Correspondence Address : Prof. Course of the facial nerve through the temporal bone is known for variations, the commonest being dehiscence of the bony fallopian canal. It is common to have dehiscence of the horizontal tympanic segment; however, complete dehiscence of the vertical mastoid segment is very rare.
In group 2, electron miscroscopy shows a large number of myelinated axons in extratemporal segments of facial nerve following geniculate ganglionectomy. There were fewer myelinated axons than were found on the control side. Arch Otolaryngol Head Neck Surg.
Figure 1. Schematic showing facial nerve decompression. Panel A shows a normal facial nerve within the Fallopian canal of the temporal bone.
It emerges from the pons of the brainstemcontrols the muscles of facial expression, and functions in the conveyance of taste sensations from the anterior two-thirds of the tongue. It arises from the brainstem from an area posterior to the cranial nerve VI abducens nerve and anterior to cranial nerve VIII vestibulocochlear nerve. The facial nerve also supplies preganglionic parasympathetic fibers to several head and neck ganglia.
Diagnosis of the lesions of the tumor is difficult, as these tumors have relationships with other structures of the lateral skull base, such as nerves. In addition, surgical treatment is difficult because the risk of injury after the intervention is high. In this case report, we describe the clinical findings, diagnosis, and treatment of a year-old man with facial nerve neuroma in the mastoid portion, a rare type of neuroma who underwent surgical operation at Khalili Hospital, Shiraz, Iran.
Branchial motor innervation to muscles of facial expression including orbicularis oculi, orbicularis oris, zygomaticus major, levator anguli oris, risorius, depressor anguli oris, mentalis, buccinator, frontalis, occipitalis, corrugator supercilii, and platysmastapedius, stylohyoid, and posterior belly of digastric. Visceral motor parasympathetic innervation to lacrimal gland via greater superficial petrosal nerve; GSPNoral and nasal mucosa via GSPNand submandibular and sublingual glands via chorda tympani. Somatic sensory from external auditory meatus, auricle and retroauricular area.
Introduction: In cases of partial lesions on intratemporal segment of facial nerve, should surgeon chose intraoperative way for partial reconstruction or partially remove injured segment and place graft? Objective: To present results from partial lesion reconstruction on intratemporal segment of facial nerve. Method: A retrospective study on 42 patients, between andwho presented partial lesion on intratemporal segment of facial nerve.
JanuaryCite as. Facial nerve is known to have a considerable variations more so in the temporal bone. An otologist with inadequate familiarity with facial nerve usually have a tendency to do incomplete surgery in chronic suppurative otitis media. The present study was conducted to explore the microanatomy of tympanic and mastoid segments of facial nerve.
The ideal animal model for nerve regeneration studies is the object of controversy, because all models described by the literature have advantages and disadvantages. To describe the histologic and functional patterns of the mandibular branch of the facial nerve of Wistar rats to create a new experimental model of facial nerve regeneration. Forty-two male rats were submitted to a nerve conduction test of the mandibular branch to obtain the compound muscle action potential.
The Brazilian Journal of Otorhinolaryngology publishes original contributions in otolaryngology and the associated areas cranio-maxillo-facial surgery, head and neck surgery, and phoniatrics. The aim of this journal is the national and international divulgation of the scientific production interesting to the otolaryngology, as well as the discussion, in editorials, of subjects of scientific, academic and professional relevance. It is the official scientific publication of the Brazilian Association of Otolaryngology and Cervicofacial Surgery.