01. Soft tissue dissection and head orientation; Craniotomy outlines
Left sided anterior petrosal approach. Skin flap is elevated and the muslec is incised, sparing its vascular supply from deep temporal a.
Left sided anterior petrosal approach. Skin flap is elevated and the muslec is incised, sparing its vascular supply from deep temporal a.
02. Craniotomy bone flap
The bone flap is elevated and the initial craniotomy exposure presented.
The bone flap is elevated and the initial craniotomy exposure presented.
03. Dural elevation and exposure of the Meckel's cave and Gasserian Ganglion.
The dura is elevated from back to front exposing the Meckel’s cave and Gasserian Ganglion. The “true” petrous apex is presented after elevation of the Gasserian ganglion.
The dura is elevated from back to front exposing the Meckel’s cave and Gasserian Ganglion. The “true” petrous apex is presented after elevation of the Gasserian ganglion.
04. Anterior petrosectomy and exposure of the internal acoustic canal with facial nerve segments.
Anterior petrosectomy was done and the internal acoustic canal with facial nerve segments is presented. The cochlea is preserved at the cochlear angle.
Anterior petrosectomy was done and the internal acoustic canal with facial nerve segments is presented. The cochlea is preserved at the cochlear angle.
05. Carotid artery exposure.
The bone arround the GSPN was drilled exposing the petrous carotid.
The bone arround the GSPN was drilled exposing the petrous carotid.