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https://www.readbyqxmd.com/read/29165309/clinical-characteristics-of-patients-with-dizziness-after-motor-vehicle-accident
#1
Min Bum Kim, Suk Won Chang, Gil Chai Lim, Chan Il Song
OBJECTIVE: The purpose of this study was to identify the clinical characteristics of dizziness occurring after a motor vehicle accident. MATERIALS AND METHODS: We retrospectively analyzed 217 patients who had visited a tertiary medical center complaining of dizziness after a motor vehicle accident between January 2009 and December 2014. Of the 217 patients, we enrolled 54 patients who had undergone a vestibular function test and had no definite evidence of fracture of the temporal bone or intracranial lesions...
November 21, 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29160929/anatomical-variations-of-the-human-cochlea-determined-from-micro-ct-and-high-resolution-ct-imaging-and-reconstruction
#2
Jie Tang, Xianglong Tang, Zhenhua Li, YiKang Liu, SongHua Tan, Heng Li, RongDan Ke, Zhi Wang, Li Gong, AnZhou Tang
Understanding the anatomical variations in the human cochlea are important for cochlear implants. This study examined these variations using a reconstructed fusion model of the skull and temporal bone. The 3D digital model of the temporal bone was reconstructed from multiple axial micro-CT scans of temporal bone and high resolution CT (HRCT) of the skull from 15 cadavers. A skull model was reconstructed and merged with the reconstructed temporal bone. The 3D relationship between the cochlea and the skull's mid-sagittal plane was analyzed...
November 21, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29157165/successful-cochlear-implantation-in-langerhans-cell-histiocytosis-a-rare-case
#3
Gaurav Gupta, Avani Jain, Mohnish Grover
An 8-year-old girl presented with a 1-year history of bilateral progressive hearing loss and vertigo for 6 months. High-resolution computed tomography of the temporal bones demonstrated multiple lytic lesions. Histopathology examination confirmed a diagnosis of Langerhans cell histiocytosis (LCH). She underwent chemotherapy for 12 months. Following treatment, she was in remission. However, the bilateral profound sensorineural hearing loss persisted. She underwent right cochlear implantation with very good functional audiological outcomes...
November 20, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/29155044/the-forkhead-transcription-factor-unc-130-foxd-integrates-both-bmp-and-notch-signaling-to-regulate-dorsoventral-patterning-of-the-c-elegans-postembryonic-mesoderm
#4
Qinfang Shen, Leila B Toulabi, Herong Shi, Erin E Nicklow, Jun Liu
The proper development of a multicellular organism requires precise spatial and temporal coordination of cell intrinsic and cell extrinsic regulatory mechanisms. Both Notch signaling and bone morphogenetic protein (BMP) signaling function to regulate the proper development of the C. elegans postembryonic mesoderm. We have identified the C. elegans FOXD transcription factor UNC-130 as a major target functioning downstream of both BMP signaling and Notch signaling to regulate dorsoventral patterning of the postembryonic mesoderm...
November 16, 2017: Developmental Biology
https://www.readbyqxmd.com/read/29153239/congenital-abnormalities-of-the-temporomandibular-joint
#5
REVIEW
Christopher J Galea, Jason E Dashow, Jennifer E Woerner
Congenital deformities of the temporomandibular joint (TMJ) complex can present as a heterogeneous continuum of growth disturbances of the mandibular condyle, articular eminence, and temporal bone. This article describes several syndromes with congenital condylar deformity, including mandibulofacial dysostosis (Treacher Collins syndrome), hemifacial microsomia, oculoauriculovertebral syndrome, oculomandibulodyscephaly (Hallermann-Streiff syndrome), and Nager syndrome. Variations in the extent of TMJ deficiency seen in each individual case influence the timing and techniques of TMJ reconstruction...
February 2018: Oral and Maxillofacial Surgery Clinics of North America
https://www.readbyqxmd.com/read/29149722/effects-of-middle-ear-quasi-static-stiffness-on-sound-transmission-quantified-by-a-novel-3-axis-optical-force-sensor
#6
Ivo Dobrev, Jae Hoon Sim, Baktash Aqtashi, Alexander M Huber, Thomas Linder, Christof Röösli
BACKGROUND: Intra-operative quantification of the ossicle mobility could provide valuable feedback for the current status of the patient's conductive hearing. However, current methods for evaluation of middle ear mobility are mostly limited to the surgeon's subjective impression through manual palpation of the ossicles. This study investigates how middle ear transfer function is affected by stapes quasi-static stiffness of the ossicular chain. The stiffness of the middle ear is induced by a) using a novel fiber-optic 3-axis force sensor to quantify the quasi-static stiffness of the middle ear, and b) by artificial reduction of stapes mobility due to drying of the middle ear...
November 10, 2017: Hearing Research
https://www.readbyqxmd.com/read/29149352/prognostic-potential-of-markers-of-bone-turnover-in-delayed-healing-tibial-diaphyseal-fractures
#7
Malhar Kumar, Dnyaneshwar Shelke, Saumil Shah
INTRODUCTION: Clinical and radiographic examinations detect delayed or nonunion only after the event has occurred. Biochemical markers of bone turnover (BTMs) are promising laboratory tools that offer an early insight into the likelihood of delayed union. We hypothesized that BTMs display temporal variations following fractures and the behavior of BTMs differ between normal and delayed union of fractures. METHODS: This was a prospective study of patients with closed fracture of tibia treated with intramedullary, interlocking nailing...
November 17, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/29146163/a-comparative-biomechanical-study-of-femoral-cortical-suspension-devices-for-soft-tissue-anterior-cruciate-ligament-reconstruction-adjustable-length-loop-versus-fixed-length-loop
#8
Moon Jong Chang, Tae Soo Bae, Young-Wan Moon, Jin Hwan Ahn, Joon Ho Wang
PURPOSE: To determine whether there are differences between adjustable-length loop and fixed-length loop devices in terms of the amount of displacement, temporal pattern of displacement, and ultimate failure load when tested using 4,500 cycles of sinusoidal loading with high loads (100-400 N). METHODS: Two cortical suspension devices with a fixed- or adjustable-length loop were tested. For our comparisons, a 20-mm fixed-length loop device and a fixed-length loop device with the same loop length were used...
November 13, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29145401/anatomically-specific-intratubular-and-interstitial-biominerals-in-the-human-renal-medullo-papillary-complex
#9
Ling Chen, Ryan S Hsi, Feifei Yang, Benjamin A Sherer, Marshall L Stoller, Sunita P Ho
Limited information exists on the anatomically-specific early stage events leading to clinically detectable mineral aggregates in the renal papilla. In this study, quantitative multiscale correlative maps of structural, elemental and biochemical properties of whole medullo-papillary complexes from human kidneys were developed. Correlative maps of properties specific to the uriniferous and vascular tubules using high-resolution X-ray computed tomography, scanning and transmission electron microscopy, energy dispersive X-ray spectroscopy, and immunolocalization of noncollagenous proteins (NCPs) along with their association with anatomy specific biominerals were obtained...
2017: PloS One
https://www.readbyqxmd.com/read/29142872/isolated-tympanic-plate-fracture-detected-by-cone-beam-computed-tomography-report-of-four-cases-with-review-of-literature
#10
Ashita Ritesh Kalaskar, Ritesh Kalaskar
The tympanic plate is a small part of the temporal bone that separates the mandibular condyle from the external auditory canal. Fracture of this small plate is rare and usually associated with other bony fractures, mainly temporal and mandibular bone. There is a limited amount of literature on this subject, which increases the chance of cases being overlooked by physicians and radiologists. This is further supported by purely isolated cases of tympanic plate fracture without evidence of other bony fractures...
October 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/29142869/temporomandibular-joint-synovial-chondromatosis-extending-to-the-temporal-bone-a-report-of-two-cases
#11
Dae-Hoon Kim, Eun Hee Lee, Eunae Sandra Cho, Jae-Young Kim, Kug-Jin Jeon, Jin Kim, Jong-Ki Huh
Synovial chondromatosis is a rare benign lesion originating from the synovial membrane. It presents as adhesive or non-adhesive intra-articular cartilaginous loose bodies. Although the causes of synovial chondromatosis have not been fully elucidated, inflammation, external injury, or excessive use of joints have been suggested as possible causes. Synovial chondromatosis has been reported to occur most frequently at large joints that bear weights, with a rare occurrence at the temporomandibular joint (TMJ). When synovial chondromatosis develops at TMJ, clinical symptoms, including pain, joint sounds, and mouth opening may common...
October 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/29142161/treatment-and-outcomes-of-carcinoma-of-the-external-and-middle-ear-the-validity-of-en-bloc-resection-for-advanced-tumor
#12
Takuma Matoba, Nobuhiro Hanai, Hidenori Suzuki, Daisuke Nishikawa, Eiji Tachibana, Takeshi Okada, Shingo Murakami, Yasuhisa Hasegawa
Carcinoma of the external and middle ear is a very rare disease. Despite the various treatment modalities available, its prognosis is still poor. We aimed to analyze the treatment modalities, outcomes, and validity of surgical approaches, especially in advanced tumors in the ear. Twenty-five patients with carcinoma of the external and middle ear were retrospectively analyzed. The modified Pittsburgh staging system was used for staging of the patients. Overall and disease-free survival was estimated using of Kaplan-Meier method...
November 15, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/29138975/distal-transsylvian-keyhole-approach-for-unruptured-anterior-circulation-small-aneurysms
#13
Ririko Takeda, Hiroki Kurita
BACKGROUND: To reduce complications associated with conventional pterional craniotomy, a transsylvian keyhole approach for unruptured small anterior circulation aneurysms is proposed. METHODS: A 7-cm linear scalp incision is made along the hairline, beginning at the zygoma, followed by minimal temporal muscle dissection. Two burr holes are drilled out at McCarty's point and the temporal bone, and a 3-cm equilateral triangle bone flap is made, whose apex is located above the sylvian point...
November 14, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29135874/meni%C3%A3-re-and-friends-imaging-and-classification-of-hydropic-ear-disease
#14
Robert Gürkov
BACKGROUND: Over 75 years ago, endolymphatic hydrops was discovered as the pathologic correlate of Menière's disease. However, this pathologic finding could be ascertained only in postmortem histologic studies. Due to this diagnostic dilemma and the variable manifestation of the various audiovestibular symptoms, diagnostic classification systems based on clinical findings have been used hitherto. METHODS: A review of the literature of magnetic resonance (MR) imaging of hydropic ear disease...
December 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29134161/pneumatization-patterns-of-the-petrous-apex-and-lateral-sphenoid-recess
#15
Alexander Malone, Margherita Bruni, Robert Wong, Mark Tabor, K Paul Boyev
Introduction  The petrous apex poses a challenge for surgical intervention due to poor access. As intraoperative image guidance and surgical instrumentation improve, newer endoscopic approaches are increasingly favored. This study aims to provide normative data on the anatomy of the lateral sphenoid sinus recess and petrous apex. These normative data could assist in determining the efficacy of a transnasal transsphenoidal approach to lesions of the anteroinferior petrous apex. Methods  This is a retrospective study investigating normative data on all maxillofacial computed tomography (CT) scans performed at a level I trauma center over a 6-month period...
December 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29129760/the-key-role-of-proinflammatory-cytokines-matrix-proteins-rankl-opg-and-wnt-%C3%AE-catenin-in-bone-healing-of-hip-arthroplasty-patients
#16
Jean Cassuto, Agnetha Folestad, Jan Göthlin, Henrik Malchau, Johan Kärrholm
INTRODUCTION: We still lack understanding of why some implants fail while most remain stable after decades of use. Proinflammatory cytokines, matrix proteins and bone regulating cytokines of the RANKL/OPG (receptor activator of nuclear factor kappa B ligand/osteoprotegerin) and Wnt/β-catenin pathways are mandatory for normal bone repair but their spatial and temporal role in the healing of primary total hip arthroplasties (THA) has not been previously shown. MATERIALS AND METHODS: Twenty-four osteoarthritis patients with one-sided well-fixed primary THA were prospectively monitored during 18years (18Y) with repeated blood samples, clinical variables and radiographs...
November 10, 2017: Bone
https://www.readbyqxmd.com/read/29125038/melanotic-neuroectodermal-tumour-of-infancy-a-case-report-and-differential-diagnosis
#17
A P Tan, Thomas S Jacques, Kshitij Mankad, Gregory James, Owase Jeelani, Olga Slater, Felice D'Arco
Melanotic neuroectodermal tumour of infancy is an uncommon pigmented neoplasm of neural crest origin. It was first described in 1918 by Krompecher, known as congenital melanocarcinoma at that time. Although it is generally agreed upon that it is a benign entity, it is locally aggressive and has a significant recurrent risk, reported to be between 10-15%. There have also been prior reports of malignant behaviour in these tumours, although extremely rare. The majority of cases of this tumour (about 70%) arise from the maxilla and its occurrence in the cranial vault represents approximately 15...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/29121383/a-novel-etiology-for-pneumolabyrinth-after-temporal-bone-fracture-without-otic-capsule-involvement
#18
Thomas J Muelleman, Vidur Bhalla, Hinrich Staecker
Pneumolabyrinth has been considered an indicator of otic capsule involvement in temporal bone fractures. We present a novel theory for the etiology of pneumolabyrinth in a trauma patient without an otic capsule fracture: passage of intrathecal air into the labyrinth. Our patient experienced transient bilateral pneumolabyrinth after head trauma due to a motor vehicle collision. The patient was noted to have extensive pneumocephalus and a unilateral temporal bone fracture that spared the otic capsule. Initial computed tomography (CT) scans demonstrated air in the cochlea and both internal auditory canals...
October 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/29119369/clinical-importance-of-temporal-bone-features-for-the-efficacy-of-contrast-enhanced-sonothrombolysis-a-retrospective-analysis-of-the-nor-sass-trial
#19
Vojtech Novotny, Aliona Nacu, Christopher E Kvistad, Annette Fromm, Gesche F Neckelmann, Andrej N Khanevski, Haakon Tobro, Ulrike Waje-Andreassen, Halvor Naess, Lars Thomassen, Nicola Logallo
Contrast-enhanced sonothrombolysis (CEST) seems to be a safe and promising treatment in acute ischemic stroke. It remains unknown if temporal bone features may influence the efficacy of CEST. We investigated the association between different temporal bone features on admission computed tomography (CT) scan and the outcome in acute ischemic stroke patients included in the randomized Norwegian Sonothrombolysis in Acute Stroke Study (NOR-SASS). Patients diagnosed as stroke mimics and those with infratentorial stroke or with incorrect insonation were excluded...
November 8, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/29117921/intralabyrinthine-sporadic-endolymphatic-sac-tumour
#20
C Lucas, J-C Leclère, E Mornet, R Marianowski
INTRODUCTION: Endolymphatic sac tumours are benign, slowly growing tumours that invade the temporal bone, and present clinically in the form of unilateral hearing loss. They can be sporadic or occur in the context of Von Hippel-Lindau disease (VHL). CASE SUMMARY: The authors report a case of endolymphatic sac tumour arising in the utricle presenting histological and immunohistochemical features corresponding to endolymphatic sac tumour in a patient without VHL. DISCUSSION: Endolymphatic sac tumours invade the posterior part of the petrous temporal bone...
November 5, 2017: European Annals of Otorhinolaryngology, Head and Neck Diseases
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