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https://www.readbyqxmd.com/read/28809633/the-potential-of-the-icuc%C3%A2-documentation-concept-to-improve-trauma-surgery
#1
P Regazzoni, A A Fernandez Dell'oca, S M Perren
Conventional documentation of surgical procedures using only pre- and postoperative X-ray images and possibly a few intra-operative pictures does not allow secondary analysis of the technical performance in detail. In particular, the quality of the handling of tissues and surgical tools cannot be judged «post hoc», i.e. after the end of the surgical procedure. The invasiveness of the surgical act cannot yet be quantified. Surrogate invasiveness indices have therefore been developed. Furthermore, conventional documentation does not allow evaluation of the proper use of the C-arm both technically and with regard to fluoroscopy time...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28809629/-talar-neck-fractures-treated-using-percutaneous-screw-fixation
#2
R Veselý, M Kelbl, J Kacián, V Hulka, J Kočiš, R Kunovský
PURPOSE OF THE STUDY Closed reduction and percutaneous fixation of nondisplaced talar neck fractures have been applied by some authors. The aim of this paper is to assess the results and complications of this minimally invasive technique. MATERIAL AND METHODS In the period from 2009 to 2014, twenty-one patients with a talar neck fracture were observed after closed reduction and percutaneous screw fixation in the Traumatological Hospital in Brno. The mean age of the patients was 38 years (range 18-56 years)...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28808622/radiation-exposure-and-reduction-in-the-operating-room-perspectives-and-future-directions-in-spine-surgery
#3
REVIEW
Ankur S Narain, Fady Y Hijji, Kelly H Yom, Krishna T Kudaravalli, Brittany E Haws, Kern Singh
Intraoperative imaging is vital for accurate placement of instrumentation in spine surgery. However, the use of biplanar fluoroscopy and other intraoperative imaging modalities is associated with the risk of significant radiation exposure in the patient, surgeon, and surgical staff. Radiation exposure in the form of ionizing radiation can lead to cellular damage via the induction of DNA lesions and the production of reactive oxygen species. These effects often result in cell death or genomic instability, leading to various radiation-associated pathologies including an increased risk of malignancy...
July 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28774707/2d-projection-based-software-application-for-mobile-c-arms-optimises-wire-placement-in-the-proximal-femur-an-experimental-study
#4
B Swartman, D Frere, W Wei, M Schnetzke, N Beisemann, H Keil, J Franke, P A Grützner, S Y Vetter
PURPOSE: A new software application can be used without fixed reference markers or a registration process in wire placement. The aim was to compare placement of Kirschner wires (K-wires) into the proximal femur with the software application versus the conventional method without guiding. As study hypothesis, we assumed less placement attempts, shorter procedure time and shorter fluoroscopy time using the software. The same precision inside a proximal femur bone model using the software application was premised...
July 25, 2017: Injury
https://www.readbyqxmd.com/read/28772395/customized-a-ti6al4v-bone-plate-for-complex-pelvic-fracture-by-selective-laser-melting
#5
Di Wang, Yimeng Wang, Shibiao Wu, Hui Lin, Yongqiang Yang, Shicai Fan, Cheng Gu, Jianhua Wang, Changhui Song
In pelvic fracture operations, bone plate shaping is challenging and the operation time is long. To address this issue, a customized bone plate was designed and produced using selective laser melting (SLM) technology. The key steps of this study included designing the customized bone plate, metal 3D printing, vacuum heat treatment, surface post-processing, operation rehearsal, and clinical application and evaluation. The joint surface of the bone plate was placed upwards with respect to the build platform to keep it away from the support and to improve the quality of the joint surface...
January 4, 2017: Materials
https://www.readbyqxmd.com/read/28771143/equivalent-uniform-square-field-sizes-of-flattening-filter-free-photon-beams
#6
Wolfgang Lechner, Peter Kuess, Dietmar Georg, Hugo Palmans
Various types of treatment units such as CyberKnife, TomoTherapy and C-arm linear accelerators (LINACs) are operated using flattening filter free (FFF) photon beams. Their reference dosimetry, however, is currently based on codes of practice that provide data which were primarily developed and tested for high-energy photon beams with flattering filter (WFF). The aim of this work was to introduce equivalent uniform square field sizes of FFF beams to serve as a basis of a unified reference dosimetry procedure applicable to all aforementioned FFF machines...
August 3, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28768918/advantages-and-disadvantages-of-multi-axis-intraoperative-angiography-unit-for-percutaneous-pedicle-screw-placement-in-the-lumbar-spine
#7
Hiroto Kageyama, Shinichi Yoshimura, Kazutaka Uchida, Tomoko Iida
We analyzed clinical usefulness of the high resolution imaging system in a hybrid operation room (OR) for posterior lumbar interbody fusion. A total of 17 patients with lumbar spondylolisthesis between February 2014 and August 2016 were included. Multi-axis imaging system in a hybrid OR was used in 12 patients (hybrid OR group); the conventional C-arm fluoroscopy, in 5 patients (C-arm group). The time to confirm the first percutaneous pedicle screw (PPS) angle (hybrid OR, 80 vs C-arm, 249 s; P = 0.0026) and the second to the last PPS angle (77 vs 90 s; P = 0...
August 1, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/28768868/the-asymmetric-trimeric-ring-structure-of-the-nucleocapsid-protein-of-tospovirus
#8
Keisuke Komoda, Masanori Narita, Keitaro Yamashita, Isao Tanaka, Min Yao
Tomato spotted wilt virus (TSWV), belonging to the genus Tospovirus of the family Bunyaviridae, causes significant economic damage in several vegetables and ornamental plants worldwide. Similar to that in all other negative-strand RNA viruses, the nucleocapsid (N) protein plays very important roles in their viral life cycle. N proteins protect genomic RNAs by encapsidation and form a viral ribonucleoprotein complex (vRNP) with some RNA-dependent RNA polymerases. Here we show the crystal structure of the N protein from TSWV...
August 2, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28763418/tracking-cumulative-radiation-exposure-in-orthopaedic-surgeons-and-residents-what-dose-are-we-getting
#9
Elizabeth B Gausden, Alexander B Christ, Roseann Zeldin, Joseph M Lane, Moira M McCarthy
BACKGROUND: The purpose of this study was to determine the amount of cumulative radiation exposure received by orthopaedic surgeons and residents in various subspecialties. We obtained dosimeter measures over 12 months on 24 residents and 16 attending surgeons. METHODS: Monthly radiation exposure was measured over a 12-month period for 24 orthopaedic residents and 16 orthopaedic attending surgeons. The participants wore a Landauer Luxel dosimeter on the breast pocket of their lead apron...
August 2, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28761432/effects-of-pulsed-radiofrequency-on-spasticity-in-patients-with-spinal-cord-injury-a-report-of-two-cases
#10
Min Cheol Chang, Yun Woo Cho
Spasticity following spinal cord injury (SCI) results in functional deterioration and reduced quality of life. Herein, we report two SCI patients who presented with good response to pulsed radiofrequency (PRF) for the management of spasticity in the lower extremities. Patient 1 (a 47-year-old man) had complete thoracic cord injury and showed a phasic spasticity on the extensor of both knees (3-4 beats clonus per every 30 seconds) and tonic spasticity (Modified Ashworth Scale: 3) on both hip adductors. Patient 2 (a 64-year-old man) had incomplete cervical cord injury and showed a right ankle clonus (approximately 20 beats) when he walked...
June 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28760084/optimal-dilution-of-contrast-medium-for-quantitating-parenchymal-blood-volume-using-a-flat-panel-detector
#11
Takumi Kuriyama, Nobuyuki Sakai, Mikiya Beppu, Chiaki Sakai, Hirotoshi Imamura, Iwao Kojima, Katsuhiro Masago, Nobuyuki Katakami
Objective Similar to perfusion studies after acute ischemic stroke, measuring cerebral blood volume (CBV) via C-arm computed tomography before and after therapeutic interventions may help gauge subsequent revascularization. We tested serial dilutions of intra-arterial injectable contrast medium (CM) to determine the optimal CM concentration for quantifying parenchymal blood volume by flat-panel detector imaging (FD-PBV). Methods CM was diluted via saline power injector, instituting time delays for FD-PBV studies...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28756581/predelivery-uterine-arteries-embolization-in-patients-affected-by-placental-implant-anomalies
#12
Francesco Giurazza, Giuseppe Albano, Liliana Valentino, Emiliano Schena, Tiziana Capussela, Maria Antonella Di Pasquale, Francesco Di Pietto, Rosaria De Ritis, Gennaro Nasti, Giuseppe Scognamiglio, Raffaella Niola
PURPOSE: The aim of this study is to report on a single center experience of managing patients affected by placenta previa major and/or accretism by embolizing uterine arteries immediately before the cesarean delivery to reduce blood loss and secondary the rate of hysterectomies. MATERIALS AND METHODS: Sixty-nine patients have been prospectively enrolled. Inclusion criteria were radiological diagnosis of placenta anomalies and risk factors for peri/postpartum hemorrhage...
July 29, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28753537/comparison-of-different-approaches-for-measuring-tibial-cartilage-thickness
#13
Jennifer Maier, Marianne Black, Serena Bonaretti, Bastian Bier, Bjoern Eskofier, Jang-Hwan Choi, Marc Levenston, Garry Gold, Rebecca Fahrig, Andreas Maier
Osteoarthritis is a degenerative disease affecting bones and cartilage especially in the human knee. In this context, cartilage thickness is an indicator for knee cartilage health. Thickness measurements are performed on medical images acquired in-vivo. Currently, there is no standard method agreed upon that defines a distance measure in articular cartilage. In this work, we present a comparison of different methods commonly used in literature. These methods are based on nearest neighbors, surface normal vectors, local thickness and potential field lines...
July 28, 2017: Journal of Integrative Bioinformatics
https://www.readbyqxmd.com/read/28739469/acute-venous-iliofemoral-thrombosis-early-surgical-thrombectomy-is-effective-and-durable
#14
Stefan Ockert, Matthias von Allmen, Michaela Heidemann, Juliette Brusa, Jan Duwe, Robert Seelos
BACKGROUND: The first-line recommendation for treatment of acute iliofemoral deep vein thrombosis (IFDVT) is catheter-directed or pharmaco-mechanical thrombolysis (CDT/PCDT). Recent analysis of surgical thrombectomy has shown comparable results. However this procedure is not commonly given as much importance as interventional techniques. We analyzed patient outcome of surgical thrombectomy using modern endovascular techniques in both the short and long term. METHODS: All consecutive patients who underwent surgical thrombectomy at our institution between April 2008 and April 2017 were included...
July 21, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28727778/in-vitro-study-of-accuracy-of-subaxial-cervical-pedicle-screw-insertion-using-calipers-based-on-the-gravity-line
#15
Xiang Yao, Shiqing Liu
OBJECT: There is a high probability of iatrogenic perforation of the vertebral pedicle wall during the application of subaxial cervical pedicle screw (CPS). The goal of this study was to evaluate the accuracy of CPS insertion at C3-C7 in vitro using novel calipers based on the gravity line. METHODS: Nine cadaveric cervical spines underwent computed tomography scanning and preoperative design. A lateral fluoroscopic view was taken to measure the intra-operative sagittal angle by C-arm with hanging cross structured K-wires...
2017: PloS One
https://www.readbyqxmd.com/read/28727710/management-of-symptomatic-tarlov-cysts-a-retrospective-observational-study
#16
Wei Jiang, Zhenming Hu, Jie Hao
BACKGROUND: Symptomatic Tarlov cysts are a common cause of chronic pain. Many methods have been reported to treat this disease, with variable results. Most previous reports concerning the treatment methods of symptomatic Tarlov cysts were either sporadic case reports or series of limited cases. OBJECTIVE: This study aimed to further optimize the management for patients with symptomatic Tarlov cysts (TCs) by analyzing the results of 82 patients who were treated with different strategies...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28720993/inserting-pedicle-screws-in-lumbar-spondylolisthesis-the-easy-bone-conserving-way
#17
Hitesh Lal, Lalit Kumar, Ramesh Kumar, Tankeshwar Boruah, Pankaj Kumar Jindal, Vinod Kumar Sabharwal
BACKGROUND: Pedicle screw fixation in high grade lumbar listhetic vertebral body has been nightmare for Orthopaedic and spine surgeons. This is because of abnormally positioned listhetic pedicles and non-visualization of pedicle in conventional image intensifier (C-Arm). This results into increased surgical time, more blood loss, radiation exposure and more chances of infection. To overcome this problem, we have devised a new Technique of putting of pedicle screw fixation in listhetic vertebrae...
April 2017: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28717867/totally-laparoscopic-living-donor-left-hepatectomy-for-liver-transplantation-in-a-child
#18
Helayel Almodhaiberi, Seok-Hwan Kim, Ki-Hun Kim
BACKGROUND: Minimally invasive surgery has been validated to be a new standard in living donor hepatectomy for adult-to-pediatric transplantation with less morbidity [1]. Laparoscopic donor hepatectomy can reduce the major concerns about pain and morbidity associated with open surgery and a slow return to daily activities of donors [2]. Herein, we present one case of totally laparoscopic living donor left hepatectomy including the middle hepatic vein (MHV). DONOR AND METHOD: A 37-year-old mother volunteered to donate to her 3-year-old son with biliary atresia (PELD score 7)...
July 17, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28712072/clinical-role-of-guidance-by-c-arm-ct-for-125-i-brachytherapy-on-pulmonary-tumors
#19
Dechao Jiao, Kewei Ren, Zongming Li, Shaofeng Shui, Xinwei Han
PURPOSE: To evaluate the clinical value of C-arm CT (CACT)-guided interstitial iodine-125 ((125)I) brachytherapy on pulmonary tumors. MATERIALS AND METHODS: 30 patients with 40 solid pulmonary tumors were enrolled to undergo CACT-guided interstitial (125)I brachytherapy between November 2011 and November 2014. The needle path was planned on a CACT virtual navigation and real-time fluoroscopy system. Technical success, puncture score, procedure time, local control rate (LCR), radiation exposure, complications and survival were investigated...
July 15, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28707955/use-of-fluoroscopy-and-potential-long-term-radiation-effects-on-cataract-formation
#20
Rutveej Patel, Justin Dubin, Ephrem Odoy Olweny, Sammy Elsamra, Robert E Weiss
INTRODUCTION: The lens of the eye is extremely susceptible to radiation and long-term exposure can induce cataract formation. Our objective was to explore the risk of cataract formation for urologists at our institution. METHODS: A retrospective review of a multi-surgeon database of fluoroscopic cases between 10/2013 to 12/2014 was queried. Procedures were performed by different subspecialties and ranged from stent insertion/ureteroscopy to percutaneous nephrolithotomy...
July 14, 2017: Journal of Endourology
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