امروز چهارشنبه ۲۸ آذر ۱۳۹۷ ساعت ۰۹:۴۲

Artries of the hand: آناتومی تغذیه خونی دست

 

The hand has a very good blood supply, with many anastomosing arteries, allowing the hand to be perfused when grasping or applying pressure. A good majority of these arteries are superficial, allowing for heat loss when needed. In the hand, the ulnar and radial arteries interconnect to form two arches, from which branches to the digits emerge

  • Radial artery – contributes mainly to supply of the thumb and the lateral side of the index finger
  • Ulnar artery – contributes mainly to the supply of the rest of the digits, and the medial side of the index finger

The ulnar artery moves into the hand anteriorly to the flexor retinaculum, and laterally to the ulnar nerve. In the hand, it divides into two branches, the superficial palmar arch, and the deep palmar branch

From the superficial palmar arch, common palmar digital arteries arise, supplying the digits. The superficial palmar arch then anastomoses with a branch of the radial artery. The superficial palmar arch is found anteriorly to the flexor tendons in the hand, deep to the palmar aponeurosis

The radial artery enters the hand dorsally, crossing the floor of the anatomical snuffbox. It turns medially and moves between the heads of the adductor pollicis. The radial artery then anastomoses with the deep palmar branch of the ulnar artery, forming the deep palmar arch, which gives rise to five arteries supplying the digits

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