Low W K, Fenton J E, Fagan P A, Gibson W P
ENT Department, Royal Prince Alfred Hospital, Sydney, Australia.
Acta Otolaryngol. 1995 Nov;115(6):783-6. doi: 10.3109/00016489509139402.
Racial differences in the size, shape and structure of the cranium exist. This paper evaluates the importance of race in influencing the required sizes of craniotomies for gaining access to the lateral end of the internal auditory meatus without breaching the labyrinth via the retrosigmoid approach. Fine-cut CT scans of the temporal bones (axial cuts) of 34 Chinese and 34 Europeans were studied. The relevant distances and angles of the posterior cranial fossa and temporal bone were measured and statistically significant differences between the two races were found. This led us to the conclusion that a larger craniotomy is required in Europeans than in Chinese. In recommending an optimal size for a retrosigmoid craniotomy to remove acoustic neuromas completely and preserve hearing, the racial factor must be considered.
颅骨在大小、形状和结构上存在种族差异。本文评估了种族因素对于经乙状窦后入路进入内耳道外侧端而不穿破迷路所需开颅大小的影响。研究了34名中国人和34名欧洲人的颞骨（轴位切面）高分辨率CT扫描图像。测量了后颅窝和颞骨的相关距离和角度，发现两个种族之间存在统计学上的显著差异。由此我们得出结论，欧洲人所需的开颅比中国人更大。在推荐乙状窦后开颅的最佳大小以完全切除听神经瘤并保留听力时，必须考虑种族因素。
