The flexor carpi ulnaris is a muscle within the superficial compartment of the anterior forearm. Attachments: Originates from the medial epicondyle of the humerus and the olecranon of the ulna. Attaches to the pisiform bone, hook of hamate, and base of the 5th metacarpal. Actions: Flexion and adduction at the wrist. Innervation: Ulnar nerve. Blood supply: Ulnar artery and posterior ulnar recurrent artery By TeachMeSeries Ltd (2025) Fig 1The superficial muscles of the anterior 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