Abstract：
BACKGROUND: The anterolateral triangle around the cavernous sinus is a surgical skull base triangle used as a neurosurgical landmark essential to skull-based surgeries. There are few reports of its measurements with little attention paid to anatomical variations.
METHODS: A total of 15 adult human cadaveric skulls were dissected to expose the anterolateral triangle on both sides. The triangle was defined and measurements of the three borders were taken precisely and the area of each triangle was calculated using Heron\'s formula.
RESULTS: On an average, the length of the anteromedial border is 11.4 (+ 2.2 mm); the length of the posteromedial border is 8.7 (+ 2.6 mm); the length of the lateral border is 13.06 (+ 2.6 mm) and the area of the anterolateral triangle is 48.05 (+ 17.5 mm2).
CONCLUSIONS: Concise understanding of anterolateral triangle is essential to skull-based surgeries; comprehending its anatomy helps with better surgical planning and provides insight into local pathology.
METHODS: A total of 15 adult human cadaveric skulls were dissected to expose the anterolateral triangle on both sides. The triangle was defined and measurements of the three borders were taken precisely and the area of each triangle was calculated using Heron\'s formula.
RESULTS: On an average, the length of the anteromedial border is 11.4 (+ 2.2 mm); the length of the posteromedial border is 8.7 (+ 2.6 mm); the length of the lateral border is 13.06 (+ 2.6 mm) and the area of the anterolateral triangle is 48.05 (+ 17.5 mm2).
CONCLUSIONS: Concise understanding of anterolateral triangle is essential to skull-based surgeries; comprehending its anatomy helps with better surgical planning and provides insight into local pathology.
摘要：
背景：海绵窦周围的前外侧三角形是外科颅底三角形，用作颅骨手术所必需的神经外科标志。很少有关于其测量的报道，很少注意解剖变化。
方法：共解剖了15个成人尸体头骨，以暴露两侧的前外侧三角形。定义三角形，并精确测量三个边界，并使用Heron公式计算每个三角形的面积。
结果：平均而言，前内侧边界的长度为11.4（2.2毫米）；后内侧边界的长度为8.7（2.6毫米）；侧边界的长度为13.06（2.6毫米），前外侧三角形的面积为48.05（17.5平方毫米）。
结论：对前外侧三角的精确理解对于颅骨手术至关重要；理解其解剖结构有助于更好的手术计划，并提供对局部病理学的了解。
方法：共解剖了15个成人尸体头骨，以暴露两侧的前外侧三角形。定义三角形，并精确测量三个边界，并使用Heron公式计算每个三角形的面积。
结果：平均而言，前内侧边界的长度为11.4（2.2毫米）；后内侧边界的长度为8.7（2.6毫米）；侧边界的长度为13.06（2.6毫米），前外侧三角形的面积为48.05（17.5平方毫米）。
结论：对前外侧三角的精确理解对于颅骨手术至关重要；理解其解剖结构有助于更好的手术计划，并提供对局部病理学的了解。
