Physical Therapy Toolbox: abductor digiti minimi (hand)

Origin: pisiform bone and tendon of flexor carpi ulnaris muscle

Insertion: base of the proximal phalanx of the 5th finger and ulnar aspect of extensor expansion

Action: abducts little finger

Innervation: deep branch of ulnar nerve, C8 and T1

Blood Supply: ulnar artery

Images (Click on image for larger view)

The muscles of the left hand. Palmar surface. (Abductor digiti minimi [quinti] visible at center left in red.)

Forearm transverse section across the wrist and digits

The radial and ulnar arteries

Ulnar and radial arteries. Deep view


MMT Position:

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