Skull Base Surgery of the Posterior Fossa

56 lost functional hearing, a total petrosectomy (with drilling of the labyrinth and sometimes cochlea) can be considered. Post ...

57 Skin Incision and Craniotomy The skin incision is made starting from the zygo- matic arch approximately 1 cm anterior to the ...

58 the jugular bulb and expose the presigmoid dura (Figs. 4.2 and 4.6). The mastoid cortex is removed en bloc prior to starting ...

59 Fig. 4.3 The dural opening are shown. Linear dural openings are made along the floor of the middle fossa (TD) as well as in t ...

60 SCM and retracted. The zygomatic arch is exposed, and osteotomies are made along the root of the zygoma and as anterior as po ...

61 Surgical resection of previously radiated tumors carries increased risk of neurovascular injury. At all times sharp dissectio ...

62 Conclusion The posterior petrosal and combined petrosal approaches are important neurosurgical routes that provide excellent ...

63 Neurochirurgica Supplementum (Wien). Austria. Springer Science + Business Media; 1991;53:166–70. Kawase T, Shiobara R, Toya ...

© Springer International Publishing AG 2018 65 W.T. Couldwell (ed.), Skull Base Surgery of the Posterior Fossa, https://doi.org/ ...

66 Early warning of neurologic compression, retrac- tion, or ischemic injury can be provided by elec- trophysiologic monitoring ...

67 rior are released. These latter two muscles, along with the obliquus capitis inferior, form the suboccipital triangle, which ...

68 arch. Electrocautery should be avoided when dis- secting in the lower suboccipital area, as a sharp inadvertent arteriotomy i ...

69 dylar fossa (Fig. 5.3e). Exposure of the emis- sary vein denotes the lateral limit of the basic far lateral approach (Figs. 5 ...

70 The occipito-transcondylar variant is readily incorporated into the basic far lateral approach, extending the removal of bone ...

71 protrusion of the jugular tubercle may limit ante- rior exposure, and in the manner that removal of the occipital condyle pro ...

72 Intradural Exposure The dura is opened as an inverted-U with the medial limb extending inferiorly across the fora- men magnum ...

73 (Table 5.2). The basic far lateral exposure may often be sufficient to access lesions along the anterolateral margin of the f ...

© Springer International Publishing AG 2018 75 W.T. Couldwell (ed.), Skull Base Surgery of the Posterior Fossa, https://doi.org/ ...

76 Nevertheless, the EEA cannot be used to treat the most common posterior fossa schwannomas that arise from CN VIII based on th ...

77 The intracranial surface of the upper two thirds of the clivus faces the pons and is concave from side to side. The extracran ...