Opponens digiti minimi muscle of hand

1121 Intrinsic Muscles of the Hand Deep LD

Opponens digiti minimi muscle
Details
Origin	Hook of the hamate bone and the flexor retinaculum of the hand
Insertion	Medial border of the fifth metacarpal bone
Artery	Ulnar artery
Nerve	Ulnar nerve
Actions	Opposes the fifth digit
Antagonist	Extensor digiti minimi muscle
Identifiers
Latin	Musculus opponens digiti minimi
TA98
TH	{{#property:P1694}}
TE	{{#property:P1693}}
FMA	{{#property:P1402}}
Anatomical terms of muscle

The opponens digiti minimi muscle is one of the intrinsic muscles of the hand. It is located in the hypothenar eminence, which is the muscular prominence on the medial side of the palm.

Anatomy

The opponens digiti minimi muscle originates from the hook of the hamate bone and the flexor retinaculum of the hand. It inserts into the medial border of the fifth metacarpal bone.

Innervation

The muscle is innervated by the deep branch of the ulnar nerve.

Blood Supply

The blood supply to the opponens digiti minimi muscle is provided by the ulnar artery.

Function

The primary function of the opponens digiti minimi muscle is to oppose the fifth digit (little finger) towards the thumb, which is essential for grasping objects.

Clinical Significance

Injury or damage to the ulnar nerve can impair the function of the opponens digiti minimi muscle, leading to difficulties in performing tasks that require fine motor skills.

See Also

• Hypothenar muscles
• Flexor digiti minimi brevis muscle
• Abductor digiti minimi muscle of hand
• Ulnar nerve
• Hand anatomy