Microsurgical anatomy of the infratentorial trabecular membranes and subarachnoid cisterns

Anatomical variations and neurosurgical significance of Liliequist’s membrane

“…Below the tentorial edge, the membrane was continuous with the arachnoid, covering the inferior aspect of the tentorium and posterior fossa dura [5]. Froelich [5] also agreed with other authors that the LM is continuous laterally with the lateral pontomesencephalic membrane [8] that separates the ambient cistern from the cerebellopontine cistern, and with the caudal oculomotor membrane [20][21][22], as they share a common embryological origin [5].…”

Cranial arachnoid membranes: Some aspects of microsurgical anatomy

“…The majority of the researches on the arachnoid membranes and the cisterns were performed by anatomists and radiologists including Gerardus Blasius, Frederick Ruysch, Axel Key, Gustaf Retzius, Liliequist, Epstein, and others (Liliequist, 1956;Epstein, 1965;Lewtas and Jefferson, 1966;Bakay, 1991;Sanan and van Loveren, 1999). Since 1976 when Yasargil established the concept of performing intracranial operations by moving from one cistern to another, the anatomy of the cisterns has been studied by several neurosurgeons including Yasargil (1976Yasargil ( , 1984, Rhoton (2000), and Dujovny (Vinas et al, 1994(Vinas et al, , 1996a. It has become the principle of the microneurosurgery to open the subarachnoid cisterns in an orderly manner so as to gain a natural pathway through which most operations can be performed noninvasively.…”

“…The study of the arachnoid membranes has been restricted to the membrane now called Liliequist's membrane (Epstein, 1965;Buxton et al, 1998;Fushimi et al, 2003), although Dujovny and his colleagues (Vinas et al, 1994(Vinas et al, , 1996a described the compartmental trabecular membranes in 1994 and 1996. It is a matter for regret that the anatomy of the arachnoid membranes has not been studied in detail.…”

Reinvestigation of the ambient cistern and its related arachnoid membranes: an anatomical study

“…Various descriptions of the ambient cistern can be found in the literature, 1,3,[5][6][7][8]12,15,[16][17][18][19][20][21][22] and the anatomy of neurovascular structures in this region has been well il-lustrated. However, only few microscopic studies of the arachnoid membranes related to the ambient cistern have been published, 8,12,18 and in most studies the ambient cistern was considered to be a cistern extending across the tentorial incisura.…”

“…However, only few microscopic studies of the arachnoid membranes related to the ambient cistern have been published, 8,12,18 and in most studies the ambient cistern was considered to be a cistern extending across the tentorial incisura. 1,3,6,7,[18][19][20] Based on the literature we have reviewed, several questions need to be further investigated. Does the ambient cistern really extend across the tentorial incisura?…”