Musculus opponens digiti minimi

Musculus opponens digiti minimi is a muscle located in the hand that plays an important role in the movement and control of the little finger. In this article, we will provide a detailed overview of the muscle, its anatomy, function, and clinical significance.

Anatomy

The musculus opponens digiti minimi, also known as the opponens digiti quinti, is a small muscle located in the palm of the hand. It originates from the hook of the hamate bone and the flexor retinaculum, which is a band of connective tissue that spans across the wrist. The muscle then inserts onto the medial side of the base of the proximal phalanx of the little finger.

Function

The main function of the musculus opponens digiti minimi is to oppose the movement of the little finger towards the thumb. This action allows for precise and controlled movements of the little finger, such as grasping objects or performing fine motor tasks. Additionally, the muscle contributes to the stability of the little finger and helps maintain the arches of the hand.

Clinical Significance

Injuries or conditions affecting the musculus opponens digiti minimi can result in functional impairment of the little finger. For example, damage to the muscle can lead to weakness or loss of control in opposing the little finger, making it difficult to perform tasks that require precision or grip strength. In some cases, repetitive strain or overuse of the muscle can lead to inflammation and pain, a condition known as opponens digiti minimi syndrome.

See Also

• Hand anatomy
• Muscles of the hand