Yang D, Morris S F
Department of Surgery, Dalhousie University, Halifax, Nova Scotia, Canada.
Ann Plast Surg. 1998 Jan;40(1):28-33. doi: 10.1097/00000637-199801000-00006.
The aims of this study were to investigate the vascular communication between the superficial temporal artery (STA) and the posterior auricular artery (PAA) and to determine the vascular territory of various retroauricular flaps for flap design. A series of eight adult fresh cadavers were perfused with a mixture of lead oxide, gelatin, and water through the common carotid and femoral arteries. The full thickness of scalp and facial skin was removed with the STA and the PAA. A radiograph was taken of each specimen. After the retroauricular flap with the PAA from the posterior auricular and mastoid regions was elevated, another radiograph was taken of the specimen. Our radiographic assessment revealed two patterns of vascular anastomosis between the STA and PAA. The auricular anastomoses were found at the upper portion of the posterior surface of the ear, where some reticular anastomoses occurred between auricular branches derived from the STA and the PAA. The scalp anastomoses were located in the scalp superior to the ear, where some reduced caliber choke anastomoses or true anastomoses existed between the parietal branch and the terminal branches of the PAA. The results of this study will be helpful for better understanding of the vascular communication between the STA and the PAA and the vascular territory of retroauricular flaps. Our findings will also provide anatomic information and guidance for the design of reliable flaps.
本研究的目的是调查颞浅动脉（STA）与耳后动脉（PAA）之间的血管交通，并确定各种耳后皮瓣的血管分布区域以用于皮瓣设计。通过颈总动脉和股动脉向8具成年新鲜尸体灌注氧化铅、明胶和水的混合物。连同STA和PAA一起去除头皮和面部皮肤的全层。对每个标本进行X线摄影。从耳后和乳突区域掀起带有PAA的耳后皮瓣后，再对标本进行X线摄影。我们的影像学评估显示STA和PAA之间存在两种血管吻合模式。耳吻合位于耳后表面的上部，来自STA和PAA的耳支之间出现一些网状吻合。头皮吻合位于耳上方的头皮中，顶支与PAA的终末支之间存在一些管径变细的阻塞性吻合或真性吻合。本研究结果将有助于更好地理解STA与PAA之间的血管交通以及耳后皮瓣的血管分布区域。我们的发现还将为可靠皮瓣的设计提供解剖学信息和指导。
