Opponens Digiti Minimi

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The Opponens Digiti Minimi is a muscle of the hand.

Anatomical Attachments:

• Origin: Attaches to the transverse carpal ligament and the hamulus of the hamate bone.
• Insertion: Attaches to the ulnar border of the 5th metacarpal bone.

Action: Contracts the 5th metacarpal bone to face the thumb and deepens the hollow of the hand.

Synergist: Palmaris brevis, Abductor digiti minimi, Flexor digiti minimi, and Opponens digiti minimi.

Antagonist: Abductor pollicis brevis, flexor pollicis brevis, Opponens pollicis, Adductor pollicis.

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Nerve Supply: Ulnar Nerve.

Vascular supply: Deep volar branch of the ulnar artery and the dorsum carpal branch of the ulnar artery.

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