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1.用解剖、透明、腐蚀铸型、X 线摄影以及组织学切片等方法研究了55例不同年龄的新鲜尸体腰椎骨的营养动脉。2.椎体营养动脉由椎体的腹外侧面和背侧面进入骨质,可分为伸至椎体中心的中央支和分布于椎体周围部分的周围支。椎体腹外侧营养动脉的中央支通常有1～3支,平均2.24±0.09支;椎体背侧营养动脉的中央支绝大多数为1～2支,平均1.47±0.04支,是供应椎体的主要营养动脉。周围支数目多而不恒定,由椎体腹外侧面进入的平均7.83±0.21支,由背侧面进入的平均5.67±0.11支。椎体腹外侧营养动脉的周围支随年龄的增加而明显增多;中央支随腰椎序数的增加而递减。3.中央支位于椎体中1/3平面,呈直而分支少的主干向心走行,其末梢在椎体中心部分形成螺旋状弯曲后呈树枝样分支向椎体上、下端伸展。在成人椎体内,中央支和周围支的分支都互相吻合形成动脉网栅。4.软骨区内的软骨管含有1～2条小静脉和小动脉,以及若干毛细血管和结缔组织。小动脉往往只有一支。5.椎弓营养动脉主要有:椎弓根营养动脉(84.53%±1.57),乳突营养动脉(49.45%±2.34)和椎板营养动脉(47.17%±2.17)等。6.在任何年龄的椎间盘内,特别是纤维环深层和髓核内,均未发现血管。
55 cases of fresh corpus luteal artery nutrition arteries were studied by anatomical, transparent, corrosive casting, radiography and histological sections. 2 vertebral nutrition arteries from the ventral lateral and dorsal vertebral bone into the bone, can be divided into the central branch of the vertebral body and distributed around the vertebral body surrounding the branch. The central branch of the ventral lateral nutrient artery usually has 1 to 3 branches, with an average of 2.24 ± 0.09. The majority of central branches of the dorsal nutrient artery are 1 to 2 branches, with an average of 1.47 ± 0.04, The main nutritional artery. The number of surrounding branches is rather than constant, with an average of 7.83 ± 0.21 branches from the ventral aspect of the vertebral body and 5.67 ± 0.11 branches from the dorsal aspect. The peripheral branches of the nutrient veins in the lateral ventral vertebra increased significantly with the increase of age. The central branch decreased with the increase of lumbar ordinal number. 3. The central branch in the vertebral 1/3 plane, straight and less branched trunk to the heart to walk, the tip in the central part of the vertebral body after the formation of spiral-shaped branch-like branch to the vertebral body, the lower end of the stretch. In adult vertebral bodies, the branches of the central and surrounding branches all coincide with each other to form an arterial grid. Cartilage area cartilage contains 1 to 2 small veins and arterioles, as well as a number of capillaries and connective tissue. Arteries are often only one. Pedicle feeding arteries mainly include pedicle nutritional artery (84.53% ± 1.57), mastoid nutritional artery (49.45% ± 2.34) and lamina nutritional artery (47.17% ± 2.17). No blood vessels were found in the disc at any age, especially in the deep annulus and nucleus pulposus.