THE ARTERIAL ARCHITECTURE OF THE PALMAR PART OF THE HAND / 解剖学报

ABSTRACT

The arteries of the palmar part of the hand were examined in 50 hands of adult under the operating microscope.The arteries of the hand are arranged at three main levels the superficial palmar arteries, the deep palmar arteries and the dorsal network. The arterial anastomoses between the levels may be divided into 2 groups the marginal and the central anastomoses, the former which is situated at the radial and ulnar borders of the palm can be subdivided into superficial and deep groups, the latter is located in the central part of the palm including the direct and indirect anastomostic branches, the proximal and distal perforating branches, and the intermetacarpal perforating branches. The deep arch and its branches, as the center in the total arterial architecture of the palmar part of the hand, closely links with the arteries of the superficial and dorsal ones, playing an important role in regulating the collateral circulation of the hand.The flow formula of the Poiseuille's law indicates that the significant correlation exists between the arterial diameter and the blood flow. For the variety of diameter of each portion of the anastomostic branches, we inferred that the main source of blood flow in the superficial arteries is the ulnar artery and in the deep is the radial artery. The blood within the marginal anastomoses flows from palmar to dorsal, the central mainly from the deep arch and its branches.The dominant parts of the collateral circulation of the hand were found, that is, the deep arch dominantes over the superficial arch and the dorsal network, the central anastomosis over the marginal, the deep branches of the marginal over the superficial branches.The arrangement of the digital arteries has been discussed.