掌背动脉的解剖和临床应用观察

为了解掌背动脉的解剖资料，对４３只成人尸体手第１～４掌背动脉解剖发现：第１掌背动脉８６％由桡动脉发出，１４％由拇指主要动脉或桡动脉浅支替代，第２掌背动脉８６％起自腕背动脉，第３、４掌背动脉６７％由腕背动脉与掌深弓深支吻合而成。第１～４掌背动脉有皮支４～８支。并有远近两个吻合点。掌背血管具有多源性和吻合丰富的特点，且分布优势在掌指关节。设计皮瓣手术切取方便，特别适用于手指皮肤软组织缺损的修复。临床已应用１２例。

Anatomic observation of the dorsal metacarpal arteries

Anastomosis between the first to the fourth dorsal metacarpal arteries was observed in 43 hands of adult corpses.It was found that 86% of the first dorsal metacarpal artery arises from the radial artery,14% is replaced by the main artery of thumb or superficial branches of the radial arteries;eighty-six percent of the second dorsal metacarpal artery originates from the dorsal carpal artery. Sixtyseven percent of the third and the fourth dorsal metacarpal arteries is formed by anastomosis of the dorsal carpal artery and its deep palmar arch. The first to the fourth dorsal metacarpal arteries have 4 to 8 cutaneous branches and proximal and distal anastomoses. It is concluded that the dorsal metacarpal arteries are characterized with multiple sources and abundant anastomoses around the metacarpophalangeal joints,which can be used with advantage in the repair of soft tissue defects of the area.