Comparative morphometric study of the sigmoid sinus sulcus and the jugular foramen.

OBJECTIVE To compare the right and left sides of the same skulls as far as the described landmarks are concerned, and establish the craniometric differences between them. METHOD We carried out measurements in 50 adult dry human skulls comparing both sides. RESULTS The sigmoid sinus width at the sinodural angle level was larger on the right side in 78% of the cases and at the level of the digastric notch in 72%. The jugular foramen width was also larger on the right side in 84% of the cases. The sigmoid sinus distance at the level of the digastric notch was larger on the right side in 64% of the cases, and the sigmoid sinus distance at the level of the digastric notch to the jugular foramen was larger on the right side in 70% of the cases. CONCLUSION Significant craniometric differences were found between both sides of the same skulls.