Flexor carpi ulnaris

Musculus flexor carpi ulnaris

MuscularSuperficial musclesArmLeft and right

View left in 3D View right in 3D

What it is
The most medial superficial flexor, arising from the medial epicondyle and from the olecranon and posterior border of the ulna, and inserting on the pisiform (and via ligaments on the hamate and fifth metacarpal).
Function
Flexes and adducts (ulnar-deviates) the wrist.
Size
About 25 cm long, fleshy almost to the wrist.
Clinical note
The ulnar nerve enters the forearm between its two heads — the cubital tunnel.