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The Flexor Carpi Ulnaris is in the Superficial Layer of the Anterior Compartment of the forearm. It is also a member of the Wrist Flexor Group; the muscles of the wrist flexor group are:
- Flexor carpi radialis
- Palmaris longus
- Flexor carpi ulnaris
ATTACHMENTS:
- Medial epicondyle of the humerus via the common flexor belly/tendon to the ulnar side of the anterior hand.
- The distal attachment is onto the pisiform, hook of the hamate, and the anterior side of the base of the fifth metacarpal.
ACTIONS:
- Flexes the hand at the wrist joint.
- Ulnar deviates the hand at the wrist joint.
- Flexes the forearm at the elbow joint.
NOTES:
- The flexor carpi ulnaris is one of five muscles of the common flexor belly/tendon that is involved with medial elbow tendinopathy (aka golfer’s elbow).
- The flexor carpi ulnaris engages isometrically to stabilize the pisiform whenever the abductor digit minimi manus of the little finger contracts.
