Dorsal carpal branch of the radial artery

Dorsal Carpal Branch of the Radial Artery

The dorsal carpal branch of the radial artery is a significant vascular structure in the human body, playing a crucial role in the blood supply to the wrist and parts of the hand. Originating from the radial artery, one of the major arteries in the forearm, this branch extends towards the dorsal aspect of the wrist, contributing to the dorsal carpal arch.

Anatomy

The dorsal carpal branch of the radial artery typically arises just before the radial artery enters the hand, proximal to the styloid process of the radius. After its origin, it moves medially across the bones of the wrist, beneath the tendons of the abductor pollicis longus and extensor pollicis brevis muscles. It anastomoses with the dorsal carpal branch of the ulnar artery to form the dorsal carpal arch, a vital source of blood for the dorsal side of the hand.

Function

The primary function of the dorsal carpal branch of the radial artery is to supply blood to the dorsal parts of the wrist and hand. Through its contribution to the dorsal carpal arch, it ensures the perfusion of the carpal bones and the dorsal regions of the metacarpal bones. This arterial supply is essential for the nourishment and functionality of the structures in this region.

Clinical Significance

Knowledge of the dorsal carpal branch of the radial artery is crucial in surgical interventions involving the wrist, such as fracture repairs and reconstructive surgeries. Its location and branching pattern must be considered to avoid vascular injury, which can lead to complications such as inadequate blood supply to the hand or the formation of arteriovenous fistulas.

See Also

• Radial artery
• Ulnar artery
• Carpal bones
• Wrist anatomy