The Facial Nerve, 2nd Edition. The buccal branch dividing from temporal branch of temporofacial ramus and first buccal branch dividing from cervicofacial ramus formed to first buccal plexus. The House-Brackmann designations are summarized in Table 4, below. The relationships of the temporal branch are complex and only briefly described in this article. Involvement of the facial nerve nucleus and VI nerve nucleus are suggestive of a lesion near the fourth ventricle. The former courses ventrally into the first branchial arch and terminates near a branch of the trigeminal nerve that eventually becomes the lingual nerve.
The Retroauricular Approach to the Facial Nerve Trunk. - Semantic Scholar
Identification aids in the preservation of the facial nerve by preventing inadvertent nerve section. However, the reliability of these landmarks is still one of the main concerns since there is no conclusive evidence that any one landmark is better than the rest [ 4 — 8 ]. Here, they are in very close proximity to the inner ear. Inset shows a magnified view. Just before the facial nerve emerges from the stylomastoid foramen, it generally receives a twig from the auricular branch of the vagus. New York Medical Journal, Nov. Journals that are no longer published or that have been combined with another title.
The pathways of the facial nerve are variable, and knowledge of the key intratemporal and extratemporal landmarks is essential for accurate physical diagnosis and safe and effective surgical intervention in the head and neck. Patients may have sparing of forehead function with lesions in the pontine facial nerve nucleus, with selective lesions in the temporal bone, or with an injury to the nerve in its distribution in the face. The facial motor nerves are represented on the homunculus diagram below with the forehead uppermost and the eyelids, midface, nose, and lips sequentially located more inferiorly. Written informed consent was obtained from all of the patients for publication of these cases and any accompanying images. Export a Text file For BibTex.