Flexor Carpi Ulnaris as, Anterior View

Description

Running along the extreme medial border of the anterior forearm, the flexor carpi ulnaris forms a prominent superficial column from the medial epicondyle region to the ulnar side of the wrist. Proximally, its humeral head arises from the common flexor origin at the medial epicondyle, while the ulnar head tracks along the posterior border of the ulna, positioning the muscle belly medial to flexor digitorum superficialis and anterior to the ulna. Distally, the tendon narrows and courses superficial to the wrist to reach the pisiform, with continuity to the hook of hamate and base of the fifth metacarpal via the pisohamate and pisometacarpal ligaments. Medial, long, unmistakable. Clinically, this anterior perspective is the practical way to teach how flexor carpi ulnaris relates to the ulnar neurovascular bundle, because the ulnar nerve passes between the humeral and ulnar heads near the elbow, a common site of entrapment in cubital tunnel syndrome. Follow the tendon to the ulnar side of the carpus and you also have a surface landmark for the Guyon canal region, where ulnar nerve compression can occur with cycling or ganglion cysts. Surgeons use this anatomy when planning ulnar-sided wrist approaches and when orienting themselves around the pisiform as a palpable bony reference. Educators will find it well suited for upper limb gross anatomy labs, kinesiology instruction on wrist flexion and ulnar deviation, and exam figures that require clear anterior compartment landmarks. Publishers can pair it with companion plates of the common flexor origin and ulnar nerve course to support chapters on medial epicondylitis, cubital tunnel syndrome, and ulnar-sided wrist pain. Anatomical accuracy verified by SciePro's Medical Advisory Board.