Skull Base Surgery of the Posterior Fossa
13 this is not always a reliable landmark. The pos- terior semicircular canal is directed toward the posterior fossa and can be ...
14 Suboccipital, Telovelar The suboccipital craniotomy is one of the most common approaches in posterior fossa surgery (Fig. 1.5 ...
15 (Fig. 1.8e). The superior lip of the IAC, known as the suprameatal tubercle, may also be drilled to enlarge the ostium of Mec ...
Fig. 1.7 Retrosigmoid and far-lateral approaches. (a) Posterior view of the right retrosigmoid approach. The retrosigmoid approa ...
17 Fig. 1.8 Mastoidectomy. (a) Lateral view of the right mastoid process. The mastoid part of the temporal bone is posterior to ...
18 Further drilling of mastoid air cells uncovers the compact bone of the digastric ridge inferiorly. The fallopian (or facial) ...
Fig. 1.9 Petrosal approaches. (a) Right retrolabyrinthine approach. The posterior fossa dura is opened posterior to the semicirc ...
20 injure it with posterior retraction of the sterno- cleidomastoid muscle. The facial nerve should be identified as it exits th ...
21 Fig. 1.11 Lateral and anterolateral approaches. (a) Left subtemporal approach. The subtemporal approach requires retraction o ...
22 basilar apex as well as the midbrain and its crural and ambient cisterns [ 20 ]. Care must be taken to preserve veins project ...
23 References Rhoton AL Jr. Rhoton’s cranial anatomy and surgical approaches. 1st ed. Philadelphia: Lippincott Williams & W ...
24 Ojemann RG. Retrosigmoid approach to acoustic neuroma (vestibular schwannoma). Neurosurgery. 2001;48:553–8. Seoane E, Rhoton ...
Part II Approaches ...
© Springer International Publishing AG 2018 27 W.T. Couldwell (ed.), Skull Base Surgery of the Posterior Fossa, https://doi.org/ ...
28 the occipitomastoid suture, separating the petrous temporal bone from the occipital bone, terminating at the jugular foramen. ...
29 a complex of two to three veins that drain the lat- eral cerebellar surface before converging to insert into the petrosal sin ...
30 clamp after the body is positioned and maintain direct manual control of the head. Starting from a supine position, the patie ...
31 across the long axis of the arm to open up the angle between head and shoulders, maximizing the surgeon’s angles of attack an ...
32 maximize visualization of the cerebellopontine angle and minimize retraction on the cerebellum. For pathology that involves t ...
33 method of dural opening because of the potential of closing the dura with a running suture, we also sometimes utilize a T-sha ...
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