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https://www.readbyqxmd.com/read/28334406/male-and-female-cervical-spine-biomechanics-and-anatomy-implication-for-scaling-injury-criteria
#1
Narayan Yoganandan, Cameron R Bass, Liming Voo, Frank A Pintar
There is an increased need to develop female-specific injury criteria and anthropomorphic test devices (dummies) for automotive and military environments, especially as women take occupational roles traditionally reserved for men. Although some exhaustive reviews on the biomechanics and injuries of the human spine have appeared in clinical and bioengineering literatures, focus on the difference between male and female cervical spine responses and characteristics has largely been ignored. Current neck injury criteria for automotive dummies for assessing crashworthiness and occupant safety are obtained from animal and human cadaver experiments, computational modeling and human volunteer studies...
March 23, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28328591/accidental-cannulation-of-persistent-left-superior-vena-cava-in-a-case-of-absent-right-internal-jugular-vein-role-of-ultrasonography-and-x-ray
#2
Nilesh B Sonawane, Falguni Rajendra Shah, Prakash Jagadish Gawankar
Persistent left superior vena cava is a rare vascular anatomical variant. Although ultrasonography has facilitated the process of central venous catheterization, it cannot be used to locate the tip of a catheter. Postprocedure chest X-ray is desirable for locating the course and tip of the catheter. In our case, initial ultrasonography demonstrated the absence of the right internal jugular vein. This prompted insertion of a central venous catheter on the left side of the neck in the presence of normal vascular anatomy...
March 15, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28326215/osteoradionecrosis-of-the-temporal-bone-leading-to-cerebellar-abscess
#3
Thomas B Layton
Squamous cell carcinoma of the temporal bone is a rare and destructive malignancy and represents both diagnostic and therapeutic challenge. The complex regional anatomy of the temporal bone requires equally intricate surgical techniques to adequately resect the tumour mass during surgical excision. Adjuvant radiotherapy is offered to patients with advanced disease and has been showed to confer a survival benefit in carefully selected patients. One feared complication of radiotherapy is osteoradionecrosis and is a major obstacle faced in the treatment of head and neck cancers...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/28325670/neck-of-femur-fractures-in-the-elderly-does-every-hour-to-surgery-count
#4
Natasha Morrissey, Efthymios Iliopoulos, Ahmad Wais Osmani, Kevin Newman
OBJECTIVES: To determine if early surgery before 12h confers a survival or length of stay benefit for patients with neck of femur (NOF) fractures. DESIGN: Retrospective review of prospectively collected data. SETTING: District general hospital. PATIENTS: 1913 patients aged over 60 admitted with a fractured NOF who underwent surgery between 2011 and 2015. Mean age was 83.9 years. 73.7% were female. INTERVENTION: Patients had surgery for fractured NOF with data collected on demographics, mortality and length of stay...
March 6, 2017: Injury
https://www.readbyqxmd.com/read/28322125/anatomy-specific-virtual-reality-simulation-in-temporal-bone-dissection
#5
Garrett D Locketz, Justin T Lui, Sonny Chan, Kenneth Salisbury, Joseph C Dort, Patricia Youngblood, Nikolas H Blevins
Objective To evaluate the effect of anatomy-specific virtual reality (VR) surgical rehearsal on surgeon confidence and temporal bone dissection performance. Study Design Prospective pre- and poststudy of a novel virtual surgical rehearsal platform. Setting Academic otolaryngology-head and neck surgery residency training programs. Subjects and Methods Sixteen otolaryngology-head and neck surgery residents from 2 North American training institutions were recruited. Surveys were administered to assess subjects' baseline confidence in performing 12 subtasks of cortical mastoidectomy with facial recess...
March 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28321484/rhabdomyolysis-resulting-in-concurrent-horner-s-syndrome-and-brachial-plexopathy-a-case-report
#6
Susan C Lee, Christian Geannette, Scott W Wolfe, Joseph H Feinberg, Darryl B Sneag
This case report describes a 29-year-old male who presented with immediate onset of Horner's syndrome and ipsilateral brachial plexopathy after sleeping with his arm dangling outside a car window for 8 h. Outside workup and imaging revealed rhabdomyolysis of the left neck musculature. Subsequent electrodiagnostic testing and high-resolution brachial plexus magnetic resonance imaging at the authors' institution attributed the Horner's syndrome and concurrent brachial plexopathy to rhabdomyolysis of the longus colli and scalene musculature, which had compressed-and consequently scar tethered-the cervical sympathetic trunk and brachial plexus...
March 20, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28319260/the-second-time-flap-from-the-previously-used-anterior-thigh-donor-site-for-head-and-neck-microsurgical-reconstruction
#7
Nidal Farhan Al Deek, Chun-Ta Liao, Shiang-Fu Huang, Chung-Jan Kan, Kai-Ping Chang, Ku-Hao Fang, Chung-Kan Tsao
BACKGROUND: Multiple free tissue transfer from the same donor site is not well described for microsurgical head and neck reconstruction. METHODS: Between (8/2011 and 11/2012), 103 patients received 103 free ALT flaps for head and neck reconstruction; flaps were called first-time ALT flaps. Intra-operative findings were used to assess the presence of a favorable anatomy for a future second flap from the same donor site. And, between 9/2009 and 12/2013, second-time flaps from previously used anterior thighs were attempted either freely or guided by the intra-operative data from the previous surgery...
March 20, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28317555/the-cervical-spine-of-australopithecus-sediba
#8
Marc R Meyer, Scott A Williams, Peter Schmid, Steven E Churchill, Lee R Berger
Cervical vertebrae are rare in the early hominin fossil record, presenting a challenge for understanding the evolution of the neck and head carriage in hominin evolution. Here, we examine the cervical vertebrae of Australopithecus sediba, which unlike other South African taxa is known from associated cervical vertebrae. The A. sediba cervical vertebrae exhibit human-like values for wedging, pedicle cross-sectional areas, and articular facet heights, indicating reduced ventral loading relative to African apes...
March 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28303335/treatment-selection-for-urolithiasis-percutaneous-nephrolithomy-ureteroscopy-shock-wave-lithotripsy-and-active-monitoring
#9
Mahesh Desai, Yinghao Sun, Noor Buchholz, Andrew Fuller, Tadashi Matsuda, Brian Matlaga, Nicole Miller, Damien Bolton, Mohammad Alomar, Arvind Ganpule
Urolithiasis is a significant worldwide source of morbidity, constituting a common urological disease that affects between 10 and 15% of the world population. Recent technological and surgical advances have replaced the need for open surgery with less invasive procedures. The factors which determine the indications for percutaneous nephrolithotomy include stone factors (stone size, stone composition, and stone location), patient factors (habitus and renal anomalies), and failure of other treatment modalities (ESWL and flexible ureteroscopy)...
March 16, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/28298064/radiographic-hip-anatomy-correlates-with-range-of-motion-and-symptoms-in-national-hockey-league-players
#10
Christopher M Larson, James R Ross, Andrew W Kuhn, Donnie Fuller, David M Rowley, M Russell Giveans, Rebecca M Stone, Asheesh Bedi
BACKGROUND: Hip disorders in athletes have been increasingly recognized. PURPOSE: To characterize radiographic hip anatomy for National Hockey League (NHL) players and correlate it with hip range of motion and hip symptoms and/or surgery. STUDY DESIGN: Cross-sectional study; Level of evidence, 3. METHODS: Fifty-nine professional hockey players (118 hips) with 1 NHL organization (mean age, 24.2 years; range, 18-36) prospectively underwent history and physician examination by 2 independent orthopaedic surgeons...
February 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28297354/quantitative-evaluation-of-patient-setup-uncertainty-of-stereotactic-radiotherapy-with-the-frameless-6d-exactrac-system-using-statistical-modeling
#11
Vance Keeling, Sabbir Hossain, Hosang Jin, Ozer Algan, Salahuddin Ahmad, Imad Ali
The purpose of this study is to evaluate patient setup accuracy and quantify individual and cumulative positioning uncertainties associated with different hardware and software components of the stereotactic radiotherapy (SRS/SRT) with the frameless 6D ExacTrac system. A statistical model is used to evaluate positioning uncertainties of the different components of SRS/SRT treatment with the Brainlab 6D ExacTrac system using the positioning shifts of 35 patients having cranial lesions. All these patients are immobilized with rigid head-and-neck masks, simulated with Brainlab localizer and planned with iPlan treatment planning system...
May 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28297277/application-programming-in-c-environment-with-recorded-user-software-interactions-and-its-application-in-autopilot-of-vmat-imrt-treatment-planning
#12
Henry Wang, Lei Xing
An autopilot scheme of volumetric-modulated arc therapy (VMAT)/intensity-modulated radiation therapy (IMRT) planning with the guidance of prior knowledge is established with recorded interactions between a planner and a commercial treatment planning system (TPS). Microsoft (MS) Visual Studio Coded UI is applied to record some common planner-TPS interactions as subroutines. The TPS used in this study is a Windows-based Eclipse system. The interactions of our application program with Eclipse TPS are realized through a series of subroutines obtained by prerecording the mouse clicks or keyboard strokes of a planner in operating the TPS...
November 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28291404/outcomes-and-effectiveness-of-posterior-occipitocervical-fusion-for-suboccipital-spinal-metastases
#13
Panya Luksanapruksa, Jacob M Buchowski, Neill M Wright, Frank H Valone, Colleen Peters, David B Bumpass
OBJECTIVE The incidence of suboccipital spinal metastases is rare but has increased given cancer patients' longer life expectancies. Operative treatment in this region is often challenging because of limited fixation points due to tumor lysis, as well as adjacent neural and vascular anatomy. Few studies have reported on this population of cancer patients. The purpose of this study was to evaluate clinical outcomes and complications of patients with suboccipital spinal metastases who had undergone posterior occipitocervical fixation...
February 24, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28290710/formation-and-assessment-of-a-novel-surgical-video-atlas-for-thyroidectomy
#14
Sandip P Tarpada, Wayne D Hsueh, Seth B Newman, Marc J Gibber
Within surgery, interactive media have previously been used to educate medical students and residents. Here, we develop and assess the efficacy of a novel surgical video atlas in teaching surgically relevant head and neck anatomy to medical students. A total thyroidectomy was recorded intraoperatively and subsequently narrated to develop a video atlas. Medical students were recruited and randomly assigned to one of the two interventions. One group was assigned to the video atlas, while the other was supplied with a traditional textbook atlas...
March 14, 2017: Journal of Visual Communication in Medicine
https://www.readbyqxmd.com/read/28286380/recent-advances-in-face-lift-to-achieve-facial-balance
#15
REVIEW
Velupillai Ilankovan
INTRODUCTION: Facial balance is achieved by correction of facial proportions and the facial contour. Ageing affects this balance in addition to other factors. We have strived to inform all the recent advances in providing this balance. METHOD: The anatomy of ageing including various changed in clinical features are described. The procedures are explained on the basis of the upper, middle and lower face. RESULTS: Different face lift, neck lift procedures with innovative techniques are demonstrated...
March 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28283706/three-dimensional-analysis-of-the-proximal-anterior-femoral-flare-and-torsion-anatomic-bases-for-metaphyseally-fixed-short-stems-design
#16
Elhadi Sariali, Yohan Knaffo
PURPOSE: The use of femoral stems with a short metaphyseal fixation may lead to fractures or subsidence. Such failures may be related to a mismatch between the torsions or the sagittal flares of the stem and the femur. The goal of our study was to perform a 3D analysis of the proximal metaphyseal femur anatomy with a special focus on the anterior proximal flare and torsion. Such data may help to detect the outlier patients for whom a short metaphyseal fixation should be avoided. METHODS: A prospective study included 80 consecutive patients who underwent a primary cementless THA with a 3D CT-scan based pre-operative planning...
March 10, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28263428/longitudinal-monitoring-of-the-head-and-neck-lymphatics-in-response-to-surgery-and-radiation
#17
John C Rasmussen, I-Chih Tan, Syed Naqvi, Melissa B Aldrich, Erik A Maus, Angel I Blanco, Ron J Karni, Eva M Sevick-Muraca
BACKGROUND: The lymphatic vasculature provides a route for cancer metastases, and its dysfunction after cancer treatment can result in lymphedema. However, changes in the lymphatics before, during, and after surgery and radiation remain unclear. METHODS: Near-infrared fluorescence lymphatic imaging was performed before and after lymph node dissection and fractionated radiotherapy to assess changes in external lymphatic function. RESULTS: Patients who underwent both lymph node dissection and radiotherapy developed lymphatic dermal backflow on treated sides ranging from days after the start of radiotherapy to weeks after its completion, whereas contralateral regions that were not associated with lymph node dissection but also treated with radiotherapy experienced no such changes in external lymphatic anatomies...
March 6, 2017: Head & Neck
https://www.readbyqxmd.com/read/28258015/influence-of-anatomic-angulations-in-chimney-and-fenestrated-endovascular-aneurysm-repair
#18
Caroline Caradu, Xavier Bérard, Dominique Midy, Eric Ducasse
BACKGROUND: Fenestrated (F-) endovascular aneurysm repair (EVAR)'s lack of widespread availability encouraged alternative strategies. Chimney graft (CG)-EVAR has spread when costs, manufacturing delays or anatomy preclude F-EVAR. Our objective was to evaluate CG-EVAR and F-EVAR's outcomes depending on the angulation of target renal arteries and hostility of iliac accesses to determine the potential impact of a choice made between the two techniques based upon preoperative anatomic criteria...
February 28, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28256151/the-emerging-potential-of-magnetic-resonance-imaging-in-personalizing-radiotherapy-for-head-and-neck-cancer-an-oncologist-s-perspective
#19
Kee H Wong, Rafal Panek, Shreerang A Bhide, Christopher M Nutting, Kevin J Harrington, Katie L Newbold
Head and neck cancer (HNC) is a challenging tumour site for radiotherapy delivery owing to its complex anatomy and proximity to organs at risk (OARs) such as the spinal cord and optic apparatus. Despite significant advances in radiotherapy planning techniques, radiation-induced morbidities remain substantial. Further improvement would require high-quality imaging and tailored radiotherapy based on intratreatment response. For these reasons, the use of MRI in radiotherapy planning for HNC is rapidly gaining popularity...
March 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28247103/anatomy-of-the-fasciae-and-fascial-spaces-of-the-maxillofacial-and-the-anterior-neck-regions
#20
REVIEW
Seiichiro Kitamura
This review provides an overview of comprehensive knowledge regarding the anatomy of the fasciae and fascial spaces of the maxillofacial and the anterior neck regions, principally from the standpoint of oral surgery, whose descriptions have long been puzzling and descriptively much too complex. The maxillofacial and the anterior neck regions are divided into four portions: the portions superficial and deep to the superficial layer of the deep cervical fascia (SfDCF) including its rostral extension to the face, the intermediate portion sandwiched by the splitting SfDCF, and the superficial portion peculiar to the face where the deep structures open on the body surface to form the oral cavity...
February 28, 2017: Anatomical Science International
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