[…] is actually a defect in the occipital bone and rachischisis of the posterior vertebral arches leading to herniation of neural tissue. close throughout the length of the body
[sobdartho.com]
Though MRI can be used to diagnose anomalies in the fetus, it is limited [24,25].
[itmedicalteam.pl]
[…] rach- spine Greek ῥάχις, ῥάχεως (rhákhis, rhákheōs) rachipagus, rachis, rachischisis, rhachiodont, rhachis rhag-, rheg- rend, tear Greek ῥηγνύναι (rhēgnúnai). cause of the anomaly
[sobdartho.com]