背景:了解眶下动脉(IOA)的解剖结构对于恢复中面前内侧至关重要;但是,缺乏充分描述IOA分支解剖结构的研究,它们与眼动脉分支的联系尚不清楚。
目的:本研究旨在使用三维(3D)技术阐明IOA在下眼睑内展开的解剖学特征,从而为临床外科手术提供解剖学基础。
方法:对132具尸体头侧造影剂注射后的计算机断层扫描进行了分析,利用Mimics软件进行重建。这项研究的重点是检查IOA的吻合,它的主要分支,和从眼动脉发出的分支。
结果:观察到I型IOA的患病率为38.6%(51/132),而II型IOA在61.4%(81/132)的病例中发现。观察到IOA与角动脉直接吻合的发生率为7.6%(10/132)。在57.6%(76/132)的病例中发现了眼睑分支(PIOA)的存在。在下眼睑,发现了四种不同的IOA分布模式:I型PIOA的可能性为5.3%,而对于类型IIA,IIB,还有IICPIOA,概率为8.3%,32.6%,和11.4%,分别。IOA轨道分支的发生率为41.7%(55/132)。
结论:3D技术可以以高分辨率绘制IOA变异,并确定IOA分支在下眼睑血管囊泡中的展开模式,作为临床实践的指导。
方法:本期刊要求作者为每篇文章分配一定程度的证据。对于这些循证医学评级的完整描述,请参阅目录或在线作者说明www。springer.com/00266.
BACKGROUND: Knowledge of the anatomy of the infraorbital artery (IOA) is crucial for the rejuvenation of the anterior medial aspect of the midface; however, studies adequately describing the anatomy of the IOA branches are lacking, and their connection with the ophthalmic artery branches remains unclear.
OBJECTIVE: This study aims to elucidate the anatomical characteristics of the IOA in its deployment within the lower eyelid using three-dimensional (3D) technology, thereby offering an anatomical foundation for clinical surgical procedures.
METHODS: An analysis was conducted on computed tomography scans of 132 cadaveric head sides post-contrast injection, utilizing the Mimics software for reconstruction. The study focused on examining the anastomosis of the IOA, its principal branches, and the branches emanating from the ophthalmic artery.
RESULTS: The prevalence of type I IOA was observed at 38.6% (51/132), while Type II IOA was found in 61.4% (81/132) of cases. A 7.6% incidence (10/132) of IOA directly anastomosing with the angular artery was noted. The presence of palpebral branches (PIOA) was identified in 57.6% (76/132) of instances. In the lower eyelid, four distinct distribution patterns of IOA were discerned: The likelihood of Type I PIOA was 5.3%, whereas for Types IIA, IIB, and IIC PIOA, the probabilities were 8.3%, 32.6%, and 11.4%, respectively. The occurrence of the orbital branch of IOA was recorded at 41.7% (55/132).
CONCLUSIONS: 3D technology can map IOA variants and identify the deployment patterns of IOA branches in the lower eyelid vascular vesicles at high resolution as a guide in clinical practice.
METHODS: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .