Albany Medical College Virtual Anatomy Lab

Lab 4 - Module 2 - The Hand: Page 11 of 12

Muscles of the Little Finger or Hypothenar Muscles

Short muscles of the little finger: the three hypothenar muscles lie in the hypothenar compartment of the palm; they produce the hypothenar eminence; they are all supplied by the deep branch of the ulnar nerve.


Add the Opponens Digiti Minimi muscle.
Origin - Hook of the Hamate bone and flexor retinaculum

Insertion - Ulnar side of the fifth metacarpal bone

Innervation - Deep Branch of Ulnar Nerve

Action - Opposition of the little finger to the thumb


Add the Flexor Digiti Minimi muscle.
Origin - Hook of the Hamate bone and flexor retinaculum

Insertion - Medial side of base of the proximal phalanx of the little finger

Innervation - Deep Branch of Ulnar Nerve

Action - Flexion of the little finger at the metacarpophalangeal joint


Add the Abductor Digiti Minimi muscle.
Origin - Pisiform bone

Insertion - Medial side of base of proximal phalanx of little finger

Innervation - Deep Branch of Ulnar Nerve

Action - Abduction of the little finger