Name
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.