Posts Tagged ‘petrosectomy’
Objective: To present a modification of this approach that allows for broader exposure with hearing preservation.
Methods: We retrospectively reviewed our clinical database between August 2007 and February 2012 for all patients who underwent a modified subtemporal partial postero-superior petrosectomy. Clinical data, complications, and post-operative head CT scans were analyzed. Improvement in the angle of view acquired by the new approach was measured using the OsiriX(R) 3-D rendering software and was compared to that obtained from the subtemporal approach. Similar methods were used to study improvement in the angle of view in head CT scans of randomly selected control patients.
Background: Jugular foramen tumors are rare and challenging lesions for skull base surgeons due to their difficult operative accessibility. Various surgical approaches to the jugular foramen have been described to overcome the morbidity of standard petrosectomy.
Objective: To describe the surgical anatomy of a novel route to the jugular foramen without opening the fallopian canal: the navigated tailored presigmoidal suprabulbar infralabyrinthine approach.
Methods: Ten cadaver heads were dissected under navigational guidance on both sides to examine the advantages and limitations of the presigmoidal suprabulbar infralabyrinthine approach without opening the fallopian canal. Mastoidectomy was performed using a high-speed drill. Under navigation guidance, the sigmoid sinus, jugular bulb, posterior semicircular canal, and fallopian canal were located and preserved. The jugular foramen with the extradural part of the IXth, Xth, and XIth nerve were identified.