Dorsal metacarpal arteries

Illustration of the dorsal metacarpal arteries.

The dorsal metacarpal arteries are a group of arteries located on the dorsal aspect of the hand. They play a crucial role in supplying blood to the metacarpal bones and the overlying skin and tissues.

Anatomy

The dorsal metacarpal arteries are typically three in number and arise from the dorsal carpal arch. This arch is formed by the anastomosis of the radial artery and the ulnar artery on the dorsal side of the wrist.

• First Dorsal Metacarpal Artery: This artery runs along the first metacarpal bone and supplies the thumb.
• Second Dorsal Metacarpal Artery: This artery runs between the second and third metacarpal bones.
• Third Dorsal Metacarpal Artery: This artery runs between the third and fourth metacarpal bones.

Each dorsal metacarpal artery divides into two dorsal digital arteries that supply the adjacent sides of the fingers.

Function

The primary function of the dorsal metacarpal arteries is to provide oxygenated blood to the dorsal aspect of the hand, particularly the metacarpal region. They ensure that the muscles, tendons, and skin in this area receive adequate blood supply for proper function and healing.

Clinical Significance

Injuries to the dorsal metacarpal arteries can lead to compromised blood flow to the hand, which may result in ischemia or necrosis of the tissues. Surgical procedures involving the hand, such as reconstructive surgery or trauma repair, must take care to preserve these arteries to maintain proper blood circulation.

Related Pages

• Radial artery
• Ulnar artery
• Dorsal carpal arch
• Metacarpal bones
• Dorsal digital arteries