以掌背动脉为蒂尺骨远段背侧骨瓣移位术的应用解剖

目的 为以掌背动脉为蒂的尺骨远段背侧骨瓣移位修复第３、４、５掌骨头缺损提供解剖学依据。方法 在３０侧成人上肢标本上解剖，观察腕背动脉网的构成及分支。结果 腕背动脉网由桡动脉及尺动脉腕背支及与骨间后动脉终末支，骨间前动脉腕背支吻合形成，由该网发生第２、３、４掌背支，第２、３、４掌背动脉由掌背支与掌深弓所发深支吻合而成。结论 以第３、４掌背动脉为蒂的尺骨远端背侧半片骨瓣，可修复第３、４、５掌骨头缺损。

THE APPLIED ANATOMY OF TRANSPOSITION OF THE DISTAL DORSAL ULNA BONE FLAP PEDICLED WITH DORSAL METACARPAL ARTERY

Objective To investigate the anatomic basis for transposition of the distal dorsal ulna bone flap pedicled with dorsal metacarpal artery to repair the defect of the 3rd or 4th and 5th metacarpal bone head.Methods In 30 adult cadaveric upper limbs, the branches and constitutions of the dorsal carpal arterial networks were observed.Results The dorsal carpal arterial networks were consisted of the dorsal carpal branches of ulnar and radial arteries, the terminal branches of posterior interosseous artery and the dorsal carpal branch of anterior interosseous artery, and then the 2nd, 3rd, 4th dorsal metacarpal branches were originated from the networks. The dorsal metacarpal branches were anastomosed with the deep branches of deep palmar arch to constitute the dorsal metacarpal artery.Conclusion Transposition of the distal dorsal ulna bone flap pedicled with the 3rd, 4th dorsal metacarpal arteries can be used in repairing the defect of 3rd, 4th and 5th metacarpal bone head.