<正> Thirty adult upper extremities were used to study the arteries of the hand byangiography

cross-sectional dissection and three-dimensional reconstruction withmicrocomputer.The arterial skeleton of the palm was composed of superficial

deep anddorsal planes.There were three main anastomotic pathways between the radial and ulnararteries or their branches in the radio-ulnar direction

while in the palmar dorsal dirce-tion there were three anastomotic zones between the palrnar and dorsal arterial plancs.The branches of the deep palmar arch radiated distally

proximally

palmarly anddorsally

so that the arch acted as the center of the arterial network of the hand.Thetransverse arterial allocations in the carpo-metacarpal segment of the palm were four intypes

but in the mid-palmar and metacarpo-phalangcal segments were three only.Accord-ing to the sources

cross-sectional area

irrigation territories and anastomoses of the ar-teries in each segment

the clinical significance in the rcplantation of the amputatcd palmshas been discussed