背景:近年来注射化妆品已变得流行。鼻唇沟是中面部最重要和最危险的区域之一,其与面动脉的三维关系尚不清楚。
方法:通过计算机断层扫描(CT)扫描通过颈外动脉注入氧化铅造影剂的52具尸体。使用Mimics和Origin软件重建三维模型,并使用经验证的算法计算相关数据。
结果:根据与鼻唇沟有关的病程,面动脉有三种类型。在最常见的类型中,占标本的83.7%,面部动脉演变成有角的动脉,面动脉与鼻唇沟之间的水平距离为-1.90±2.40,-3.90±2.95,-5.18±3.42,-5.59±3.53,-5.59±3.83,-6.07±4.10,-6.92±3.70,-6.79±3.37,-4.52±3.20和-2.76±3.60(mm),从鼻翼到口腔连合,垂直距离为-1.90±2.
结论:在鼻唇沟注入填充剂时,面动脉易受损。对于鼻唇沟的上1/3,建议将骨膜上层用于注射,而对于鼻唇沟的下2/3,建议沿着鼻唇沟的真皮层。
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BACKGROUND: Injection cosmetics have become popular in recent years. The nasolabial fold is one of the most important and dangerous regions in the midface, and its three-dimensional relationship with the facial artery remains unclear.
METHODS: Fifty-two cadavers infused with lead oxide contrast medium via the external carotid arteries were scanned by computed tomography (CT). The three-dimensional model was reconstructed using Mimics and Origin software, and the relevant data were calculated using validated algorithms.
RESULTS: There were three facial artery types according to its course in relation to the nasolabial fold. In the most common type, accounting for 83.7% of specimens, the facial artery evolves into an angular artery, with a horizontal distance between facial artery and nasolabial fold of - 1.90 ± 2.40, - 3.90 ± 2.95, - 5.18 ± 3.42, - 5.59 ± 3.53, - 5.59 ± 3.83, - 6.07 ± 4.10, - 6.92 ± 3.70, - 6.79 ± 3.37, - 4.52 ± 3.20, and - 2.76 ± 3.60 (mm) from the nasal ala to the oral commissure and a vertical distance of - 4.03 ± 2.56, - 3.27 ± 2.27, - 2.81 ± 2.57, - 2.1 ± 2.64, - 1.5 ± 3.32, - 0.71 ± 3.99, 0.92 ± 4.43, 0.4 ± 5.31, - 4.14 ± 5.14, - 7.05 ± 4.74 (mm).
CONCLUSIONS: The facial artery is vulnerable to damage when injecting filler in the nasolabial fold. For the upper 1/3 of the nasolabial fold, the supraperiosteal layer is recommended for injection, while for the lower 2/3 of the nasolabial fold, the dermal layer along the nasolabial fold is recommended.
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