Nedelcu Alin Horatiu, Lupu Vasile Valeriu, Lupu Ancuta, Tepordei Razvan Tudor, Ioniuc Ileana, Stan Cristinel Ionel, Vicoleanu Simona Alice Partene, Haliciu Ana Maria, Statescu Gabriel, Ursaru Manuela, Danielescu Ciprian, Tarniceriu Cristina Claudia
Department of Morpho-Functional Science I, Discipline of Anatomy, "Grigore T. Popa" University of Medicine and Pharmacy, Iasi, Romania.
Department of Mother and Child, "Grigore T. Popa" University of Medicine and Pharmacy, Iasi, Romania.
Front Neuroanat. 2024 Jul 29;18:1398858. doi: 10.3389/fnana.2024.1398858. eCollection 2024.
The triangular recess (TR), also called triangular fossa or represents the anterior extension of the diencephalic ventricle, located between the anterior columns of the fornix and the anterior white commissure. Over time, this structure of the third cerebral ventricle generated many disputes. While some anatomists support its presence, others have opposite opinions, considering that it only becomes visible under certain conditions. The aim of the study is to demonstrate the tangible structure of the triangular recess. Secondly, the quantitative analysis allowed us to establish an anatomical morphometric standard, as well as the deviations from the standard.
Our study is both a quantitative and a qualitative evaluation of the triangular fossa. We dissected 100 non-neurological adult brains, which were fixed in 10% formaldehyde solution for 10 weeks. The samples are part of the collection of the Institute of Anatomy, "Grigore T. Popa" University of Medicine and Pharmacy, Iasi. We highlighted the triangular fossa by performing dissections in two stages at the level of the roof of the III ventricle.
The qualitative analysis is a re-evaluation of the classical data concerning the anatomy of the fossa triangularis. We proposed an original 3D model of the triangular recess in which we described a superficial part called vestibule and a deep part called . We measured the sides of the communication between the two proposed segments, as well as the communication with the III ventricle. By applying the Heron's formula, we calculated the area of the two communications. Statistical evaluations have shown that these communications are higher than they are wide. In addition, there is a statistical difference between the surfaces of the two communications: 34.07 mm ± 7.01 vs. 271.43 mm ± 46.36 ( = 0.001).
The outcome of our study is both qualitative and quantitative. Firstly, we demonstrated the existence of the triangular fossa and we conceived a spatial division of this structure. Secondly, the measurements carried out establish an anatomo-morphometric norm of the triangular recess, which is useful in assessing the degree of hydrocephalus during the third endoscopic ventriculoscopy.
三角隐窝（TR），也称为三角窝，代表间脑室的前部延伸，位于穹窿前柱和前白连合之间。随着时间的推移，第三脑室的这个结构引发了许多争议。一些解剖学家支持其存在，而另一些人则持相反观点，认为它仅在某些条件下才可见。本研究的目的是证明三角隐窝的实体结构。其次，定量分析使我们能够建立解剖形态计量标准以及与标准的偏差。
我们的研究是对三角窝进行定量和定性评估。我们解剖了100例非神经科成年大脑，这些大脑在10%甲醛溶液中固定10周。这些样本是雅西“格里戈尔·T·波帕”医科大学解剖学研究所藏品的一部分。我们通过在第三脑室顶部水平分两个阶段进行解剖来突出显示三角窝。
定性分析是对有关三角窝解剖的经典数据的重新评估。我们提出了一个三角隐窝的原始三维模型，其中我们描述了一个称为前庭的浅表部分和一个称为[此处原文缺失]的深部部分。我们测量了两个提议部分之间连通处的边长以及与第三脑室的连通处边长。通过应用海伦公式，我们计算了这两个连通处的面积。统计评估表明，这些连通处的长度大于宽度。此外，这两个连通处的表面积之间存在统计学差异：34.07平方毫米±7.01与271.43平方毫米±46.36（P = 0.001）。
我们研究的结果既有定性的也有定量的。首先，我们证明了三角窝的存在，并构思了该结构的空间划分。其次，所进行的测量建立了三角隐窝的解剖形态计量标准，这在评估第三次内镜脑室镜检查期间的脑积水程度时很有用。
