A study of the cerebral venous drainage patterns in craniosynostosis: nonsyndromic cases and the induction effect of Virchow’s law on venous sinuses

A significantly higher predominance of left TS was found in RCS cases, in contrast with the typical right-side predominance seen in the normal population. In addition, the majority of UCS cases exhibited TS dominance on the opposite side of the synostotic suture. Furthermore, the present results showed a significant difference in the prevalence of OS, which was predominantly observed in BCS cases. These findings could be explained by the induction effect on venous sinuses by the compensatory growth of the skull according to Virchow's law, suggesting that synostotic sutures induce compensatory skull expansion in regions farthest (diagonally) from the affected sutures, thereby enlarging nearby venous sinuses.