Anterior spinal arteries. Origin and distribution in man.
Anterior spinal arteries. Origin and distribution in man.
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脊髓前动脉。
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
J. Domènech
中科院分区：
文献类型：
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作者：
A. Rodríguez;A. Muset;M. Rodríguez;J. Domènech
这项研究旨在扩展我们目前对脊髓前动脉的起源和分布的了解，并使用 31 具动脉注射天然乳胶的人体尸体进行。得出的结论是，总是有一根或两根脊髓前动脉（右或左），从椎动脉的颅内段发出。这些动脉具有下降路线，分布到延髓的腹侧和脊髓的第一颈段。如果有两条脊髓前动脉，它们会相互吻合形成共同的、不成对的正中脊髓前动脉。脊髓前动脉起源的不同观察位置可分为三种类型。每种类型都有不同的特征：双侧起源（I 型；77.4%）、单侧起源（II 型；9.7%）和椎间横向吻合起源（III 型；12.9%）。然而，我们确实根据动脉管径将双侧起源组细分为“平衡”亚型（Ia 型；22.6%）、“右侧主导”（Ib 型；32.2%）和“左侧主导”（Ic 型；22.6%）。描述了分布在延髓腹侧面的脊髓前动脉的侧枝。
This study was designed to extend our present knowledge of the origin and distribution of anterior spinal arteries and was carried our using 31 human cadavers with arterial injections of natural latex. The conclusions reached are that there are always one or two anterior spinal arteries (right or left), which proceed from the intracranial segment of the vertebral arteries. These arteries have a descending course, with distribution into the ventral face of the medulla oblongata and the first cervical segments of the medulla spinalis. In cases where there are two anterior spinal arteries, they anastomose with each other to form the common, unpaired and median anterior spinal artery. The different observed locations of the origins of anterior spinal arteries may be systematised into three types. Each of these types has differential characteristics: bilateral origin (type I; 77.4%), unilateral origin (type II; 9.7%) and origin in an intervertebral transversal anastomosis (type III; 12.9%). We do however subdivide the bilateral origin group, according to the calibre of the arteries, into the subtypes 'balanced' (type Ia; 22.6%), 'right dominated' (type Ib; 32.2%) and 'left dominated' (type Ic; 22.6%). The collaterals of the anterior spinal arteries which distribute into the ventral face of the medulla oblongata are described.