Investigation of 100 falx cerebri and tentorium cerebelli
Jiang, D.F.; Jia, B.L.
Chinese Medical Journal 93(2): 107-110
1980
ISSN/ISBN: 0366-6999 PMID: 6768508 Document Number: 158204
The falx cerebri and tentorium cerebelli in 100 adult cranial specimens (male 87, female 13) were examined. According to the existence and shape of the interspace between the free margins of the falx cerebri and corpus callosum, the falx cerebri is classified into 3 types. Cephalad to the corpus callosum, there is an interspace of varying size below the lower free margin of the falx cerebri. Natural defects of varying size and shape are found on the falx cerebri of the 31 specimens. Based on observation of 37 embryonic and fetal specimens, as fetal age advances the falx cerebri develops in the order from behind forwards and from above downwards, so the hind and upper portions become thick and firm while the frontal and inferior portions remain thin and soft. According to the natural shape of the incisura tentorium cerebelli, it is classified into 2 types and 4 subtypes. These discoveries may be helpful in considering the pathogenesis of those portions of the brain herniated below the falx cerebri above or below the incisura tentorium cerebelli.