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https://www.readbyqxmd.com/read/28343254/dynamic-measurements-of-cervical-neural-foramina-during-neck-movements-in-asymptomatic-young-volunteers
#1
Victor Chang, Azam Basheer, Timothy Baumer, Daniel Oravec, Colin P McDonald, Michael J Bey, Stephen Bartol, Yener N Yeni
PURPOSE: Neural foraminal dimensions are considered important in nerve root compression and development of cervical radiculopathy, but baseline data regarding their range during normal motion are not available. An in vivo study of cervical foraminal motion was conducted to characterize normal 3D dynamic foraminal dimensions during physiological neck motion and compare between different tasks and intervertebral segments. METHODS: Biplane X-ray imaging and computed tomography-based markerless tracking were used to measure foraminal height (FH) and width (FW) from five asymptomatic subjects during neck axial rotation and extension...
March 25, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28339645/the-extent-of-root-resorption-and-tooth-movement-following-the-application-of-ascending-and-descending-magnetic-forces-a-prospective-split-mouth-microcomputed-tomography-study
#2
Tiffany Teen Yu Huang, Selma Elekdag-Turk, Oyku Dalci, Mohammed Almuzian, Ersan Ilsay Karadeniz, Selma Elekdag-Turk, Carmen Gonzales, Peter Petocz, Tamer Turk, M Ali Darendeliler
Objective: Various factors have been examined in the literature in an attempt to reduce the incidence and severity of root resorption. The purpose of the present investigation is to test the null hypothesis that there is no difference in relation to force level using gradually increasing (ascending) and decreasing (descending) orthodontic force generated by magnets on the severity of Orthodontically Induced Inflammatory Iatrogenic Root Resorption (OIIRR) and amount of tooth movement. Methods: Twenty maxillary first premolars from 10 patients were subjected to ascending (25-225 g, magnets in attraction) and descending (225 to 25 g, magnets in repulsion) buccal forces using a split mouth design over an 8-week period...
February 16, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28339612/orthodontically-induced-cervical-root-resorption-in-humans-is-associated-with-the-amount-of-tooth-movement
#3
Alexander Dudic, Catherine Giannopoulou, Paolo Meda, Xavier Montet, Stavros Kiliaridis
Introduction: The aim of this study was to investigate the variation in the amount of the orthodontically induced cervical root resorption and the association with several factors, such as the amount of tooth displacement, location of tooth in the maxilla or mandible, and presence of an interference that may influence the amount of root resorption. Subjects and methods: This study included 30 subjects (20 females, 10 males) with an age range of 11.3 to 43.0 years...
January 25, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28339542/cervical-epidural-contrast-spread-patterns-in-fluoroscopic-antero-posterior-lateral-and-contralateral-oblique-view-a-three-dimensional-analysis
#4
Jatinder Gill, Jyotsna Nagda, Moris Aner, Thomas Simopoulos
Objective.:  To describe and to analyze cervical epidural contrast patterns seen in antero-posterior (AP), contralateral oblique (CLO), and lateral view. To identify factors that might help in predicting contrast distribution pattern and extent. Method.:  Spread of contrast in the cervical epidural space was prospectively studied in AP, lateral, and three CLO views. Results.:  CLO view showed contrast spread of variable thickness with its posterior margin overlying the ventral interlaminar line (VILL)...
October 7, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28339449/reversal-of-progressive-conscious-disturbance-with-epidural-blood-patch-for-cerebrospinal-fluid-leakage-at-c2-level
#5
Yi-Chen Lai, Yuan-Yi Chia, Wei-Hung Lien
Intracranial hypotension syndrome (IHS) is generally caused by cerebrospinal fluid (CSF) leakage. Complications include bilateral subdural hygroma or haematoma and herniation of the cerebellar tonsils. Epidural blood patch (EBP) therapy is indicated if conservative treatment is ineffective. We reported the case of a 46-year-old man with a history of postural headache and dizziness. The patient was treated with bed rest and daily hydration with 2000 mL of fluid for 2 weeks. However, dizziness and headache did not resolve, and he became drowsy and disoriented with incomprehensible speech...
March 2017: Pain Physician
https://www.readbyqxmd.com/read/28337706/clinical-and-radiological-outcomes-of-two-level-endoscopic-posterior-cervical-foraminotomy
#6
Myung Soo Youn, Myeong Hwan Shon, Yoon Jae Seong, Jong Ki Shin, Tae Sik Goh, Jung Sub Lee
PURPOSE: The efficacy and safety of endoscopic posterior cervical foraminotomy (EPCF) have been demonstrated for single-level cervical radiculopathy, but no report in the medical literature has described the clinical results of two-level EPCF. The aim of this study was to assess the clinical and radiological outcomes of two-level EPCF performed in patients with cervical radiculopathy. METHODS: Twenty-two consecutive patients (9 females and 13 males) that underwent two-level EPCF with cervical radiculopathy from January 2012 to January 2014 were included in this study...
March 23, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28336998/characteristics-and-treatment-of-invasive-cervical-resorption-in-vital-teeth-a-narrative-review-and-a-report-of-two-cases
#7
P Tsaousoglou, E Markou, N Efthimiades, I Vouros
Invasive cervical resorption (ICR) is a significant defect of the root surface where the hard dental tissues are undermined and become translucent due to the resorptive granulomatous tissue. It is mainly detected on radiographs. The radiographic appearance of ICR is asymmetrical radiolucency with irregular margins and an unchanged root canal. The purpose of this study is to present a comprehensive review together with the characteristics and the treatment of ICR through two cases which were followed-up for 36 months...
March 24, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28333370/influence-of-nickel-titanium-rotary-systems-with-varying-tapers-on-the-biomechanical-behaviour-of-maxillary-first-premolars-under-occlusal-forces-a-finite-element-analysis-study
#8
S Askerbeyli Ors, A Serper
AIM: To evaluate the effect of three nickel-titanium (Ni-Ti) rotary systems with varying tapers on stress distribution and to analyse potential fracture patterns as well as the volume of fracture-susceptible regions in two-rooted maxillary premolars. METHODOLOGY: The root canals of three single-rooted premolars were prepared with either HeroShaper (Micro-Mega, Besançon, France) to (size 30, .04 taper), Revo-S (Micro-Mega) to AS30 (size 30, .06 taper) or ProTaper Universal (Dentsply Maillefer, Ballaigeus, Switzerland) to F3 (size 30, ...
March 23, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28331369/comparison-of-conventional-and-semilunar-coronally-positioned-flap-techniques-for-root-coverage-in-teeth-with-cervical-abrasion-restored-with-pink-resin
#9
Felipe Rychuv Santos, Carmen Lucia Mueller Storrer, Emanuelle Juliana Cunha, Lucienne M Ulbrich, Camilo Andress Villabona Lopez, Tatiana Miranda Deliberador
Gingival recession is the most common mucogingival defect, characterized by apical migration of the gingival margin from the cementoenamel junction and root exposure. Several surgical techniques are reported for the treatment of gingival recession. Here we present a comparison of the conventional (coronally advanced flap) and semilunar coronally positioned flap techniques for root coverage in teeth with cervical abrasion restored with pink resin that mimics the color of the gingiva. Although the conventional technique is more predictable, we found that both techniques were effective in achieving satisfactory and esthetic root coverage...
2017: Clinical, Cosmetic and Investigational Dentistry
https://www.readbyqxmd.com/read/28315612/ultrasound-assessment-of-peripheral-nerve-pathology-in-neurofibromatosis-type-1-and-2
#10
Natalie Winter, Tim W Rattay, Hubertus Axer, Eva Schäffer, Bernhard F Décard, Isabel Gugel, Martin Schuhmann, Alexander Grimm
OBJECTIVE: The neurofibromatoses (NF) type 1 and 2 are hereditary tumor predisposition syndromes caused by germline mutations in the NF1 and NF2 tumor suppressor genes. In NF1 and 2, peripheral nerve tumors occur regularly. For further characterizing nerve ultrasound was performed in patients with NF1 and 2. METHODS: Patients with established diagnosis of NF1 (n=27) and NF2 (n=10) were included. Ultrasound of peripheral nerves and cervical roots was performed during routine follow-up visits...
February 20, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28306578/selective-low-volume-nerve-block-for-the-open-surgical-fixation-of-a-midshaft-clavicle-fracture-in-a-conscious-high-risk-patient-a-case-report
#11
Carlos I Salvadores de Arzuaga, José M Naya Sieiro, Oscar Salmeron Zafra, Miguel A González Posada, Esther Marquez Martínez
We report a case of successful intraoperative management using only low-volume regional anesthesia for the open surgical fixation of a traumatic clavicle fracture in a conscious 69-year-old man with severe chronic obstructive pulmonary disease. To avoid general anesthesia, we provided low-volume C5 and C6 nerve root blocks along with a superficial cervical plexus block using only 9 mL of anesthetic solution to avoid the often encountered complications of higher volume injections. Throughout the procedure, the patient remained comfortable and cooperative with stable hemodynamics and respiration...
March 16, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28304226/integration-of-active-pauses-and-pattern-of-muscular-activity-during-computer-work
#12
Nancy St-Onge, Afshin Samani, Pascal Madeleine
Submaximal isometric muscle contractions have been reported to increase variability of muscle activation during computer work; however, other types of active contractions may be more beneficial. Our objective was to determine which type of active pause vs. rest is more efficient in changing muscle activity pattern during a computer task. Asymptomatic regular computer users performed a standardised 20-min computer task four times, integrating a different type of pause: sub-maximal isometric contraction, dynamic contraction, postural exercise and rest...
March 17, 2017: Ergonomics
https://www.readbyqxmd.com/read/28296953/a-numerical-investigation-of-intrathecal-isobaric-drug-dispersion-within-the-cervical-subarachnoid-space
#13
Per Thomas Haga, Giulia Pizzichelli, Mikael Mortensen, Miroslav Kuchta, Soroush Heidari Pahlavian, Edoardo Sinibaldi, Bryn A Martin, Kent-Andre Mardal
Intrathecal drug and gene vector delivery is a procedure to release a solute within the cerebrospinal fluid. This procedure is currently used in clinical practice and shows promise for treatment of several central nervous system pathologies. However, intrathecal delivery protocols and systems are not yet optimized. The aim of this study was to investigate the effects of injection parameters on solute distribution within the cervical subarachnoid space using a numerical platform. We developed a numerical model based on a patient-specific three dimensional geometry of the cervical subarachnoid space with idealized dorsal and ventral nerve roots and denticulate ligament anatomy...
2017: PloS One
https://www.readbyqxmd.com/read/28289637/ultrasonography-evaluation-of-vulnerable-vessels-around-cervical-nerve-roots-during-selective-cervical-nerve-root-block
#14
Hoon Hoon Lee, Donghwi Park, Yoongul Oh, Ju Seok Ryu
OBJECTIVE: To evaluate the prevalence of vulnerable blood vessels around cervical nerve roots before cervical nerve root block in the clinical setting. METHODS: This retrospective study included 74 patients with cervical radiculopathy who received an ultrasonography-guided nerve block at an outpatient clinic from July 2012 to July 2014. Before actual injection of the steroid was performed, we evaluated the vulnerable blood vessels around each C5, C6, and C7 nerve root of each patient's painful side, with Doppler ultrasound...
February 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28288046/fdg-pet-ct-in-pediatric-neurolymphomatosis
#15
Carole de Vaugelade, Henri de Clermont-Gallerande, Marie Meyer, Aude My Duyen Tiphaine, Alice Benjamin, Stephane Ducassou, Jean-François Chateil, Philippe Fernandez
An 8-year-old girl presented with back and leg pain and left arm and leg paresis. Lumbar puncture was suggestive of lymphocytic meningitis without identified organism. A second lumbar puncture demonstrated a large number of lymphoid B cells, with positive immunohistochemical staining for CD20 and CD25, proving the diagnosis of neurolymphomatosis. Brain and spine MRI demonstrated involvement of cervical and lumbosacral nerve roots. FDG PET/CT showed multiple bone metastases in addition to nerve involvement. Postchemotherapy FDG PET/CT demonstrated complete metabolic response...
March 10, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28275283/a-c-shaped-canal-in-a-maxillary-second-molar-prexion-3d-cone-beam-computed-tomography-analysis
#16
Daniela Siqueira Lopes, Andréa Cruz Câmara, Carlos Menezes Aguiar, Monikelly do Carmo Chagas do Nascimento, Luciane Farias de Araújo
OBJECTIVE: The aim of this study was to present an atypical case of a C-shaped root canal that was present in the vestibular root of a permanent maxillary second molar using PreXion 3-D cone-beam computed tomography (CBCT) as a diagnostic device. MATERIALS AND METHODS: A 50-year-old female patient was referred for routine examination to a private diagnostic imaging clinic in Recife-Pernambuco. During the physical examination, the presence of an unusual C-shaped anatomy in the vestibular canal with a mesiodistal interconnection that extended from the apical to the cervical third was detected in axial slices acquired with a PreXion 3-D scanner...
December 2016: Acta Stomatologica Croatica
https://www.readbyqxmd.com/read/28272207/an-independent-evaluation-on-the-interobserver-reliability-and-intraobserver-reproducibility-of-toyama-classification-system-for-cervical-dumbbell-tumors
#17
Mengchen Yin, Quan Huang, Zhengwang Sun, Xin Gao, Guanghui Chen, Shaohui He, Ye Xia, Junming Ma, Wen Mo, Jianru Xiao
Dumbbell tumors can not only cause the compression of cervical cord and nerve root, but also invade the important structures and the surrounding organs, causing great harm to the patient. Toyama classification that is commonly used has not been evaluated and still requires independent validation.The objectives of this study were to evaluate and analyze the interobserver reliability and intraobserver reproducibility of Toyama classification system, explore the differences, discover the shortages, and evaluate the clinical value for diagnosis...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28266004/the-cervical-arteries-an-anatomical-study-with-application-to-avoid-the-nerve-root-and-spinal-cord-blood-supply
#18
Mehmet Arslan, Halil İbrahim Açar, Ayhan Cömert, R Shane Tubbs
AIM: Injury to the vascular supply to the cervical spinal cord can lead to anterior spinal artery syndrome, which is often associated with transforaminal corticosteroid injections to the cervical foramina. The purpose of this cadaveric study was to examine the morphology of the cervical arteries and to emphasize their clinical importance. MATERIAL AND METHODS: Five formalin-fixed human cadavers were used to determine the morphology of the radicular arteries from the vertebral, ascending and deep cervical arteries in the cervical foraminal region...
February 7, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28262355/the-importance-of-a-neck-exam-in-sport-related-concussion-cervical-schwannoma-in-post-concussion-syndrome
#19
David M Langelier, Kathryn J Schneider, John Hurlbert, Chantel T Debert
OBJECTIVE: Few cases of cervical schwannoma have been reported following head trauma. The present case, involves a schwannoma of the C2 spinal nerve mimicking post-concussion symptoms following a sport-related concussion (SRC). DESIGN: Case study. SETTING: University of Calgary, Sport Medicine Clinic, Calgary, Alberta, Canada. RESULTS: We report a 28 year old, athlete who developed headache, dizziness, photophobia, and neck pain following a cycling accident...
January 17, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28257744/twenty-year-follow-up-of-a-familial-case-of-pth1r-associated-primary-failure-of-tooth-eruption
#20
Cláudia Misue Kanno, José Américo de Oliveira, José Fernando Garcia, Helmut Roth, Bernhard H F Weber
INTRODUCTION: Nonsyndromic primary failure of eruption (PFE) is a rare autosomal dominant disorder of dental eruption with no obvious dental or soft tissue interference. The purposes of this study were to genetically and clinically characterize a family with many members affected by PFE and to describe the natural evolution of the disorder. METHODS: Three generations of a family with 18 members, 10 of them clinically affected by PFE, were evaluated periodically during 20 years of clinical follow-up...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
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