Name

# Extensor Digiti Minimi

Pronunciation

(eks-TEN-sor DIJ-I-ti MIN-I-mi)

Origin/Proximal Attachment

Lateral epicondyle of the humerus

Insertion/Distal Attachment

Extensor expansion of the little finger

Action/Relevance

Extends the little finger

Innervation

Posterior interosseus nerve (C7,8)

Notes

Muscle for extension of the fifth finger. Origin: radial epicondyle of humerus. Insertion: dorsum of proximal phalanx of the fifth finger.