The bony facial canal is an integral part of the pars petrosa throughout its entire course. This applies to its embryologic development and to its surgical anatomy. Therefore, the conclusion may be accepted that it is closely related to pathologic changes in this portion of the temporal bone. In this presentation the term descending bony facial canal is construed to be that portion between the external semicircular canal and the stylomastoid foramen. Some criticism may be engendered by so limiting this area. In apology it may be said that the observations as presented, with their clinical and surgical conclusions, are based on observations limited to this portion of the canal and contiguous structures.
The internal aspect of the bony canal is the anatomic pathway to the bony area of the bulb and the inferior surface of the petrosal pyramid. Its cellular character is similar, varying in direct
ZIEGELMAN EF. DESCENDING BONY FACIAL CANAL IN RELATION TO COMPLICATIONS OF MASTOIDECTOMY. Arch Otolaryngol. 1935;21(5):542–546. doi:10.1001/archotol.1935.00640020556005
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