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脊髓脊膜膨出是由于胚胎期神经轴中胚叶发育缺陷、神经管闭合不全形成脊柱裂所致。它常合并脊髓圆锥下移 ,终丝粗大、短缩 ,尤以骶尾部巨大型脊髓脊膜膨出发生率高。所以此类患儿出生时多已合并脊髓栓系的症状 ,如果在一期修补术的同时 ,采取游离骶囊的方法 ,切断外终丝 ,松解
Myelomeningocele is due to embryonic nerve axis midbrain development defects, neural tube insufficiency due to spina bifida. It is often associated with spinal conical down, the terminal filament thick, shortening, especially in the sacrococcygeal giant meningocele high incidence. Therefore, such children born at the merger of spinal cord tethered symptoms, if a repair at the same time, to take the method of free sac sac, cut off the outer end filament, release