The extensor digiti minimi is a muscle within the superficial compartment of the posterior forearm. The tendon of the extensor digiti minimi passes through the 5th extensor compartment at the wrist. Attachments: Originates from the lateral epicondyle of the humerus. It attaches into the extensor hood of the little finger. Actions: Extension of the little finger, and weak extensor at the wrist. Innervation: Radial nerve (deep branch). Blood supply: Radial artery By TeachMeSeries Ltd (2025) Fig 1The muscles in the superficial layer of the posterior forearm. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Print Article Rate This Article