dorsal interosseous manus

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Introduction

One of 4 intrinsic muscles of the hand.

Origin

sides of the adjacent metacarpal bones

Insertion

(proximal phalanges & extensor expansion)

Action

abducts fingers 2-4 from an axis through the middle finger

Innervation

ulnar nerve

More general terms

References

  1. Stedman's Medical Dictionary 27th ed, Williams & Wilkins, Baltimore, 1999