Results : TVD and all 3 ventricular indices correlated excellently and highly significant (p<0.01) to the volume of the lateral ventricles (r= 0.666-0.859), the third ventricle (r=0.447-0.849) and the total internal CSF spaces (0.668-0.871).
Results : Cases of ventral tethering presented with far more neurodeficit than those with dorsal tethering, IONM changes were more in these cases as baseline deficits, and although radiological untethering was appreciable in similar percentage of cases, postoperative neurodeficit seemed to occur more in these cases though this did not reach statistical significance.
On the other hand, advantages on prognosis may be significant, especially in pediatric epilepsy and tumor surgery.
KAT III-score showed a trend to be lower post-interventionally after the second intervention.