rachischisis

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rachischisis

 [rah-kis´kĭ-sis]
congenital fissure of the spinal column; see also spina bifida.
rachischisis poste´rior spina bifida.

ra·chis·chi·sis

(rā-kis'ki-sis),
1. Embryologic failure of fusion of vertebral arches and neural tube with consequent exposure of neural tissue at the surface; spina bifida cystica with myelocele or myeloschisis.
2. Spinal dysraphism.
[G. rhachis, spine, + schisis, division]

ra·chis·chi·sis

(ră-kis'ki-sis)
1. Embryologic failure of fusion of neural arches and neural tube with consequent exposure of neural tissue at the surface; spina bifida cystica with myelocele or myeloschisis.
2. Spinal dysraphism.
[G. rhachis, spine, + schisis, division]