Department of Neurological Surgery, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53792, USA.
Clin Anat. 2013 Sep;26(6):667-74. doi: 10.1002/ca.22277. Epub 2013 Jun 27.
The subparietal and parietooccipital sulci are both located on the medial surface of the brain. Both of these sulci reveal significant variability in pattern and complexity. Both subparietal and parietooccipital sulci play an important role as surgical landmarks using posterior interhemispheric parietooccipital approach to lesions located adjacent to the ventricular trigon deep to the cingulate gyrus. The aim of this study is to analyze variations in the patterns of the subparietal and parietooccipital sulci and to emphasize their surgical importance. Fifty-six formalin-fixed cadaveric cerebral hemispheres from 28 adult humans are examined. Subparietal and parietal sulci patterns, variations and their relationship with the cingulate sulcus are studied according to the terminology introduced by Ono et al. The H-pattern was observed in 50% (n = 28) of all hemispheres, being the most common pattern of the subparietal sulcus. The Straight pattern was observed in the 30.4% (n = 17) of all hemispheres, being the most common pattern of the parietooccipital sulcus. Furthermore, more detailed results among the patterns, connections, side branches and the relationship with the adjacent sulci are given. Our study further confirms the complexities in the patterns of the subparietal and parietooccipital sulci and demonstrates that these sulci fall within an expected range of variations. Better knowledge of these variations will further help neurosurgeons to navigate easily during approaches involving the medial surface of the parietal lobe. Clin. Anat. 26:667-674, 2013. © 2013 Wiley Periodicals, Inc.
顶下沟和顶枕沟均位于大脑的内侧面。这两条脑沟在形态和复杂程度上都存在显著的变异性。在经胼胝体下回顶枕部入路中，顶下沟和顶枕沟对于临近侧脑室三角区且位于扣带回深面的病变来说，是重要的手术标志。本研究旨在分析顶下沟和顶枕沟的形态变化，并强调其手术重要性。我们对 28 例成人的 56 例福尔马林固定的大脑半脑进行了检查。根据 Ono 等人提出的术语，研究了顶下沟和顶枕沟的模式、变异及其与扣带沟的关系。我们发现，在所有半脑的 50%（n = 28）中观察到 H 型模式，这是顶下沟最常见的模式。在所有半脑的 30.4%（n = 17）中观察到直型模式，这是顶枕沟最常见的模式。此外，我们还给出了更详细的模式、连接、侧支以及与相邻脑沟关系的结果。我们的研究进一步证实了顶下沟和顶枕沟形态的复杂性，并表明这些脑沟在预期的变异范围内。更好地了解这些变化将进一步帮助神经外科医生在涉及顶叶内侧面的入路中轻松导航。临床解剖学 26:667-674, 2013。©2013 Wiley Periodicals, Inc.
