Department of Anatomical Sciences, School of Medicine, St. George's University, Grenada, West Indies.
Department of Radiology, University of Florida, Gainesville, Florida, USA.
World Neurosurg. 2021 May;149:e154-e159. doi: 10.1016/j.wneu.2021.02.058. Epub 2021 Feb 20.
The inferolateral triangle is a surgical skull base triangle used as a neurosurgical landmark. There are few reports of its measurements with little attention paid to anatomic variations.
The inferolateral triangle was measured in 10 adult human cadaveric heads via dissection then direct measurement and 5 participants undergoing neuroimaging using tracing features.
In the cadavers, mean lengths (mm) of the superior, anterior, and posterior borders were 17.0 (±5.5), 12.9 (±1.7), and 17.8 (±3.3), respectively, with mean area of 97.85 (±28.17) mm. In the participants, mean lengths (mm) of the superior, anterior, and posterior borders were 17.35 (±4.01), 14.36 (±1.36), and 18.01 (±2.43), respectively, with mean area of 113.6 (±25.46) mm. No statistical difference in triangle areas between groups was found.
Intimate understanding of the inferolateral triangle is essential to skull-based surgery; knowing its anatomy and variations aids in surgical planning and understanding of regional pathology.
下外侧三角是一个用于神经外科的颅底手术标志点，关于它的测量，目前仅有少量研究报道，且这些研究大多没有关注其解剖学变异。
本研究通过对 10 具成人尸头进行解剖测量、直接测量，以及对 5 名参与者进行神经影像学追踪特征测量，对下外侧三角进行了测量。
在尸头中，上、前、后边界的平均长度（mm）分别为 17.0（±5.5）、12.9（±1.7）和 17.8（±3.3），平均面积为 97.85（±28.17）mm。在参与者中，上、前、后边界的平均长度（mm）分别为 17.35（±4.01）、14.36（±1.36）和 18.01（±2.43），平均面积为 113.6（±25.46）mm。两组间三角区面积无统计学差异。
深入了解下外侧三角对于颅底手术至关重要；了解其解剖学和变异有助于手术规划和对区域病理学的理解。
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