摘要
本文用综合血管造影法(铅丹X线造影及墨汁透明标本)并借助肉眼及手术显微镜观察了20例胎儿坐骨神经的血液供应。1.坐骨神经有外血管系和内血管系两部分(以神经束膜为界);2.坐骨神经外血管系呈节段性、多源性,主要来自神经营养动脉、肌支及从动脉直接发出的小分支;3.坐骨神经内血管系是由微细血管和毛细血管组成的吻合网,非常丰富,是临床上游离一段坐骨神经后,保证神经供血的形态学依据。
The blood supply and source about the sciatic nerve in 20 fetuses were studied. We observed the number and diameter of the branches of blood vessels and the size, characteristic distribution of the network formed from them, microscopically and by naked eye. A combined angiography was used. After injection of Chinese ink the epineuria were peeled. About the vascular distribution of the nerve tract we perceived that:
1. The blood supply of the sciatic nerve was from two vascular systems——external and internal (separated by the perineurium); 2. The external part showed segmental of multiple origination, mainly from the nutrition arteries, and some arterioles directly from the sciatic arteries. The number, diameter, branching type of the vessels, size and shape of the anastomosing network were also observed; 3. The internal part consisted of microarteries and capillaries, which form an anastomosing network. The diameter of the vessels, shape and size of the network were measured.
In view of the above-mentioned data, when a part of the sciatic nerve should be isolated, the clinical physicians ought to consider the blood supply in segmental character, so that the part of nerve taken off must not be too long to avoid injuring the nutritional vessels.
出处
《解剖学报》
CAS
CSCD
北大核心
1990年第2期126-129,共4页
Acta Anatomica Sinica
关键词
坐骨神经
血管
解剖
Blood vessels
Sciatic nerve
Combined angiography
Applied anatomy
