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Abductor digiti minimi is the most medial of the hypothenar muscles, situated along the ulnar border of the flexor digiti minimi brevis and superficial to opponens digiti minimi muscle. Together, these three muscles form the hypothenar eminence.
Extending between the calcaneus and fifth digit, the function of abductor digiti minimi is to support the lateral longitudinal arch of the foot during walking and running by abducting the fifth toe. This article will discuss the anatomy and function of the abductor digiti minimi muscle.
In human anatomy, the abductor digiti minimi (abductor minimi digiti, abductor digiti quinti, ADM) is a skeletal muscle situated on the ulnar border of the palm of the hand.
Place the patient's forearm in supination and their wrist in neutral. Now instruct the patient to spread (abduct) their fingers, specifically the 5th digit. Press against the 5th digit (adduction), creating an isometric contraction of the abductor digiti minimi.
The abductor digiti minimi is a hypothenar muscle located within the hand. It is the most superficial of the hypothenar muscles. Attachments: Originates from the pisiform and the tendon of the flexor carpi ulnaris. Attaches to the base of the proximal phalanx of the little finger. Actions: Abduction of the little finger.
Located along the outer border of the foot, the abductor digiti minimi (foot) is a muscle that shares its central margin with the lateral plantar nerves and vessels.
Abductor Digiti Minimi. Origin. Pisiform. Insertion. Medial side of base of proximal phalanx of little finger. Action. Abducts small finger. Innervation. Deep branch of ulnar nerve (C8 and T1)