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https://www.readbyqxmd.com/read/28742786/proper-distal-placement-of-tibial-nail-improves-rate-of-malalignment-for-distal-tibia-fractures
#1
Konstantinos Triantafillou, Eric Barcak, Arturo Villarreal, Cory Collinge, Edward Perez
OBJECTIVES: We hypothesize that the anatomic center of the distal tibia is just lateral and anterior to the center of the distal tibia articular surface in the coronal and sagittal planes respectively, and that placement of the nail along this axis results in improved rates of malalignment when treating distal tibia fractures. DESIGN: Retrospective study SETTING:: One level I and one level II trauma center PATIENTS/PARTICIPANTS:: 203 distal tibia fractures treated with IMN (primary cohort) whose main fracture line extended within 5 cm of the plafond to evaluate the rate of malalignment with distal nail placement...
July 24, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28725497/effect-of-screw-perpendicularity-on-compression-in-scaphoid-waist-fractures
#2
Morgan M Swanstrom, Kyle W Morse, Joseph D Lipman, Krystle A Hearns, Michelle G Carlson
Background  Central and perpendicular (PERP) screw orientations have each been described for scaphoid fracture fixation. It is unclear, however, which orientation produces greater compression. Questions/Purposes  This study compares compression in scaphoid waist fractures with screw fixation in both PERP and pole-to-pole (PTP) configurations. PERP orientation was hypothesized to produce greater compression than PTP orientation. Methods  Ten preoperative computed tomography scans of scaphoid waist fractures were classified by fracture type and orientation in the coronal and sagittal planes...
August 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/28716090/clinical-workflow-for-mr-only-simulation-and-planning-in-prostate
#3
Neelam Tyagi, Sandra Fontenla, Michael Zelefsky, Marcia Chong-Ton, Kyle Ostergren, Niral Shah, Lizette Warner, Mo Kadbi, Jim Mechalakos, Margie Hunt
PURPOSE: To describe the details and experience of implementing a MR-only workflow in the clinic for simulation and planning of prostate cancer patients. METHODS: Forty-eight prostate cancer patients from June 2016 - Dec 2016 receiving external beam radiotherapy were scheduled to undergo MR-only simulation. MR images were acquired for contouring (T2w axial, coronal, sagittal), synthetic-CT generation (3D FFE-based) and fiducial identification (3D bFFE-based). The total acquisition time was 25 min...
July 17, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28714067/evaluation-of-plastic-scintillator-detector-for-small-field-stereotactic-patient-specific-quality-assurance
#4
Yujiao Qin, Stephen J Gardner, Joshua Kim, Yimei Huang, Ning Wen, Anthony Doemer, Indrin J Chetty
PURPOSE: To evaluate the performance of a commercial plastic scintillator detector (PSD) for small-field stereotactic patient-specific quality assurance (QA) measurements using flattening-filter-free beam. METHODS: A total of ten spherical targets (volume range: [0.03cc-2cc]) were planned with two techniques: (1) Dynamic Conformal Arc (DCA-10 plans), and (2) Volumetric Modulated Arc Therapy (VMAT-10 plans). All plans were generated using Varian Eclipse treatment planning system, and AcurosXB v...
July 17, 2017: Medical Physics
https://www.readbyqxmd.com/read/28714043/effects-of-surgically-assisted-rapid-maxillary-expansion-on-mandibular-position-a-three-dimensional-study
#5
Talles Fernando Medeiros Oliveira, Valfrido Antônio Pereira-Filho, Mario Francisco Real Gabrielli, Eduardo Sanches Gonçales, Ary Santos-Pinto
BACKGROUND: This study aimed to evaluate three-dimensional changes in mandibular position after surgically assisted rapid maxillary expansion (SARME). METHODS: A retrospective study was carried out with tomographic records of 30 adult patients with maxillary transverse deficiency who underwent SARME. Cone beam computed tomography scans were obtained preoperatively (T1), after expansion (T2) and 6 months after expansion (T3). Mandibular landmarks were measured with respect to axial, sagittal, and coronal planes...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28713746/unicoronal-craniosynostosis-and-plagiocephaly-correction-with-fronto-orbital-bone-remodeling-and-advancement
#6
S M Balaji
The standard surgical treatment for unilateral coronal synostosis is fronoto-orbital advancement. The technique is known for its high recurrence rate and established plagiocephaly remains a challenge. In this case report, the management of a 5-year-old with unicoronal plagiocephaly correction with fronto-orbital bone remodeling and advancement is presented. The previous surgery done at 6 months of age resulted in failure with establishment of hypertelorism and sudden progressive diminishing vision. Furthermore, temporal hallowing was evident in the imaging technique...
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28708792/can-preoperative-ct-scans-be-used-to-predict-facial-nerve-stimulation-following-ci
#7
Jonathan L Hatch, Habib G Rizk, Michael W Moore, Elizabeth E Camposeo, Shaun A Nguyen, Paul R Lambert, Ted A Meyer, Theodore R McRackan
OBJECTIVES: 1) To determine the ability of preoperative computed tomography (CT) to predict facial nerve stimulation (FNS) after cochlear implantation (CI). 2) To recognize the limitations of CT in predicting FNS. STUDY DESIGN: Patient control study. SETTING: Tertiary care academic medical center. SUBJECTS: Adult patients with CI from 2003 to 2015. METHODS: Patients with severe FNS (n = 4) were compared with randomly selected CI patients (n = 28)...
July 13, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28697558/comparative-analysis-of-cortical-microinfarcts-and-microbleeds-using-3-0-tesla-postmortem-magnetic-resonance-images-and-histopathology
#8
Atsushi Niwa, Yuichiro Ii, Akihiro Shindo, Ko Matsuo, Hidehiro Ishikawa, Akira Taniguchi, Shinichi Takase, Masayuki Maeda, Hajime Sakuma, Hiroyasu Akatsu, Yoshio Hashizume, Hidekazu Tomimoto
Microvascular lesions including cortical microinfarctions (CMIs) and cerebral lobar microbleeds (CMBs) are usually caused by cerebral amyloid angiopathy (CAA) in the elderly and are correlated with cognitive decline. However, their radiological-histopathological coincidence has not been revealed systematically with widely used 3-Tesla (3T) magnetic resonance imaging (MRI). The purpose of the present study is to delineate the histopathological background corresponding to MR images of these lesions. We examined formalin-fixed 10-mm thick coronal brain blocks from 10 CAA patients (five were also diagnosed with Alzheimer's disease, three with dementia with Lewy bodies, and two with CAA only) with dementia and six non CAA patients with neurodegenerative disease...
July 5, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28697079/exchange-nailing-for-hypertrophic-femoral-nonunion
#9
Alejandro Marquez-Lara, T David Luo, Rebecca Senehi, Arun Aneja, Hoyt Randy Beard, Eben A Carroll
Exchange nailing has proven to be a reliable surgical technique for the management of aseptic femoral shaft nonunions. Similar to primary intramedullary nail fixation for femur fractures, exchange nailing for aseptic hypertrophic nonunions of the femur relies on successful navigation of the starting point and proper nail trajectory to minimize coronal and sagittal plane deformities. Compared with the supine position, the lateral decubitus position has the advantage of allowing gravity to displace the soft tissue around the piriformis start site to facilitate nail entry...
August 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28692851/a-simple-device-to-convert-a-small-animal-pet-scanner-into-a-multi-sample-tissue-and-injection-syringe-counter
#10
Michael V Green, Jurgen Seidel, Peter L Choyke, Elaine M Jagoda
INTRODUCTION: We describe a simple fixture that can be added to the imaging bed of a small-animal PET scanner that allows for automated counting of multiple organ or tissue samples from mouse-sized animals and counting of injection syringes prior to administration of the radiotracer. The combination of imaging and counting capabilities in the same machine offers advantages in certain experimental settings. METHODS: A polyethylene block of plastic, sculpted to mate with the animal imaging bed of a small-animal PET scanner, is machined to receive twelve 5-ml containers, each capable of holding an entire organ from a mouse-sized animal...
June 3, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/28691454/temperature-changes-of-one-piece-implants-during-the-setting-of-acrylic-resin-temporary-crown-the-effect-of-implant-diameter-an-in-vitro-study
#11
O Cohen, D Lauritano, O Moses, Z Ormianer, H Tal, R Kolerman, F Carinci, S Matalon
The purpose of this work is to evaluate changes in temperature of one-piece titanium implant surface during the setting of acrylic resin temporary crowns and to correlate thermal changes to implant diameter. Thirty-three one-piece implants (ARRP, Alpha-Biotec) were divided into 3 groups according to diameter size (G1=3 mm, G2=3.3 mm, G3=3.6 mm). Implants were mounted on an acrylic glass apparatus. Thermocouples were positioned at the most coronal thread. Lower incisor temporary polycarbonate crowns were filled with 80 μL of self-curing acrylic resin and positioned immediately on the implant abutment...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28689528/five-year-follow-up-of-a-coronally-advanced-flap-over-grafted-bone-and-restorative-composite-in-maxillary-recession-defect
#12
Syeda Mahvash Hussain, Farhan Raza Khan
Periodontal plastic surgery has become a predictable method of managing gingival recession defects. In the current case report, a five-year follow-up of a coronally advanced flap surgery with bone graft along with endodontics and fixed prosthodontic rehabilitation is reported in the maxillary anterior sextant of a middle aged female. The present case demonstrates that deep and wide gingival defects can be treated with coronally positioned surgical flap without a connective tissue graft. Amultidisciplinary management approach was adopted in this case that yielded predictable outcome...
June 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28688117/serologic-evidence-of-west-nile-virus-and-usutu-virus-infections-in-eurasian-coots-in-the-netherlands
#13
S M Lim, M Geervliet, J H Verhagen, G J D M Müskens, F A Majoor, A D M E Osterhaus, B E E Martina
West Nile virus (WNV) and Usutu virus (USUV) are arboviruses that are maintained in enzootic transmission cycles between mosquitoes and birds and are occasionally transmitted to mammals. As arboviruses are currently expanding their geographic range and emerging in often unpredictable locations, surveillance is considered an important element of preparedness. To determine whether sera collected from resident and migratory birds in the Netherlands as part of avian influenza surveillance would also represent an effective source for proactive arbovirus surveillance, a random selection of such sera was screened for WNV antibodies using a commercial ELISA...
July 7, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28687363/percutaneous-screw-fixation-of-the-iliosacral-joint-a-case-based-preoperative-planning-approach-reduces-operating-time-and-radiation-exposure
#14
T M Ecker, J Jost, J L Cullmann, W D Zech, V Djonov, M J B Keel, L M Benneker, J D Bastian
INTRODUCTION: A preoperative planning approach for percutaneous screw fixation of the iliosacral joint provides specific entry points (EPs) and aiming points (APs) of intraosseous screw pathways (as defined by CT scans) for lateral fluoroscopic projections used intraoperatively. The potential to achieve the recommended EPs and APs, to obtain an ideal screw position (perpendicular to the iliosacral joint), to avoid occurrence of extraosseous screw misplacement, to reduce the operating time and the radiation exposure by utilizing this planning approach have not been described yet...
June 20, 2017: Injury
https://www.readbyqxmd.com/read/28682244/minimizing-the-translation-error-in-the-application-of-an-oblique-single-cut-rotation-osteotomy-where-to-cut
#15
Johannes G G Dobbe, Simon D Strackee, Geert J Streekstra
OBJECTIVE: An oblique single cut rotation osteotomy enables correcting angular bone alignment in the coronal, sagittal and transverse planes, with just a single oblique osteotomy, and by rotating one bone segment in the osteotomy plane. However, translational malalignment is likely to exist if the bone is curved or deformed and the location of the oblique osteotomy is not obvious. METHODS: In this paper we investigate how translational malalignment depends on the osteotomy location...
June 29, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28681754/microsurgical-anatomy-of-the-superior-sagittal-sinus-and-draining-veins
#16
Mariano Anto Bruno-Mascarenhas, Vengalathur G Ramesh, Sundar Venkatraman, Jolarpettai V Mahendran, S Sundaram
BACKGROUND: The superior sagittal sinus and the draining cerebral veins are often encountered during the surgery for parasagittal and falx meningiomas and during the interhemisperic transcallosal approaches. A knowledge about the variations from the normally described anatomy helps in anticipating and avoiding problems related to these structures during surgery. AIM: The normal variations in the disposition of the superior sagittal sinus and the number and direction of the draining veins in the Indian population have been studied...
July 2017: Neurology India
https://www.readbyqxmd.com/read/28676451/reproducibility-of-the-interpretation-of-coronal-3d-ultrasound-view-of-the-uterus-to-evaluate-the-position-of-essure-%C3%A2-3-months-after-hysteroscopic-procedure
#17
P Capmas, I Letendre, J-M Levaillant, F Fuchs, P Panel, G Chambon, V Villefranque, Y Levy-Zauberman, H Fernandez
OBJECTIVE: Three-dimensional sonography is a good alternative method to assess the position of microinserts. Adequate position after three months allows for the interruption of other contraception. Objective is to evaluate inter-observer reproducibility of the interpretation of coronal transvaginal 3D ultrasound view of the uterus to evaluate the position of Essure(®). STUDY DESIGN: Inter-observer reproducibility study. Fifty women underwent successful bilateral placement of microinserts (Essure(®)) by hysteroscopy in the Department of Gynaecology of a teaching hospital and were included in the study...
July 1, 2017: Journal of gynecology obstetrics and human reproduction
https://www.readbyqxmd.com/read/28673676/detection-of-cholesteatoma-high-resolution-dwi-using-rs-epi-and-parallel-imaging-at-3-tesla
#18
O Algin, H Aydın, E Ozmen, G Ocakoglu, S Bercin, D A Porter, A Kutluhan
The purpose of this study is to evaluate the impact of RS-EPI-DWI in the detection of cholesteatoma and to compare with single-shot echo-planar DWI (SS-EPI-DWI). Diffusion-weighted and apparent diffusion-coefficient (ADC) images were obtained using RS-EPI and SS-EPI techniques in 30 patients. Presence of cholesteatoma (3 point scale), amount of artefacts (4 point scale), visibility (4 point scale), and ADC values of the lesions were assessed. The results of both techniques were compared with each other and gold-standard (GS) test results...
June 30, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28657842/journal-club-can-coronal-stir-be-used-as-screening-for-acute-nontraumatic-hip-pain-in-children
#19
Monica M Forbes-Amrhein, Megan B Marine, Matthew R Wanner, Trenton D Roth, Joseph T Davis, Ananth K Ravi, Boaz Karmazyn
OBJECTIVE: The objective of this study is to evaluate whether coronal STIR MRI can be used as a screening test for nontraumatic acute hip pain in children. MATERIALS AND METHODS: From 2008 to 2012, we identified all patients younger than 18 years at our tertiary care facility who underwent pelvic MRI including coronal STIR for the following indications: acute hip pain, limping, or refusal to bear weight. Patients with a history of trauma were excluded. Each MR image was independently reviewed by four radiologists who were blinded to the clinical outcome...
June 28, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28655628/tunnel-positioning-assessment-after-anterior-cruciate-ligament-reconstruction-at-12-months-comparison-between-3d-ct-and-3d-mri-a-pilot-study
#20
Emmanuel Ducouret, Philippe Loriaut, Patrick Boyer, Anne Perozziello, Lionel Pesquer, Charbel Mounayer, Benjamin Dallaudiere
BACKGROUND: Tunnel positioning assessment is a major issue after anterior cruciate ligament (ACL) reconstruction surgery. Historically, it used plain X-ray and, more recently, CT with 3D reconstruction. MRI is a reliable method of assessing ACL graft integrity and postoperative complications. To our knowledge, there have been no studies of efficacy in tunnel positioning assessment. The aim of this study was to assess the efficacy of 3D MRI in assessing femoral and tibial tunnel positioning after ACL reconstruction...
June 24, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
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