Abductor digiti minimi (hand)

The abductor digiti minimi (hand) muscle is a particularly strong skeletal muscle of the hand. It is attached to the bones of the hand by tendons and is shaped like a spindle. The abductor digiti minimi (hand) muscle runs from pisiform bone, to the metacarpophalangeal joint (first knuckle) to the interphalangeal joint (2nd knuckle) of the little finger. Then abductor digiti minimi (hand) muscle is controlled by the somatic nervous system, which manages the body's voluntary movements. Its main function is to pull the little finger away from the other fingers (abduction). It plays an important role when the hand grasps something tightly. It helps flex the metacarpophalangeal joint. Nerve functions are supplied by the deep branch of the ulnar nerve. The abductor digiti minimi (hand) can be used as a donor muscle in opponensplasty, a surgery to restore thumb opposition when that has been damaged or injured. This surgery dates to 1921, and is sometimes referred to as a Huber Transfer. Anatomy textbooks report nine variations of the structure and tendon attachments to the bone that are common enough to be medically reported in the literature.

Written and medically reviewed by the Healthline Editorial Team
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In Depth: Abductor digiti minimi (hand)

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