Effects of Facial Nerve Compression on the Stapedial Nerve

1984 ◽  
Vol 93 (3_suppl) ◽  
pp. 7-11 ◽  
Author(s):  
Yasushi Matsumoto ◽  
Shingo Murakami ◽  
Naoaki Yanagihara ◽  
Hiroshi Fujita
Keyword(s):  
Facial Nerve ◽  
Functional Recovery ◽  
Histological Finding ◽  
Average Diameter ◽  
Nerve Fibers ◽  
Factors Influencing ◽  
Stapedius Muscle ◽  
Orbicularis Oris Muscle ◽  
Stapedial Reflex ◽  
Series Of Experiments

A series of experiments on guinea pigs was conducted to determine the prognostic dependability of the stapedial reflex measurement in Bell's palsy. Comparison of the threshold of evoked electromyographic response of the stapedius muscle with that of the orbicularis oris muscle revealed that the stapedial nerve had a lower excitability than did the nerve innervating the orbicularis oris muscle. This lower excitability correlates with the histological finding that the stapedial nerve fibers have a smaller average diameter. The results indicate the resistance of the stapedial nerve to injury of the facial nerve. Functional recovery after cramping of the facial nerve tended to occur later in the stapedial nerve than in the nerve innervating the orbicularis oris muscle. The resistance of the stapedial nerve and the longer period required to recover function in this nerve were factors influencing the prognostic ambiguity of this test.

Split facial nerve course in vestibular schwannomas

2006 ◽  
Vol 105 (5) ◽  
pp. 698-705 ◽  
Author(s):  
Christian Strauss ◽  
Julian Prell ◽  
Stefan Rampp ◽  
Johann Romstöck
Keyword(s):  
Facial Nerve ◽  
Internal Auditory Canal ◽  
Nerve Fibers ◽  
Vestibular Schwannomas ◽  
Major Portion ◽  
Neurophysiological Monitoring ◽  
Nerve Preservation ◽  
Root Exit Zone ◽  
Trigeminal Root ◽  
Orbicularis Oris Muscle

Object The facial nerve in vestibular schwannomas (VSs) is located on the ventral tumor surface in more than 90% of cases; other courses are rare. A split facial nerve course with two distinct bundles has thus far been described exclusively for medial extrameatal tumors. Methods Between 1996 and 2005, 16 consecutive cases of 241 surgically treated VSs were observed to have distinct splitting of the facial nerve. The mean tumor size measured 27 mm. In one third of the cases, intrameatal tumor extension with obliteration of the fundus was documented. All patients underwent extensive intraoperative neurophysiological monitoring using multichannel electromyography recordings. Patients were reevaluated 12 months after surgery. In all 16 patients, distinct splitting of the facial nerve was demonstrated. The major portion of the facial nerve followed a typical course on the ventral tumor surface. The smaller nerve portion in all cases ran parallel to the brainstem up to the level of the trigeminal root exit zone and crossed on the cranial tumor pole to the internal auditory canal. The two nerve portions rejoined at the level of the porus acusticus. The smaller portion carried fibers exclusively to the orbicularis oris muscle, whereas the major portion supplied all three branches of the facial nerve. Conclusions In VSs, an aberrant course with distinct splitting of the facial nerve adds considerably to the surgical challenge. Long-term facial nerve results are excellent with extensive neurophysiological monitoring, which allows the differentiation and identification of aberrant facial nerve fibers and avoids additional risks to facial nerve preservation.

scholarly journals Hypoglossal-facial ‘side’-to-side neurorrhaphy combined with electrical myostimulation for facial palsy in rats

2018 ◽  
Vol 9 (1) ◽  
pp. 167-174
Author(s):  
Binbin Wang ◽  
Shiwei Wang ◽  
Song Liu ◽  
Shaodong Zhang ◽  
Dezhi Li ◽  
...  
Keyword(s):  
Facial Nerve ◽  
Motor Neurons ◽  
Functional Recovery ◽  
Rat Model ◽  
Facial Palsy ◽  
Crush Injury ◽  
Nerve Crush ◽  
Retrograde Labeling ◽  
Electrophysiological Examination ◽  
Nerve Crush Injury

Abstract Introduction This study investigated the effect of combining hypoglossal-facial nerve “side”-to-side neurorrhaphy and electrical myostimulation in a rat model of facial palsy. Methods Rats with facial nerve crush injury were subjected to control condition, monotherapy of either neurorrhaphy or electrical myostimulation, or bitherapy of the two treatments. After 1, 3, and 6 months, rats were performed the facial symmetry evaluation, electrophysiological examination and the retrograde labeling of motor neurons. Results As early as 3 months after injury, face symmetry significantly improved in rats of the bitherapy group. At 3 or 6 months after injury, either the parameters of electrophysiological examination or the number of labeled motor neurons were significantly increased in the bitherapy group than in any other group. Discussion The combination of neurorrhaphy and electrical myostimulation effectively promoted the functional recovery after facial nerve crush injury.

Nimodipine and Acceleration of Functional Recovery of the Facial Nerve After Crush Injury

2010 ◽  
Vol 12 (1) ◽  
pp. 49-52
Author(s):  
Robin W. Lindsay ◽  
James T. Heaton ◽  
Colin Edwards ◽  
Christopher Smitson ◽  
Tessa A. Hadlock
Keyword(s):  
Facial Nerve ◽  
Functional Recovery ◽  
Crush Injury

Effects of Corticosteroids on Functional Recovery and Neuron Survival After Facial Nerve Injury in Mice

2011 ◽  
Vol 13 (2) ◽  
pp. 117-124
Author(s):  
David M. Lieberman ◽  
Taha A. Jan ◽  
S. Omar Ahmad ◽  
Sam P. Most
Keyword(s):  
Facial Nerve ◽  
Nerve Injury ◽  
Functional Recovery ◽  
Facial Nerve Injury ◽  
Neuron Survival

“Large and giant vestibular schwannomas: overall outcomes and the factors influencing facial nerve function”

2020 ◽  
Author(s):  
Golda Grinblat ◽  
Manjunath Dandinarasaiah ◽  
Itzak Braverman ◽  
Abdelkader Taibah ◽  
Dario Giuseppe Lisma ◽  
...  
Keyword(s):  
Facial Nerve ◽  
Vestibular Schwannomas ◽  
Nerve Function ◽  
Facial Nerve Function ◽  
Factors Influencing

Alternative to tarsorrhaphy in peripheral facial nerve palsy with expectation of functional recovery

1984 ◽  
Vol 61 (2) ◽  
pp. 405-406 ◽  
Author(s):  
Eduardo Fernandez ◽  
Roberto Pallini ◽  
Giulio Maira
Keyword(s):  
Facial Nerve ◽  
Functional Recovery ◽  
Nerve Palsy ◽  
Simple Technique ◽  
Facial Nerve Palsy ◽  
Nerve Function ◽  
Content Type ◽  
Peripheral Facial Nerve Palsy ◽  
Opening And Closing ◽  
Fine Print

✓ A simple technique is described for protecting the cornea in patients with peripheral facial nerve palsy while waiting for recovery of nerve function. The application of an adhesive strip to the superior eyelid permits opening and closing of the eye, and provides good protection of the cornea.

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