====== Petrous part of the temporal bone ======

The posterior surface of the petrosal portion of the [[temporal bone]] is the back side of the [[Petrous part of the temporal bone]], which is a complex and compact bone located in the skull. The petrous portion of the temporal bone is involved in the formation of the base of the [[skull]] and is adjacent to the middle and [[inner ear]] structures. The posterior surface of the petrosal portion of the [[temporal bone]] is relatively flat and forms part of the [[posterior cranial fossa]]. It is separated from the [[occipital bone]] by the [[sigmoid sulcus]] and is in close proximity to the [[sigmoid sinus]] and [[internal auditory canal]], which contain important structures such as the [[facial nerve]] and [[cochlea]]. Knowledge of the anatomy of the posterior surface of the petrosal portion of the temporal bone is important for a range of clinical applications, including [[skull base surgery]] and middle ear surgery.
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see [[Petrous bone]]