpophalangeal joints.

Axis: anterior-posterior

Normal Range of Motion

Adduction is the return of the abducted finger to the midline (adjacent to the middle finger); full adduction is fingers touching, i.e. 0 degrees from neutral. No published goniometric norm; typically assessed as ability to close the fingers together or side-to-side comparison.

Source: Norkin & White 2016

Muscles (3)

MuscleRoleNotes
Palmar InterosseiPrimaryThree PIs adduct index, ring, little fingers toward middle finger [Eladoumikdachi 2002]
Flexor Digitorum ProfundusStabilizerMCP stability during adduction
Extensor DigitorumStabilizerMaintains finger extension during adduction

Exercises (2)

Finger Adduction Exercise (Palmar Interossei)
Finger Adduction (Card Squeeze)

Sources