The flexor carpi radialis muscle is one of 4 muscles within the superficial layer of the anterior compartment of the forearm, and is responsible for flexion and abduction at the wrist joint.

The other muscles in this layer are the flexor carpi ulnarispalmaris longus and pronator teres. It is located between the palmaris longus and the pronator teres.

The muscles of the superficial layer share a common origin from the medial epicondyle of the humerus.

The flexor carpi radialis can be easily palpated within the distal forearm, just lateral to the midline. It is a useful landmark, as just lateral to this tendon, the radial pulse can be palpated.

Origin
Medial epicondyle of the humerus (common flexor origin)
Insertion
Bases of metacarpals II (index) and III (middle)
Innervation
Median Nerve
Blood Supply
Ulnar artery
Antagonist
Extensor carpi ulnaris
Action Flexion and abduction at the wrist