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https://www.readbyqxmd.com/read/28426259/the-sernbo-score-predicts-1-year-mortality-after-displaced-femoral-neck-fractures-treated-with-a-hip-arthroplasty
#1
Carl Mellner, Thomas Eisler, Johannes Börsbo, Cyrus Brodén, Per Morberg, Sebastian Mukka
Background and purpose - Displaced femoral neck fractures (FNFs) are associated with high rates of mortality during the first postoperative year. The Sernbo score (based on age, habitat, mobility, and mental state) can be used to stratify patients into groups with different 1-year mortality. We assessed this predictive ability in patients with a displaced FNF treated with a hemiarthroplasty or a total hip arthroplasty. Patients and methods - 292 patients (median age 83 (65-99) years, 68% female) with a displaced FNF were included in this prospective cohort study...
April 20, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/28425082/discriminating-between-positional-and-non-positional-obstructive-sleep-apnea-using-some-clinical-characteristics
#2
Abderrahim Oulhaj, Sharina Al Dhaheri, Brenda Bin Su, Mohammed Al-Houqani
PURPOSE: The primary objective of this paper was to identify significant factors associated with positional Obstructive Sleep Apnea (POSA) and to provide a clinical tool for discriminating non positional from POSA. Secondary objectives were about estimating the prevalence of POSA, comparing the polysomnographic variables across POSA and non-POSA patients. METHODS: This was a cross sectional study on 278 patients who completed an overnight sleep study for OSA assessment...
April 19, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28415821/deep-sequencing-based-microrna-expression-signatures-in-head-and-neck-squamous-cell-carcinoma-dual-strands-of-pre-mir-150-as-antitumor-mirnas
#3
Keiichi Koshizuka, Nijiro Nohata, Toyoyuki Hanazawa, Naoko Kikkawa, Takayuki Arai, Atsushi Okato, Ichiro Fukumoto, Koji Katada, Yoshitaka Okamoto, Naohiko Seki
We adopted into RNA-sequencing technologies to construct the microRNA (miRNA) expression signature of head and neck squamous cell carcinoma (HNSCC). Our signature revealed that a total of 160 miRNAs (44 upregulated and 116 downregulated) were aberrantly expressed in cancer tissues. Expression of miR-150-5p (guide strand miRNA) and miR-150-3p (passenger strand miRNA) were significantly silenced in cancer tissues, suggesting both miRNAs act as antitumor miRNAs in HNSCC cells. Ectopic expression of mature miRNAs, miR-150-5p and miR-150-3p inhibited cancer cell aggressiveness...
March 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28412983/piezoelectric-technology-in-otolaryngology-and-head-and-neck-surgery-a-review
#4
C Meller, T E Havas
BACKGROUND: Piezoelectric technology has existed for many years as a surgical tool for precise removal of soft tissue and bone. The existing literature regarding its use specifically for otolaryngology, and head and neck surgery was reviewed. METHODS: The databases Medline, the Cochrane Central Register of Controlled Trials, PubMed, Embase and Cambridge Scientific Abstracts were searched. Studies were selected and reviewed based on relevance. RESULTS: Sixty studies were identified and examined for evidence of benefits and disadvantages of piezoelectric surgery and its application in otolaryngology...
April 17, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28410679/dual-energy-imaging-method-to-improve-the-image-quality-and-the-accuracy-of-dose-calculation-for-cone-beam-computed-tomography
#5
Kuo Men, Jianrong Dai, Xinyuan Chen, Minghui Li, Ke Zhang, Peng Huang
PURPOSE: To improve the image quality and accuracy of dose calculation for cone-beam computed tomography (CT) images through implementation of a dual-energy cone-beam computed tomography method (DE-CBCT), and evaluate the improvement quantitatively. METHODS: Two sets of CBCT projections were acquired using the X-ray volumetric imaging (XVI) system on a Synergy (Elekta, Stockholm, Sweden) system with 120kV (high) and 70kV (low) X-rays, respectively. Then, the electron density relative to water (relative electron density (RED)) of each voxel was calculated using a projection-based dual-energy decomposition method...
April 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28397021/neck-muscle-moment-arms-obtained-in-vivo-from-mri-effect-of-curved-and-straight-modeled-paths
#6
Bethany L Suderman, Anita N Vasavada
Musculoskeletal models of the cervical spine commonly represent neck muscles with straight paths. However, straight lines do not best represent the natural curvature of muscle paths in the neck, because the paths are constrained by bone and soft tissue. The purpose of this study was to estimate moment arms of curved and straight neck muscle paths using different moment arm calculation methods: tendon excursion, geometric, and effective torque. Curved and straight muscle paths were defined for two subject-specific cervical spine models derived from in vivo magnetic resonance images (MRI)...
April 10, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28396980/median-pericallosal-artery-with-double-proximal-origin-case-report-and-clinical-consideration
#7
Maryna A Kornieieva, Azmy M Hadidy, Suzan H Hinno
A 76-year-old male patient underwent magnetic resonance angiography of the head and neck vessels due to a recent incident of transitory ischemic attack. Cerebral angiogram uncovered the double proximal origin of the median unpaired pericallosal artery from the duplicated anterior communicating complex. The vessel curved around the corpus callosum and irrigated the paracentral lobule and the medial parietal cortical areas. The main trunks of the anterior cerebral arteries showed a branching pattern of the marginal callosal arteries, supplying orbital and frontal territories...
April 10, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28391429/femoral-neck-fracture-osteosynthesis-by-the-biplane-double-supported-screw-fixation-method-bdsf-reduces-the-risk-of-fixation-failure-clinical-outcomes-in-207-patients
#8
Orlin Filipov, Karl Stoffel, Boyko Gueorguiev, Christoph Sommer
INTRODUCTION: Osteosynthesis of femoral neck fractures is related up to 46% rate of complications. The novel method of biplane double-supported screw fixation (BDSF; Filipov's method) offers better stability using three medially diverging cannulated screws with two of them buttressed on the calcar. Biomechanically, the most effective component is the distal screw placed at steeper angle and supported on a large area along the distal and posterior cortex of the femoral neck following its spiral anterior curve...
April 8, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28384847/variation-in-the-branching-pattern-of-third-part-of-axillary-artery-a-case-report
#9
Aritra Banerjee, Chiman Kumari, Saroj Kaler Jhajhria
Anatomical variation of the branching pattern of axillary artery is very common. The knowledge of this variation is often useful during different surgical and interventional procedures. Variations include typically of Lateral Thoracic Artery (LTA) and Posterior Circumflex Humeral Artery (PCHA). The present case has been reported to document the variation of LTA and PCHA. The axilla of a 65-year-old embalmed female cadaver was routinely dissected for educational purpose in the Department of Anatomy, AIIMS, New Delhi, India...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28383806/socioeconomic-factors-and-survival-in-patients-with-non-metastatic-head-and-neck-squamous-cell-carcinoma
#10
Cheng Xu, Yu-Pei Chen, Xu Liu, Ling-Long Tang, Lei Chen, Yan-Ping Mao, Yuan Zhang, Rui Guo, Guan-Qun Zhou, Wen-Fei Li, Ai-Hua Lin, Ying Sun, Jun Ma
The effect of socioeconomic factors on receipt of definitive treatment and survival outcomes in non-metastatic head and neck squamous cell carcinoma (HNSCC) remains unclear. Eligible patients (n = 37,995) were identified from the United States Surveillance, Epidemiology and End Results (SEER) database between 2007 and 2012. Socioeconomic factors (i.e., median household income, education level, unemployment rate, insurance status, marital status and residence) were included in univariate/multivariate Cox regression analysis; validated factors were used to generate nomograms for cause-specific survival (CSS) and overall survival (OS), and a prognostic score model for risk stratification...
April 6, 2017: Cancer Science
https://www.readbyqxmd.com/read/28378274/performance-of-risk-assessment-tools-for-predicting-osteoporosis-in-south-indian-rural-elderly-men
#11
Anil Satyaraddi, Sahana Shetty, Nitin Kapoor, Kripa Elizabeth Cherian, Dukhabandhu Naik, Nihal Thomas, Thomas Vizhalil Paul
Osteoporosis in elderly men is an under-recognized problem. In the current study, we intend to look at the performance of two risk assessment tools [OSTA and MORES] for the diagnosis of osteoporosis. Osteoporosis was seen in 1/4th of elderly men at spine and 1/6th of them at femoral neck. Both risk assessment tools were found to have good sensitivity in predicting osteoporosis at spine and femoral neck with good area under curve (AUC). PURPOSE: This study attempts to look at the performance of osteoporosis self-assessment tool for Asians (OSTA) and male osteoporosis risk estimation score (MORES) for predicting osteoporosis in south Indian rural elderly men...
December 2017: Archives of Osteoporosis
https://www.readbyqxmd.com/read/28376741/neck-circumference-to-inter-incisor-gap-ratio-a-new-predictor-of-difficult-laryngoscopy-in-cervical-spondylosis-patients
#12
Yong-Zheng Han, Yang Tian, Mao Xu, Cheng Ni, Min Li, Jun Wang, Xiang-Yang Guo
BACKGROUND: Preoperative airway assessment help anticipate a difficult airway. We hypothesized that a close association existed between difficult laryngoscopy and the neck circumference/inter-incisor gap ratio (RNIIG). Our aim was to determine its utility in predicting difficult laryngoscopy in cervical spondylosis patients. METHODS: Two hundred thirteen consecutive patients, aged 20-70 years, scheduled to undergo cervical spine surgery under general anesthesia, were recruited...
April 4, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28370646/worst-pattern-of-invasion-and-occult-cervical-metastases-for-oral-squamous-carcinoma
#13
Claudia Velosa, Qiuying Shi, Todd M Stevens, Simion I Chiosea, Bibiana Purgina, William Carroll, Eben Rosenthal, Anthony Morlandt, Thom Loree, Margaret S Brandwein-Weber
BACKGROUND: The Risk Model is a validated prognostic schema for patients with oral cavity squamous carcinoma. Here, we examine the relationship between Worst Pattern of Invasion-type 5 (WPOI-5) and occult cervical metastases, and also present an interim observational analysis of the impact of adjuvant radiotherapy on patients with low-stage oral cancer classified as either high risk or WPOI-5 alone. METHODS: There were 323 patients with T1 T2 cNo oral cavity squamous carcinoma treated by primary resection, 152 of whom also underwent elective neck dissection (END)...
March 28, 2017: Head & Neck
https://www.readbyqxmd.com/read/28370624/developing-a-risk-stratification-tool-for-audit-of-outcome-after-surgery-for-head-and-neck-squamous-cell-carcinoma
#14
David F Tighe, Alan J Thomas, Isabel Sassoon, Robin Kinsman, Mark McGurk
BACKGROUND: Patients treated surgically for head and neck squamous cell carcinoma (HNSCC) represent a heterogeneous group. Adjusting for patient case mix and complexity of surgery is essential if reporting outcomes represent surgical performance and quality of care. METHODS: A case note audit totaling 1075 patients receiving 1218 operations done for HNSCC in 4 cancer networks was completed. Logistic regression, decision tree analysis, an artificial neural network, and Naïve Bayes Classifier were used to adjust for patient case-mix using pertinent preoperative variables...
March 29, 2017: Head & Neck
https://www.readbyqxmd.com/read/28370375/radiofrequency-heating-studies-on-anesthetized-swine-using-fractionated-dipole-antennas-at-10-5-t
#15
Yiğitcan Eryaman, Russell L Lagore, M Arcan Ertürk, Lynn Utecht, Patrick Zhang, Angel Torrado-Carvajal, Esra Abaci Türk, Lance DelaBarre, Gregory J Metzger, Gregor Adriany, Kâmil Uğurbil, J Thomas Vaughan
PURPOSE: To validate electromagnetic and thermal simulations with in vivo temperature measurements, and to demonstrate a framework that can be used to predict temperature increase caused by radiofrequency (RF) excitation with dipole transmitter arrays. METHODS: Dipole arrays were used to deliver RF energy in the back/neck region of the swine using different RF excitation patterns (n = 2-4 per swine) for heating. The temperature in anesthetized swine (n = 3) was measured using fluoroscopic probes (n = 12) and compared against thermal modeling from animal-specific electromagnetic simulations...
March 31, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28368264/validating-neck-circumference-and-waist-circumference-as-anthropometric-measures-of-overweight-obesity-in-adolescents
#16
Lipilekha Patnaik, Sumitra Pattnaik, E Venkata Rao, Trilochan Sahu
OBJECTIVE: To measure neck circumference and waist circumference, to compare it between normal and overweight/obese adolescents, and to validate these with body mass index. METHODS: This crosssectional study was conducted in 1800 school-going adolescents. Body mass index, waist circumference and neck circumference were measured. Independent samples t-test and Pearson's correlation were used as tests of significance to analyze quantitative data. RESULTS: Positive correlation of neck circumference and waist circumference with body mass index was observed...
March 29, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28361059/in-vitro-prediction-of-breast-cancer-therapy-toxicity
#17
Michael J McKay, Jezzie Maneerat, Timothy M McKay, Jeremy N McKay, Reza Masoud-Rahbari
BACKGROUND: Understanding the basis of clinical radiosensitivity is a key goal of radiation research. In this study, we used the limiting dilution assay (LDA) to analyze in vitro radiosensitivity of cell lines from individuals with breast and other cancers, who had been treated with ionizing radiation, and who either had a non-radiosensitive (RS) radiation response or who were clinically RS. METHODS: Lymphoblastoid cell lines (LCLs) were created from 29 cancer patients including 19 RS patients, 10 controls who had not developed severe normal tissue reactions, and 1 ataxia telangiectasia RS control cell line...
March 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28359640/headless-compression-screw-versus-kirschner-wire-fixation-for-metacarpal-neck-fractures-a-biomechanical-study
#18
Daniel M Avery, Stephen Klinge, Felix Dyrna, Leo Pauzenberger, David Lam, Mark Cote, Jessica DiVenere, Elifho Obopilwe, Augustus Mazzocca, Craig Rodner
PURPOSE: This study aimed to determine the biomechanical stability of headless compression screws in the fixation of metacarpal neck fractures and to compare them with another common, less invasive form of fixation, K-wires. The hypothesis was that headless compression screws would show higher stiffness and peak load to failure than K-wire fixation. METHODS: Eight matched-paired hands (n = 31), using the ring and little finger metacarpals, had metacarpal fractures simulated at the physeal scar...
March 27, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28349777/aortic-curvature-is-a-predictor-of-late-type-ia-endoleak-and-migration-after-endovascular-aneurysm-repair
#19
Richte C L Schuurmann, Kim van Noort, Simon P Overeem, Kenneth Ouriel, William D Jordan, Bart E Muhs, Yannick 't Mannetje, Michel Reijnen, Bram Fioole, Çağdaş Ünlü, Peter Brummel, Jean-Paul P M de Vries
PURPOSE: To evaluate the association between aortic curvature and other preoperative anatomical characteristics and late (>1 year) type Ia endoleak and endograft migration in endovascular aneurysm repair (EVAR) patients with hostile necks. METHODS: Eight high-volume EVAR centers contributed 116 EVAR patients (mean age 81±7 years; 103 men) to the study: 36 patients (mean age 82±7 years; 31 men) with endograft migration and/or type Ia endoleak diagnosed >1 year after the initial EVAR and 80 controls without early or late complications...
March 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28347909/bone-marrow-perfusion-measured-with-dynamic-contrast-enhanced-magnetic-resonance-imaging-is-correlated-to-body-mass-index-in-adults
#20
Jean-François Budzik, Guillaume Lefebvre, Hélène Behal, Sébastien Verclytte, Pierre Hardouin, Pedro Teixeira, Anne Cotten
Bone marrow metabolism is complex and far from being fully understood. Novel aspects, such as the roles of bone marrow adiposity and vascularisation in bone metabolism currently attract attention. There is also a growing interest in the influence obesity might have on bone metabolism. Our objective was to determine the effect of BMI on bone marrow perfusion parameters using dynamic contrast-enhanced magnetic resonance imaging. This prospective monocentric study was approved by our local Ethics committee. Written consent was obtained...
March 24, 2017: Bone
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