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选用16具肛门直肠畸形儿尸体,在盆腔正中矢状断面上,观察骶椎椎体改变,骶神经的发出、及其与直肠盲端的关系。结果:1例患儿仅有三个骶椎,且第3骶椎椎体明显变小,硬脊膜终止于第三椎体下方1.5cm处,在其最低处,第4骶神经从中发出;1例第2、34椎体融合,共有一个骨化核,相当于第3椎间孔处发出一对神经;2例骶骨明显反曲,最低处硬脊膜腔扩张;2例第5骶椎无骨化核。解剖第2、3、4骶神经,从相应椎孔发出后,在中间位畸形,均有分支与直肠盲端相连,骶神经分布情况近于正常儿;在高位畸形,当直肠盲端高于骶2椎水平,骶神经与直肠无关系,当直肠盲端低于骶2椎水平时,骶神经有分支到达直肠盲端,但分布情况仍不同于正常儿。
Sixteen anus rectal malformations were selected to observe the changes of sacral vertebrae and sacral nerves in the median sagittal section of the pelvis and their relationship with the blind end of the rectum. Results: Only one patient had three sacral vertebrae, and the third sacral vertebral body became significantly smaller. The dura mater ended 1.5 cm below the third vertebral body. At its lowest point, the fourth sacral nerve elicited 1 Example 2,34 vertebral fusion, a total of a ossification nucleus, the equivalent of the third intervertebral foramen at the issue of a pair of nerves; 2 cases of significant sacral curvature, the lowest dural space expansion; 2 cases of the first 5 sacral spondylosis Ossification of the nucleus. Dissected the first 2,3,4 sacral nerve, issued from the corresponding vertebral foramen, in the median deformity, both branches and rectum blind end connected to the distribution of sacral nerve near normal children; at high deformities, when the blind side of the rectum is higher than Sacral 2 vertebral level, sacral nerve and rectum no relationship, when the rectum blind end lower than sacral 2 level, the sacral nerve branches have reached the rectum blind end, but the distribution is still different from normal children.