The Extensor Carpi Radialis Longus (ECRL) muscle is situated in the forearm, characterized by its elongated structure. It spans along the lateral aspect of the forearm and contributes to the overall musculature of this region.

Origin:
Originating from the lateral supracondylar ridge of the humerus, the ECRL takes its starting point from the bony prominence on the outer side of the elbow joint. This origin provides the foundation for the muscle's extension along the forearm.

Insertion:
The ECRL inserts at the base of the second metacarpal bone, forming a critical attachment with the wrist joint. This insertion point enables the muscle to exert its influence on wrist extension, playing an active role in controlling and facilitating movement in the hand and wrist.

Function:
Functionally, the ECRL acts as a powerful wrist extensor. Its contraction leads to the extension of the wrist joint, providing essential movement for activities requiring upward and backward bending of the hand. Additionally, the muscle contributes to the overall stability of the wrist during various hand movements, showcasing its significance in tasks that involve gripping and controlled hand motions. The ECRL's size and location make it a key player in the intricate network of muscles responsible for forearm and wrist function.

Reverse Wrist Curl (Wrist Extension)

Radial Flexion