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Facial nerve dissection

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https://www.readbyqxmd.com/read/29322603/the-nerve-supply-of-zygomaticus-major-variability-and-distinguishing-zygomatic-from-buccal-facial-nerve-branches
#1
A Kehrer, S Engelmann, R Bauer, C Taeger, S Grechenig, M Kehrer, L Prantl, E Tamm, Rlaw Bleys, V Mandlik
INTRODUCTION The zygomaticus major (ZM) is important for the human smile. There are conflicting data about whether the zygomatic or buccal branches of the facial nerve are responsible for its motor innervation. The literature provides no precise distinction of the transition zone between these two branch systems. In this study, a definition to distinguish the facial nerve branches at the level of the body of the zygoma is proposed. In the light of this definition, we conducted an anatomical study to determine how the source of innervation of the ZM was distributed...
January 11, 2018: Clinical Anatomy
https://www.readbyqxmd.com/read/29301803/extramedullary-plasmacytoma-rare-neoplasm-of-parotid-gland
#2
Sehrish Abrar, Nasir Ali, Bilal Mazhar Qureshi, Ahmed Nadeem Abbasi
A 45-year-old man presented with left-sided facial swelling. Initial excisional biopsy was done somewhere else without prior imaging and it came out to be pleomorphic adenoma; local imaging after biopsy showed mass over the left parotid gland with ipsilateral lymphadenopathy. On examination, there was a well-circumscribed mass with signs of left facial nerve palsy. He underwent left radical parotidectomy with ipsilateral modified radical neck dissection, and per operatively, it came out to be neoplastic lesion...
January 4, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29288394/endoscopic-transorbital-route-to-the-petrous-apex-a-feasibility-anatomic-study
#3
Alberto Di Somma, Norberto Andaluz, Luigi Maria Cavallo, Thomaz E Topczewski, Federico Frio, Rosa Maria Gerardi, Jose Pineda, Domenico Solari, Joaquim Enseñat, Alberto Prats-Galino, Paolo Cappabianca
BACKGROUND: While the subtemporal approach represents the surgical module milestone designed to reach the petrous apex, a novel ventral route, which is the superior eyelid endoscopic transorbital approach, has been proposed to access the skull base. Accordingly, we aimed to evaluate the feasibility of this route to the petrous apex, providing a qualitative and quantitative analysis of this relatively novel pathway. METHODS: Five human cadaveric heads were dissected at the Laboratory of Surgical NeuroAnatomy of the University of Barcelona...
December 29, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29283098/electrophysiological-and-histopathological-evaluation-of-effects-of-sodium-2-mercaptoethanesulfonate-used-for-middle-ear-surgery-on-facial-nerve-functions
#4
Oğuz Kadir Eğilmez, Numan Kökten, Mustafa Baran, M Tayyar Kalcıoğlu, Işın Doğan Ekici, Muhammet Tekin
OBJECTIVE: Sodium-2-mercaptoethanesulfonate (MESNA) is widely used in medicine because of its antioxidant and mucolytic effects. In recent years, it has been used in otologic surgery. Because it cleaves disulfide bonds, it is used to easily dissect the epithelial matrix in cholesteatoma and atelectasis. In this study, we hypothesized that MESNA does not have any toxic effect on the facial nerve, and the effects of MESNA on the facial nerve were examined histologically and electrophysiologically...
December 14, 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29246390/the-extent-of-surgery-for-benign-parotid-pathology-and-its-influence-on-complications-a-prospective-cohort-analysis
#5
Wai Keat Wong, Subhaschandra Shetty
BACKGROUND: The surgical management of benign parotid tumors is aimed at complete extirpation of the mass with preservation of facial nerve function. There is a relative paucity of literature pertaining to complications after benign parotid surgery and related risk factors. We aim to critically review the outcomes following treatment of benign parotid pathology when surgery entailed either complete superficial parotidectomy (CSP), partial superficial parotidectomy (PSP) or extracapsular dissection (ECD)...
November 29, 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/29243182/the-facial-nerve-anatomy-and-associated-disorders-for-oral-health-professionals
#6
Kojiro Takezawa, Grant Townsend, Mounir Ghabriel
The facial nerve, the seventh cranial nerve, is of great clinical significance to oral health professionals. Most published literature either addresses the central connections of the nerve or its peripheral distribution but few integrate both of these components and also highlight the main disorders affecting the nerve that have clinical implications in dentistry. The aim of the current study is to provide a comprehensive description of the facial nerve. Multiple aspects of the facial nerve are discussed and integrated, including its neuroanatomy, functional anatomy, gross anatomy, clinical problems that may involve the nerve, and the use of detailed anatomical knowledge in the diagnosis of the site of facial nerve lesion in clinical neurology...
December 14, 2017: Odontology
https://www.readbyqxmd.com/read/29226469/surgical-anatomy-of-the-superficial-temporal-artery-to-prevent-facial-nerve-injury-during-arterial-biopsy
#7
Kang-Jae Shin, Hyun Jin Shin, Shin-Hyo Lee, Ki-Seok Koh, Wu-Chul Song
PURPOSE: To investigate the topographical relationship between the frontal branch of the superficial temporal artery (FSTA) and the temporal branch of the facial nerve (TFN) with the aim of preventing nerve injury during FSTA biopsy. METHODS: Fifty-seven hemifaces of 33 cadavers were dissected. Vertical lines drawn to the lateral orbital margin (LOM) and the superior root of the helix were used as the anterior and posterior reference positions, respectively. Horizontal lines drawn through the supraorbital margin and lateral canthus were used as the superior and inferior reference points, respectively...
December 11, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/29192065/peripheral-nerve-function-estimation-by-linear-model-of-multi-cmap-responses-for-surgical-intervention-in-acoustic-neuroma-surgery
#8
Dilok Puanhvuan, Sorayouth Chumnanvej, Yodchanan Wongsawat
Nerve function assessments are crucial for surgical intervention during acoustic neuroma surgery. Cranial nerves such as acoustic and facial nerves, can be possibly damaged during tumor dissection. Proper surgical intervention should prevent neurological deficit and achieve total tumor removal. Conventionally, nerve function is qualitatively evaluated by surgeon and neurologist. Facial nerves can be preserved by monitoring the compound muscle action potential (CMAP) response. The differences in the amplitude and latency of CMAP are used as indicators during surgical interventions...
December 2017: Physiological Reports
https://www.readbyqxmd.com/read/29191541/subtemporal-interdural-surgical-approach-for-giant-facial-nerve-neurinomas
#9
Atul Goel, Shashi Ranjan, Abhidha Shah, Survendra Rai, Sandeep Gore, Pralhad Dharurkar
OBJECTIVE: The management issues of 15 cases of giant and dumbbell shaped facial neurinomas that extended both in the middle and in the posterior cranial fossa is reported. MATERIAL AND METHODS: During the period 2002 to June 2017, 15 cases of giant and dumbbell shaped facial neurinomas were surgically treated. There were 10 males and 5 females and their ages ranged from 17 to 59 years (average 34.2 years). Average duration of facial nerve weakness prior to seeking surgical relief was 49...
November 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29168108/the-malaris-muscle-its-morphological-significance-for-sustaining-the-intraorbital-structures
#10
Natnicha Kampan, Masahiro Tsutsumi, Itsuko Okuda, Hisayo Nasu, Mi-Sun Hur, Kumiko Yamaguchi, Keiichi Akita
The orbicularis oculi muscle, an important mimetic muscle, was investigated to ascertain its anatomical relation to facial aging-especially its orbital part (Oo). Previous studies of the distinct muscle bundles frequently found inferior to the Oo have provided various definitions, including that of the malaris muscle. This study aimed to examine these muscle bundles and clarify their function in facial aging. Twelve heads of Japanese cadavers (average age: 82.5 years old) were dissected to observe the muscles, focusing in particular on those in the periorbital region...
November 22, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/29127505/high-resolution-ultrasonography-of-the-normal-extratemporal-facial-nerve
#11
Hannes Wegscheider, Gerd Fabian Volk, Orlando Guntinas-Lichius, Bernhard Moriggl
The technical advances in sonography of the past decade have supported the rapid improvement of high-resolution imaging, which enables the quick visualization of peripheral nerves at relatively limited costs. Recently, the possibility of visualizing the extratemporal facial nerve (FN) has been considered. This manuscript describes the first systematic evaluation in cadavers, of a novel ultrasonographic approach with this specific aim. Eight cadaveric hemifaces were evaluated by means of high-frequency ultrasound with two linear (13 and 22 MHz) and a convex transducer (6...
November 10, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29122337/study-of-anatomical-variations-of-the-zygomaticofacial-foramen-and-calculation-of-reliable-reference-points-for-operation
#12
A Ferro, S Basyuni, C Brassett, V Santhanam
Dissection on to the facial aspect of the zygoma is common in procedures of the midface for trauma, craniofacial deformity, and cosmesis. These procedures carry the risk of injury to the neurovascular structures that exit from the zygomaticofacial foramen (ZFF). The purpose of this study was to map the ZFF, and to establish reliable reference points from which to identify it before and during operation. We also aimed to compare the anatomy of the ZFF between sexes and among geographical populations. A total of 429 adult skulls from nine geographical sites were used...
November 6, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29111474/the-middle-temporal-artery-surgical-anatomy-and-exposure-for-cerebral-revascularization
#13
Roberto Rodriguez Rubio, Michael T Lawton, Olivia Kola, Halima Tabani, Sonia Yousef, Ali Tayebi Meybodi, Jan-Karl Burkhardt, Ivan El-Sayed, Arnau Benet
BACKGROUND: The middle temporal artery (MTA) is the proximal medial branch of the superficial temporal artery (STA), supplying the temporalis muscle along with deep temporal arteries. Its use in vascularized flaps for reconstructive and otologic procedures has been described, yet its potential use in neurosurgery has not been studied. We report a novel technique for exposing the MTA and evaluated its characteristics for extracranial-intracranial cerebrovascular bypass. METHODS: After a curvilinear frontotemporal incision in 10 cadaveric specimens, the STA was dissected from distal to proximal...
October 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29104153/anatomic-study-of-extracranial-needle-trajectory-using-hartel-technique-for-percutaneous-treatment-of-trigeminal-neuralgia
#14
Joe Iwanaga, Filippo Badaloni, Tyler Laws, Rod J Oskouian, R Shane Tubbs
OBJECTIVE: The aim of this study was to describe the anatomic trajectory of the extracranial needle for percutaneous rhizotomy and correlate this with structures at risk during such a procedure. METHODS: Six sides from 3 frozen fresh Caucasian heads were used in this study. Hartel anatomic landmarks for percutaneous trigeminal rhizotomy procedures were used. A free hand technique was then used, and intraprocedural visualization of the needle was performed with fluoroscopy...
November 22, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29102739/the-role-of-125-i-interstitial-brachytherapy-for-inoperable-parotid-gland-carcinoma
#15
Ming-Wei Huang, Wen-Jie Wu, Xiao-Ming Lv, Guang-Yan Yu, Jian-Guo Zhang
PURPOSE: The treatment of inoperable parotid gland carcinoma is challenging and controversial. The purpose of this paper was to present our experience in treating this malignancy using (125)I interstitial brachytherapy. METHODS AND MATERIALS: Thirteen patients with advanced carcinomas of the parotid gland were included and treated with (125)I interstitial brachytherapy in Peking University School and Hospital of Stomatology from January 2003 to December 2015. All patients were treated with (125)I interstitial brachytherapy as a sole modality for the primary tumor...
November 1, 2017: Brachytherapy
https://www.readbyqxmd.com/read/29101765/novel-anatomic-mapping-of-pelvic-plexus-at-prostatic-and-periprostatic-region-on-fresh-frozen-cadaveric-setting
#16
Emre Huri, Mustafa F Sargon, Ilkan Tatar, Makbule Cisel Aydin, Mehmet Ezer, Figen Soylemezoglu
PURPOSE: We aimed to investigate the exact localization of neural pathway and the frequency of nerve fibers, which are located in the pelvic facial layers in the prostate and periprostatic regions. MATERIALS AND METHODS: We used four fresh frozen cadavers in this trial. Anatomical layers of anterior rectus fascia and abdominal rectus muscle were dissected to reach the retropubic area. Prostate, visceral and parietal pelvic fascia, levator ani muscle and puboprostatic ligaments were identified...
November 4, 2017: Urology Journal
https://www.readbyqxmd.com/read/29092806/an-effective-surgical-approach-for-the-management-of-recurrent-first-branchial-cleft-fistula-with-cysts-a-case-report
#17
Mi Jang, Chunfu Dai
The goal of this case report is to describe an unusual case of recurrent first branchial cleft fistula with cysts and the effective surgical approach of complete removal with preservation of the facial nerve. A 27-year-old woman presented to our clinic after unsuccessful removal twice during the last 20 years. We have achieved satisfactory outcomes by using an approach to identify the facial nerve at the stylomastoid foramen with canal wall up mastoidectomy under a microscope. No sign of facial palsy, hearing loss, or recurrence were noted in postoperative follow-up...
November 2, 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29092802/the-effects-of-mesna-on-the-facial-nerve-an-experimental-animal-study
#18
Deniz Baklacı, Rauf Oğuzhan Kum, Sezer Kulaçoğlu, Yavuz Fuat Yılmaz, Müge Özcan
OBJECTIVE: MESNA (Sodium-2-mercaptoethanesulfonate) is a mucolytic substance that is used for chemically assisted tissue dissection in various surgical operations. The aim of this study was to address the issue of possible neurotoxicity from topical administration of MESNA solution on the facial nerve. We used different concentrations of MESNA solution and evaluated their effects on facial nerve by histopathological and functional analysis. MATERIALS AND METHODS: These groups were the saline administered group (control) (3 rats, 6 facial nerves), the 25% MESNA solution group (3 rats, 6 facial nerves), and the 100% MESNA solution group (3 rats, 6 facial nerves)...
November 2, 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29057182/anterior-inferior-cerebellar-arteries-juxtaposed-with-the-internal-acoustic-meatus-and-their-relationship-to-the-cranial-nerve-vii-viii-complex
#19
Fernando Alonso, Mohammad W Kassem, Joe Iwanaga, Rod J Oskouian, Marios Loukas, Amin Demerdash, R Shane Tubbs
Vascular loops in the cerebellopontine angle (CPA) and their relationship to cranial nerves have been used to explain neurological symptoms. The anterior inferior cerebellar artery (AICA) has variable branches producing vascular loops that can compress the facial cranial nerve (CN) VII and vestibulocochlear (CN VIII) nerves. AICA compression of the facial-vestibulocochlear nerve complex can lead to various clinical presentations, including hemifacial spasm (HFS), tinnitus, and hemiataxia. The formation of arterial loops inside or outside of the internal auditory meatus (IAM) can cause abutment or compression of CN VII and CN VIII...
August 16, 2017: Curēus
https://www.readbyqxmd.com/read/29051404/complications-after-parotid-gland-surgery-our-experience
#20
Antonio Romano, Antonia Cama, Raffaele Corvino, Pasquale Graziano, Marco Friscia, Giorgio Iaconetta, Luigi Califano
AIM: Complications after parotid surgery include deficit of the facial nerve, wound complications, as sialocele and salivary fistula, and Frey syndrome; the goal of this study was to evaluate the relationship between the type of parotid surgery performed and the incidence of each of these complications. MATERIAL OF STUDY: A total of 184 patients were evaluated and 158 were included in the study. Four different kinds of intervention were made: extracapsular dissection, partial superficial parotidectomy; superficial parotidectomy and total parotidectomy...
2017: Annali Italiani di Chirurgia
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