[Anatomo-experimental basis for tentorial-sinus autoplasty].

The histotoprographical features of the upper and lower sheets of the cerebellar tentorium are determined and the anatomical characteristic of their neurovascular structures is given. A method for separating the sheets of the cerebellar tentorium and forming from its upper sheet rectangular pedicled autografts facing the transverse or straight sinus, the superior petrosal sinus and the sinus drain was elaborated on human cadavers. Optimum dimensions of the temporal graft were calculated according to age and individual range of variability of the size of each half of the cerebellar tentorium. Three methods of tentorial autoplasty of the transverse sinus were used in the experiment: monograft, bigraft and total plastics of the resected sinus segment.