Muscle Anatomy

flexor carpi radialis

The flexor carpi radialis muscle is located in the anterior compartment of the forearm, forming part of the muscles responsible for flexing the wrist. It is a long and slender muscle with a fusiform shape.

Originating from the medial epicondyle of the humerus, the flexor carpi radialis takes its starting point from the bony prominence on the inner side of the elbow.

The muscle inserts into the base of the second and third metacarpal bones. This insertion site establishes a connection with the bones of the hand.

Functionally, the flexor carpi radialis is a powerful flexor of the wrist joint. It is actively involved in bringing the hand closer to the anterior aspect of the forearm, a movement known as wrist flexion. Additionally, the muscle contributes to radial deviation of the hand, where the hand moves toward the thumb side. The flexor carpi radialis plays a significant role in various activities requiring precise control of the hand and wrist, such as typing, writing, and manipulating objects. It is part of the group of muscles that contribute to the overall dexterity and functionality of the hand and wrist.