【 文献重点摘要 】

Successful eyelid reconstructions have been reported when using an axial nasal chondromucosal flap based on the dorsal nasal artery. The present study aimed to present a detailed anatomical description of the blood supply of the lateral nasal region and the angular artery, in order to propose the angular vessels as a new vascular pedicle for the island nasal chondromucosal flap. A total of 11 cadavers (22 hemi‑faces) were examined. Observations with regard to the origin, course and distribution patterns of the angular artery were recorded. Based on the anatomical study findings, the angular vessels were proposed as a vascular source for the island nasal chondromucosal flap. Observations with regard to the varying origins of the angular artery were categorized into four types. The course of the angular artery along the nasojugal fold was constant. The angular artery branched off into the upper two‑thirds of the lateral nasal region and anastomosed with the other vascular branches on the nasal dorsum. Clinically, reconstruction of a full‑thickness defect of the lower eyelid was successfully performed by using this composite flap based on the angular vessels and an adjacent orbicularis oculi myocutaneous flap. Satisfactory esthetic outcomes were obtained for the donor and recipient sites. The angular artery is a good vascular source for an island nasal chondromucosal flap. The flap may be created safely and successfully in clinic. Island nasal chondromucosal flaps and nasolabial groove skin flaps based on the angular vessels may be designed simultaneously for use on full‑thickness defects of the eyelid.

已有报道使用以鼻背动脉为基础的轴型鼻软骨粘膜瓣进行眼睑再造。本研究旨在对鼻侧区和角动脉的血供进行详细的解剖学描述，以期提出角血管作为岛状鼻软骨粘膜皮瓣的一种新的血管蒂。共检查11具身体(22个半侧面部)。记录有关角动脉起源、走行和分布模式的观察结果。根据解剖学研究结果，提出角血管可作为岛状鼻软骨粘膜皮瓣的血管来源。关于角动脉不同起源的观察分为四种类型。角动脉沿鼻颈皱襞的走行是恒定的。角动脉分支进入鼻侧区上2/3，并与鼻背侧的其他血管分支吻合。临床上，这种以角血管为基础的复合瓣和邻近的眼轮匝肌皮瓣成功地完成了下睑全层缺损的修复。供区和受区均获得了满意的美容效果。角动脉是岛状鼻软骨粘膜皮瓣的良好血管来源。临床上可安全、成功地制作皮瓣。基于角血管的岛状鼻软骨粘膜皮瓣和鼻唇沟皮瓣可同时设计用于眼睑全层缺损。