Extensor Digiti Minimi
Forearm & Wrist
Helps the pinky extend independently — giving you that refined tea-sipping posture even without trying.
Function
Extends fifth digit at MCP/IP joints
Origin
Lateral epicondyle of humerus via common extensor tendon
Insertion
Extensor expansion of fifth digit
Innervation
Posterior interosseous nerve (C7-C8)