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https://www.readbyqxmd.com/read/29456947/aesthetic-and-functional-evaluation-of-total-nasal-reconstructions
#1
Luigi Angelo Vaira, Olindo Massarelli, Giovanna Deiana, Silvio Mario Meloni, Giovanni Dell'aversana Orabona, Pasquale Piombino, Giacomo De Riu
The loss of a portion or the totality of the nose has great relevance on the perception of the beauty of a face and can result in a catastrophic quality of life impairment. Several surgical techniques are currently available for the reconstruction of the nasal pyramid. However, there are very few nasal reconstruction quality evaluation protocols that allow the surgeon to choose objectively the best technique for each kind of defects. Six total nasal reconstruction performed in University of Sassari Maxillofacial Unit were evaluated with a protocol that investigate objectively and subjectively the surgical aesthetic and functional outcome...
March 2018: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/29456257/irc-10-216-in-3-d-morphology-of-a-tp-agb-star-envelope
#2
M Guélin, N A Patel, M Bremer, J Cernicharo, A Castro-Carrizo, J Pety, J P Fonfría, M Agúndez, M Santander-García, G Quintana-Lacaci, L Velilla Prieto, R Blundell, P Thaddeus
During their late pulsating phase, AGB stars expel most of their mass in the form of massive dusty envelopes, an event that largely controls the composition of interstellar matter. The envelopes, however, are distant and opaque to visible and NIR radiation: their structure remains poorly known and the mass-loss process poorly understood. Millimeter-wave interferometry, which combines the advantages of longer wavelength, high angular resolution and very high spectral resolution is the optimal investigative tool for this purpose...
February 2018: Astronomy and Astrophysics
https://www.readbyqxmd.com/read/29452956/comparison-of-face-to-face-interaction-and-the-electronic-medical-record-for-venous-thromboembolism-risk-stratification-using-the-2005-caprini-score
#3
Christopher J Pannucci, Kory I Fleming
OBJECTIVE: Perioperative venous thromboembolism (VTE) risk can be quantified with the 2005 Caprini score. The Caprini score has previously been validated by review of the electronic medical record (EMR) in >3000 plastic surgery patients. However, the accuracy of Caprini-based risk stratification using the EMR, as opposed to face-to-face contact with the patient, remains unknown. METHODS: Plastic and reconstructive surgery patients who had surgery under general anesthesia, required postoperative admission, and were started on enoxaparin prophylaxis were identified...
February 13, 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/29447758/nasolacrimal-anatomy-and-haplorhine-origins
#4
James B Rossie, Timothy D Smith, K Christopher Beard, Marc Godinot, Timothy B Rowe
Computed tomography X-ray imaging of the internal face in well-preserved primate fossil crania permits reconstruction of the nature of their nasal anatomy, including some soft-tissue features. These features are diagnostic of the primate suborder Haplorhini, and allow reevaluation of the phylogenetic status of several purported early members of the group. Here we examine the nasolacrimal morphology of a broad sample of extant primates, as well as a number of Paleogene fossils. The extant sample confirms the distinctiveness of the two suborders...
January 2018: Journal of Human Evolution
https://www.readbyqxmd.com/read/29438837/a-modified-multiscale-peak-alignment-method-combined-with-trilinear-decomposition-to-study-the-volatile-heat-labile-components-in-ligusticum-chuanxiong-hort-cyperus-rotundus-rhizomes-by-hs-spme-gc-ms
#5
Min He, Pan Yan, Zhi-Yu Yang, Zhi-Min Zhang, Tian-Biao Yang, Liang Hong
Head Space/Solid Phase Micro-Extraction (HS-SPME) coupled with Gas Chromatography/Mass Spectrometer (GC/MS) was used to determine the volatile/heat-labile components in Ligusticum chuanxiong Hort - Cyperus rotundus rhizomes. Facing co-eluting peaks in k samples, a trilinear structure was reconstructed to obtain the second-order advantage. The retention time (RT) shift with multi-channel detection signals for different samples has been vital in maintaining the trilinear structure, thus a modified multiscale peak alignment (mMSPA) method was proposed in this paper...
February 7, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29438519/convergent-evolution-of-human-isolated-h7n9-avian-influenza-a-viruses
#6
Dan Xiang, Xuejuan Shen, Zhiqing Pu, David M Irwin, Ming Liao, Yongyi Shen
Background: Avian influenza A virus (AIV) H7N9 has caused five epidemic waves of human infections in China since 2013. AIVs may face strong selection to adapt to novel conditions when establishing themselves in humans. In this study, we sought to determine whether adaptive evolution had occurred in human-isolated H7N9 viruses. Methods: We evaluated all available genomes of H7N9 AIVs. Maximum likelihood trees were separately reconstructed for all eight genes. Signals of positive selection and convergent evolution were then detected on branches that lead to changes in host tropism (from avian to human)...
February 9, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29434259/three-dimensional-ultrastructural-analysis-of-the-interface-between-an-implanted-demineralised-dentin-matrix-and-the-surrounding-newly-formed-bone
#7
Ryuichiro Tanoue, Keisuke Ohta, Yoshihiro Miyazono, Joe Iwanaga, Akihiro Koba, Toru Natori, Osamu Iwamoto, Kei-Ichiro Nakamura, Jingo Kusukawa
Previous investigators have reported that transplanted demineralised dentin matrix (DDM) influences bone formation in vivo. However, the specific mechanism of how dentinal tubules contribute to bone formation has not been determined with regard to DDM transplantation therapy. In this study, we ultrastructurally investigated how DDM contacted the surrounding newly formed bone using a scanning electron microscopy (SEM) three-dimensional reconstruction method that is based on focused ion beam slicing and SEM (FIB/SEM)...
February 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29432066/evaluation-of-ct-changes-in-the-head-and-neck-after-cancer-treatment-development-of-a-measurement-tool
#8
Joseph M Aulino, Elizabeth M Wulff-Burchfield, Mary S Dietrich, Sheila H Ridner, Kenneth J Niermann, Jie Deng, Bethany A Rhoten, Jennifer K Doersam, Lee Ann Jarrett, Kyle Mannion, Barbara A Murphy
BACKGROUND: The late effect continuum of lymphedema and fibrosis (LEF) affects more than 70% of patients after treatment for head and neck cancer (HNC). LEF is associated with symptom burden and decreased function and quality of life. Although surveillance imaging is common posttreatment, objective assessment of soft tissues is not, likely due to the lack of objective evaluation methods and understanding of the significance of LEF. We undertook the development of a tool to measure LEF using CT scans in HNC patients...
February 2018: Lymphatic Research and Biology
https://www.readbyqxmd.com/read/29431348/new-technique-for-large-mandibular-and-surrounding-soft-tissue-reconstruction-that-uses-an-intraoral-three-dimensional-distractor-for-one-step-transport-disc-distraction-osteogenesis
#9
Antonio Cortese, Mario Caggiano, Giuseppe Pantaleo, Massimo Amato, Pier P Claudio
BACKGROUND: Mandibular reconstruction after ablative surgery is challenging not only for the amount of bone tissue needed following bone loss after benign or malignant tumor surgical removal, but mainly to reconstruct bone shape and structure necessary for subsequent implant insertion to preserve the function (speech, swallowing and chewing) and aesthetic of the lower face. Several different techniques for maxillary bone defects reconstruction have been described. The aim of our work is to describe a new technique for mandibular reconstruction that uses an intramural distractor, which is placed in one surgical step and without the need for a skin incision...
February 9, 2018: Minerva Stomatologica
https://www.readbyqxmd.com/read/29427442/nose-resurfacing-with-free-fasciocutaneous-flaps-in-burns-patients
#10
Cheng-I Yen, Jui-Yung Yang, Chun-Shin Chang, Jung-Ju Huang, Chih-Wei Wu, Hung-Chang Chen, Shih-Yi Yang, Shu-Yin Chang, Shiow-Shuh Chuang, Yen-Chang Hsiao
BACKGROUND: Nasal reconstruction after burn injury can be challenging due to limited availability of local flaps. We present our experience of free flap reconstruction for full-thickness nasal defect after severe facial burn injury. METHODS: Between August 1998 and September 2015, six patients underwent nasal reconstruction with seven free flaps after burn injury. Among them, flame burn occurred in two patients, chemical burn in two, explosive burn in one, and contact thermal burn in one patient...
February 10, 2018: Microsurgery
https://www.readbyqxmd.com/read/29427389/in-vivo-self-gated-23-na-mri-at-7-t-using-an-oval-shaped-body-resonator
#11
Tanja Platt, Reiner Umathum, Thomas M Fiedler, Armin M Nagel, Andreas K Bitz, Florian Maier, Peter Bachert, Mark E Ladd, Mark O Wielpütz, Hans-Ulrich Kauczor, Nicolas G R Behl
PURPOSE: This work faces three challenges of sodium (23 Na) torso MRI on the way to quantitative 23 Na MRI: Development of a 23 Na radiofrequency transmit and receive coil covering a large part of the human body in width and length for 23 Na MRI at 7 T; reduction of blurring due to respiration in free-breathing 23 Na MRI using a self-gating approach; and reduction of image noise using a compressed-sensing reconstruction. METHODS: An oval-shaped birdcage resonator with a large field of view of (400 mm)3 and a homogeneous transmit and receive field distribution was designed, simulated, and implemented on a 7T MR system...
February 9, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29421860/-face-transplantation-current-status-and-future-developments
#12
REVIEW
Sotirios Tasigiorgos, Branislav Kollar, Nicco Krezdorn, Ericka M Bueno, Stefan G Tullius, Bohdan Pomahac
More than thirty-five facial allograft transplantations (FAT) have been reported worldwide since the pioneering case performed in France in the year 2005. FAT has received tremendous interest by the medical field and the general public while gaining strong support from multiple disciplines as a solution for reconstructing complex facial defects not amenable/responsive to conventional methods. FAT has expanded the frontiers of reconstructive microsurgery, immunology and transplantation, and established its place in the cross section of multiple disciplines...
February 8, 2018: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/29421839/variability-in-the-clock-face-view-description-of-femoral-tunnel-placement-in-acl-reconstruction-using-mri-based-bony-models
#13
Matthew J Kraeutler, Kushal V Patel, Ali Hosseini, Guoan Li, Thomas J Gill, Jonathan T Bravman
Though controversial, the "clock face view" of the intercondylar notch remains a way some surgeons communicate regarding placement of the femoral tunnel in anterior cruciate ligament reconstruction. The purpose of this study was to quantify the differences in angle measurement between several previous descriptions of the clock face view by using a new reference standard. Three-Tesla magnetic resonance imaging (MRI) was used to scan 10 human knees to create three-dimensional MRI-based bony models which were used for measurements...
February 8, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29416163/fibulectomy-for-primary-proximal-fibular-bone-tumors-a-functional-and-clinical-outcome-in-46-patients
#14
Zile Singh Kundu, Milind Tanwar, Parveen Rana, Rajeev Sen
Background: Primary benign and malignant tumors of the proximal fibula are not very common. Upper fibula being an expendable bone; the majority of the primary bone tumors at this site are usually treated with en bloc proximal fibulectomy. There is scarce literature on functional results, difficulties faced during dissection when to preserve or sacrifice common peroneal nerve and importance of lateral collateral ligament repair after proximal fibulectomy. The present study attempts at assessing these variables...
January 2018: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/29408728/impact-of-carpet-construction-on-fluid-penetration-the-case-of-blood
#15
Chengcheng Feng, Stephen Michielsen, Daniel Attinger
Bloodstains and bloodstain patterns are often observed at crime scenes and their analysis through bloodstain pattern analysis (BPA) can assist in reconstructing crime scenes. However, most published work related to BPA only deals with hard, non-porous surfaces and none of the studies have carefully characterized carpets. Soft and porous carpets are often encountered at crime scenes since they are common in American homes accounting for 51% of total U.S. flooring market; this has motivated the research described herein...
February 1, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29406605/salvage-skull-base-reconstruction-in-the-endoscopic-era-vastus-lateralis-free-tissue-transfer
#16
Stephen Y Kang, Antoine Eskander, Ralph Abi Hachem, Enver Ozer, Theodoros N Teknos, Matthew O Old, Daniel M Prevedello, Ricardo L Carrau
BACKGROUND: When locoregional flaps fail to reconstruct the skull base, the microvascular surgeon faces several reconstructive challenges. We present our technique and results of salvage anterior skull base reconstruction utilizing the vastus lateralis free tissue transfer (VLFTT). METHODS: Four patients with anterior skull base defects after previous locoregional flap failure underwent free tissue transfer reconstruction with VLFTT. RESULTS: The success rate of free tissue transfer was 100%...
February 6, 2018: Head & Neck
https://www.readbyqxmd.com/read/29405126/evaluation-of-the-uf-nci-hybrid-computational-phantoms-for-use-in-organ-dosimetry-of-pediatric-patients-undergoing-fluoroscopically-guided-cardiac-procedures
#17
Emily L Marshall, David Borrego, Trung Tran, James C Fudge, Wesley E Bolch
Epidemiologic data demonstrate that pediatric patients face a higher relative risk of radiation induced cancers than their adult counterparts at equivalent exposures. Infants and children with congenital heart defects are a critical patient population exposed to ionizing radiation during life-saving procedures. These patients will likely incur numerous procedures throughout their lifespan, each time increasing their cumulative radiation absorbed dose. As continued improvements in long-term prognosis of congenital heart defect patients is achieved, a better understanding of organ radiation dose following treatment becomes increasingly vital...
February 6, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29399470/combined-all-arthroscopic-hill-sachs-remplissage-latarjet-and-bankart-repair-in-patients-with-bipolar-glenohumeral-bone-loss
#18
David Saliken, Vincent Lavoué, Christophe Trojani, Jean-François Gonzalez, Pascal Boileau
Patients presenting with recurrent shoulder instability and bipolar glenohumeral bone loss are at risk of failed standard soft-tissue repair techniques. Even isolated bony-stabilization procedures such as the Latarjet or remplissage technique may not provide sufficient stability in the face of combined bone loss. We use a combined all-arthroscopic remplissage, Latarjet, and Bankart repair for patients with significant combined glenohumeral bone loss and/or in the revision setting. This allows reconstruction of both the Hill-Sachs and glenoid bone defects and repair of the capsulolabral complex in a minimally invasive manner...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29396606/3d-printed-models-in-mandibular-reconstruction-with-bony-free-flaps
#19
Banaszewski Jacek, Pabiszczak Maciej, Pastusiak Tomasz, Buczkowska Agata, Kuczko Wiesław, Wichniarek Radosław, Górski Filip
The aim of the study was to compare two types of mandible reconstructive operations with scapula and fibula free flaps: procedures with 3-D models from thermoplastic materials and conventional planning surgeries. 8 patients were treated due to an advanced oral cavity squamous cell carcinoma. In four patients with a mandibular defect, a physical 3-D model consisting of the reconstructed and unaffected sites was prepared for a reconstruction protocol. The 3-D models were designed based to high resolution CT scans...
February 2, 2018: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/29395446/management-of-self-inflicted-gunshot-wounds-to-the-face-retrospective-review-from-a-single-tertiary-care-trauma-centre
#20
J A Murphy, S R McWilliams, M Lee, G Warburton
There are limited published data about the surgical management of self-inflicted facial gunshot wounds. The aim of this retrospective study was to review our management of subjects who initially survive such a wound and were admitted to a tertiary care trauma centre between 2002 and 2012. Only subjects with definitive evidence of a self-inflicted facial gunshot wound and who were admitted alive were included. Data collected included personal and clinical details, characteristics of the gunshot wound, and medical and surgical management...
January 27, 2018: British Journal of Oral & Maxillofacial Surgery
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