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https://www.readbyqxmd.com/read/30024998/correlation-between-implant-geometry-implant-surface-insertion-torque-and-primary-stability-in-vitro-biomechanical-analysis
#1
Antonello Falco, Marco Berardini, Paolo Trisi
PURPOSE: Primary implant stability represents the first step for successful osseointegration. The knowledge of the correlation between host bone density, insertion torque, and implant macrogeometry seems to be fundamental to achieve sufficient primary implant bone fixation in each clinical situation. The purpose of this study was to measure, in vitro, the impact of dental implant macrogeometry and insertion torque values on primary stability in relation to different bone densities, representing both the human mandible and maxilla...
July 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/30024590/mir-181d-promotes-steroid-induced-osteonecrosis-of-the-femoral-head-by-targeting-smad3-to-inhibit-osteogenic-differentiation-of-hbmscs
#2
Y Xie, J-Z Hu, Z-Y Shi
OBJECTIVE: We aimed to investigate whether miR-181d may be involved in steroid-induced osteonecrosis of the femoral head (ONFH) and its underlying mechanism. PATIENTS AND METHODS: Quantitative reverse transcriptase-polymerase chain reaction (qRT-PCR) was used to detect the expression of miR-181d in bone marrow of 5 cases of steroid-induced femoral head necrosis and 5 cases of femoral head necrosis secondary to femoral neck fractures. Marrow-derived mesenchymal stem cells (MSCs) were obtained from bone marrow samples and identified...
July 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/30024559/titanium-elastic-nailing-versus-locking-compression-plating-in-school-aged-pediatric-subtrochanteric-femur-fractures
#3
Yunlan Xu, Jingxia Bian, Kaiying Shen, Bin Xue
The treatment of children between 5 and 12 years of age suffering from subtrochanteric femoral fracture is challenging. The optimal choice of internal fixation for these patients is controversial. The purpose of this study is to compare the outcomes and complications of titanium elastic nail and open reduction with plate fixation of subtrochanteric femur fractures in school-aged children.A total of 67 children aged 5 to 12 years with subtrochanteric femur fractures treated with titanium elastic nails or open plating were identified at our institution from January 2007 to December 2017...
July 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/30024547/quality-of-life-in-chinese-patients-with-laryngeal-cancer-after-radiotherapy
#4
Ji-Wei Mu, Mei-Jia Zhang, Bi-Qi Luan, Jian Wu, Ping Sun
This retrospective study explored the quality of life (QoL) in Chinese patients with laryngeal cancer (LC) after radiotherapy.Fifty-nine eligible patients with Tis-T4 LC were included in this retrospective study. All patients received radiotherapy. Outcomes were measured by the core measure Questionnaire-C30 (QLQ-C30), and the disease-specific Head & Neck cancer module (QLQ-H&N35). All outcomes were assessed before and 3 months after the radiotherapy.Three months after the radiotherapy, all items of QLQ-C30 and QLQ-H&N35 scales changed significantly (P < ...
July 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/30024518/comparison-of-clinical-and-radiological-outcomes-between-modified-gallie-graft-fusion-wiring-technique-and-posterior-cervical-screw-constructs-for-type-ii-odontoid-fractures
#5
Hui Wang, Rui Xue, Lumei Wu, Wenyuan Ding, Lei Ma
The aim of this study was to compare clinical and radiological outcomes between modified Gallie graft fusion-wiring technique and posterior cervical screw constructs for Type II odontoid fractures, and hope to provide references in decision making and surgical planning for both spinal surgeons and surgically treated patients.This is a retrospective study. By retrieving the medical records from January 2005 to July 2015 in our hospital, 53 Type II odontoid fracture patients were reviewed. According to the instrumentation type, patients were divided into 2 groups: Wiring group and Screw group...
July 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/30024504/mini-invasive-treatment-of-a-large-pseudoaneurysm-of-the-neck-related-to-central-venous-catheter-placement-a-case-report
#6
Chiara Palermo, Angelo Sanfiorenzo, Alessia Testo Giaquinta, Carla Virgilo, Massimiliano Veroux, Pierfrancesco Veroux
RATIONALE: Central venous catheter (CVC) placement, particularly in emergency setting, may be associated with significant morbidity and mortality. PATIENT CONCERNS: A 33-year old woman with suspected pulmonary embolism, developed a pseudoaneurysm of the neck three days after a CVC placement in the right internal jugular vein, determining compression to adjacent neck structures. DIAGNOSES: Computed tomography angiography and selective angiography demonstrated the presence of the pseudoaneurysm originating from the thyro-cervical trunk...
July 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/30024070/congenital-fibroblastic-connective-tissue-nevi-unusual-and-misleading-presentations-in-three-infantile-cases
#7
Jebrane Bouaoud, Sylvie Fraitag, Veronique Soupre, Marc Mitrofanoff, Olivia Boccara, Christelle Galliot, Christine Bodemer, Arnaud Picard, Roman H Khonsari
BACKGROUND: Fibroblastic connective tissue nevi (FCTN) are benign skin conditions characterized by bland spindle cells infiltrating the reticular dermis and the upper subcutis with preservation of adnexal structures. A subset of FCTN expresses CD34, which may cause difficulties in the differential diagnosis, in particular with dermatofibrosarcoma (DFSP). We aim to study clinical and histological main features of congenital FCTN to better understand their heterogeneity. METHODS: We present 3 cases of congenital FCTN with misleading pseudo-tumoral presentations and compare them with published cases in literature...
July 19, 2018: Pediatric Dermatology
https://www.readbyqxmd.com/read/30023436/blunt-rupture-of-the-thoracic-duct-after-severe-thoracic-trauma
#8
Samuel R Brown, Carlos Fernandez, Robert Bertellotti, Juan Antonio Asensio
A 53-year-old man was admitted to our trauma center after sustaining thoracoabdominal injuries, secondary to a rear-end motor vehicle collision. As he stepped out of his vehicle, he was struck by a tractor trailer at 55 mph. The following were the initial vital signs on his arrival: heart rate 140 beats/min, blood pressure 142/80 mm Hg, respiratory rate 28 breaths/min, temperature 36.8°C, and oxygen saturation 93%. The Glasgow Coma Scale score was 15 and the Injury Severity Score was 59. He was evaluated and resuscitated per the advanced trauma life support protocols...
2018: Trauma surgery & acute care open
https://www.readbyqxmd.com/read/30023433/primary-prevention-of-contact-sports-related-concussions-in-amateur-athletes-a-systematic-review-from-the-eastern-association-for-the-surgery-of-trauma
#9
Toby M Enniss, Khaled Basiouny, Brian Brewer, Nikolay Bugaev, Julius Cheng, Omar K Danner, Thomas Duncan, Shannon Foster, Gregory Hawryluk, Hee Soo Jung, Felix Lui, Rishi Rattan, Pina Violano, Marie Crandall
Background: Awareness of the magnitude of contact sports-related concussions has risen exponentially in recent years. Our objective is to conduct a prospectively registered systematic review of the scientific evidence regarding interventions to prevent contact sports-related concussions. Methods: Using the Grading of Recommendations Assessment, Development, and Evaluation methodology, we performed a systematic review of the literature to answer seven population, intervention, comparator, and outcomes (PICO) questions regarding concussion education, head protective equipment, rules prohibiting high-risk activity and neck strengthening exercise for prevention of contact sports-related concussion in pediatric and adult amateur athletes...
2018: Trauma surgery & acute care open
https://www.readbyqxmd.com/read/30023392/optimal-regimen-of-cisplatin-in-squamous-cell-carcinoma-of-head-and-neck-yet-to-be-determined
#10
EDITORIAL
Xiuning Le, Ehab Y Hanna
No abstract text is available yet for this article.
June 2018: Annals of Translational Medicine
https://www.readbyqxmd.com/read/30022945/unruptured-saccular-aneurysm-arising-from-the-fenestrated-a1-segment-of-the-anterior-cerebral-artery-report-of-2-cases
#11
Naoya Iwabuchi, Atsushi Saito, Kentaro Fujimoto, Taigen Nakamura, Tatsuya Sasaki
Some cases of aneurysms originating from the fenestrated A1 segment of the anterior cerebral artery (ACA) have been reported, but the pitfalls of the surgical procedure have not been well determined. We herein report 2 cases of a saccular aneurysm arising from the fenestrated A1 segment. Case 1 was a 72-year-old man incidentally diagnosed with an unruptured left ACA aneurysm on magnetic resonance imaging (MRI). Cerebral angiography revealed a saccular aneurysm arising from the proximal end of the left A1 segment...
May 2018: Case Reports in Neurology
https://www.readbyqxmd.com/read/30022909/giant-cell-tumors-of-soft-tissue-in-the-head-and-neck-a-review-article
#12
Shahd M Hafiz, Eman S Bablghaith, Amal J Alsaedi, Mohammad H Shaheen
Giant-cell tumor of soft tissue (GCT-ST) is a rare neoplasm that was first described in 1972. Due to its histological and immune-histochemical similarities with GCT of bones, GCT-ST is thought to be its counterpart. This review article aims to recognize the characteristics of this rare tumor along with a favorable way to diagnose and treat. We reviewed 12 cases of GCT-ST in the head and neck. This tumor involves both sexes at any age. Histopathology in many cases revealed the presence of mononuclear cells and spindle cells...
July 2018: International Journal of Health Sciences
https://www.readbyqxmd.com/read/30022849/the-added-value-of-bedside-examination-and-screening-qst-to-improve-neuropathic-pain-identification-in-patients-with-chronic-pain
#13
Hans Timmerman, Oliver Hg Wilder-Smith, Monique Ah Steegers, Kris Cp Vissers, André P Wolff
Background: The assessment of a neuropathic pain component (NePC) to establish the neurological criteria required to comply with the clinical description is based on history taking, clinical examination, and quantitative sensory testing (QST) and includes bedside examination (BSE). The objective of this study was to assess the potential association between the clinically diagnosed presence or absence of an NePC, BSE, and the Nijmegen-Aalborg screening QST (NASQ) paradigm in patients with chronic (≥3 months) low back and leg pain or with neck shoulder arm pain or in patients with chronic pain due to suspected peripheral nerve damage...
2018: Journal of Pain Research
https://www.readbyqxmd.com/read/30022834/effect-of-denosumab-on-bone-mineral-density-in-japanese-women-with-osteopenia-treated-with-aromatase-inhibitors-for-breast-cancer-subgroup-analyses-of-a-phase-ii-study
#14
Katsuhiko Nakatsukasa, Hiroshi Koyama, Yoshimi Ouchi, Kouichi Sakaguchi, Yoshifumi Fujita, Takayuki Matsuda, Makoto Kato, Eiichi Konishi, Tetsuya Taguchi
Background: The aim of the study was to conduct subgroup analyses of therapeutic effects of 12-month denosumab therapy on the percentage change in bone mineral density (BMD) from baseline in the lumber spine and femoral neck. Materials and methods: We prospectively evaluated the BMD of the lumbar spine and femoral neck of 100 hormone receptor-positive, clinical stage I-IIIA postoperative postmenopausal breast cancer patients, for whom treatment with aromatase inhibitors (AIs) as adjuvant endocrine therapy was scheduled...
2018: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/30022712/how-i-do-it-new-dissector-device-allows-for-effective-operative-field-in-transoral-endoscopic-thyroid-surgery-using-vestibular-approach
#15
Verena Müller, Martina Mogl, Philippa Seika, Thomas Jöns, Igor Sauer, Johann Pratschke, Angkoon Anuwong, Ricardo Zorron
BACKGROUND: Minimally invasive thyroid and parathyroid resections are rarely performed. Promising new endoscopic transoral approaches to the anterior neck (transoral endoscopic thyroidectomy vestibular approach [TOETVA]) have been described with good results and few complications. This study evaluates a new device to allow the safe entrance of trocars in the subplatysmal space for TOETVA in a cadaver model. METHODS: The technique was performed in 4 unilateral thyroidectomies in female cadavers...
July 1, 2018: Surgical Innovation
https://www.readbyqxmd.com/read/30022593/clinical-features-and-outcomes-of-merkel-cell-carcinoma-in-20-cats
#16
A Sumi, J K Chambers, M Doi, T Kudo, T Omachi, K Uchida
The biological behaviour and prognostic factors of Merkel cell carcinoma (MCC) in 20 cats were studied. The tumours were surgically removed and histopathologically examined. The animals were 8 to 20 years old (median age: 14 years), and the tumours were predominantly located in the neck and head. Follow-up data were available in 17 cases, and 12 cats died within a year of surgery. The overall median survival time after resection was 243 days (range 16-360 days). Recurrence occurred in 11 cases, although 6 of them (55%) were found to be margin-negative...
July 18, 2018: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/30022353/quantitative-performance-of-124-i-pet-mr-of-neck-lesions-in-thyroid-cancer-patients-using-124-i-pet-ct-as-reference
#17
Walter Jentzen, Jinda Phaosricharoen, Benedikt Gomez, Philipp Hetkamp, Vanessa Stebner, Ina Binse, Sonja Kinner, Ken Herrmann, Amir Sabet, James Nagarajah
BACKGROUND: In patients with differentiated thyroid cancer (DTC), serial 124 I PET/CT imaging is, for instance, used to assess the absorbed (radiation) dose to lesions. Frequently, the lesions are located in the neck and they are close to or surrounded by different tissue types. In contrast to PET/CT, MR-based attenuation correction in PET/MR may be therefore challenging in the neck region. The aim of this retrospective study was to assess the quantitative performance of 124 I PET/MRI of neck lesions by comparing the MR-based and CT-based 124 I activity concentrations (ACs)...
July 19, 2018: EJNMMI Physics
https://www.readbyqxmd.com/read/30022324/obstructive-sleep-apnea-negatively-impacts-objectively-measured-physical-activity
#18
Trent A Hargens, Ryan A Martin, Courtney L Strosnider, Gabrielle Elam Williams Giersch, Christopher J Womack
PURPOSE: Obesity and obstructive sleep apnea (OSA) are frequent comorbid conditions. The impact of OSA on objectively measured physical activity (PA), independent of obesity, is not clear. The purpose of this study is to examine the effect of OSA on PA measured via accelerometer. METHODS: Overweight-to-obese individuals were recruited and screened for the presence of OSA via portable diagnostic device and divided into an OSA (n = 35) and control group (n = 24)...
July 18, 2018: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/30022281/autophagy-blockade-sensitizes-human-head-and-neck-squamous-cell-carcinoma-towards-cyt997-through-enhancing-excessively-high-reactive-oxygen-species-induced-apoptosis
#19
Lixia Gao, Xiangdong Zhao, Liwei Lang, Chloe Shay, W Andrew Yeudall, Yong Teng
The functional relationship between apoptosis and autophagy in anticancer drug treatment is extremely complex, and the molecular machinery is obscure. This study aims to investigate the efficacy of CYT997, a novel microtubule-disrupting agent, in head and neck squamous cell carcinomas (HNSCCs) and complete the autophagy-apoptosis puzzle involved in drug action. We report here that CYT997 exhibits anticancer activity by triggering oxidative stress-associated apoptosis in HNSCC cells. Interestingly, upregulation of autophagy by mTOR-dependent pathways appears to have a cytoprotective role in preventing apoptosis by inhibiting CYT997-induced excessively high levels of reactive oxygen species (ROS)...
July 18, 2018: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/30022227/spatial-distribution-of-microcracks-in-osteoarthritic-femoral-neck-influence-of-osteophytes-on-microcrack-formation
#20
Gustavo D Rabelo, Nathalie Portero-Muzy, Evelyne Gineyts, Jean-Paul Roux, Roland Chapurlat, Pascale Chavassieux
Osteophytes have been suggested to influence the bone mechanical properties. The aim of this study was to compare the microcrack density in osteophytes with that in the other parts of the osteoarthritic femoral neck (FN). The presence of microcracks was investigated in the ultra-distal FN and in the osteophytes in samples obtained during hip arthroplasty in 24 postmenopausal women aged 67 ± 10 years. Furthermore, the 3D microarchitecture and the collagen crosslinks contents were assessed by high-resolution peripheral quantitative computed tomography and high-performance liquid chromatography, respectively...
July 18, 2018: Calcified Tissue International
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