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https://www.readbyqxmd.com/read/29775146/setting-pressure-can-change-the-size-and-shape-of-mri-artifacts-caused-by-adjustable-shunt-valves-a-study-of-the-4-newest-models
#1
Daiki Uchida, Yuki Amano, Hirokazu Nakatogawa, Takayuki Masui, Naoto Ando, Teiji Nakayama, Haruhiko Sato, Tetsuro Sameshima, Tokutaro Tanaka
OBJECTIVE Adjustable shunt valves that have been developed for the management of hydrocephalus all rely on intrinsically magnetic components, and artifacts with these valves on MRI are thus inevitable. The authors have previously reported that the shapes of shunt artifacts differ under different valve pressures with the proGAV 2.0 valve. In the present study the authors compared the size and shape of artifacts at different pressure settings with 4 new-model shunt valves. METHODS The authors attached 4 new models of MRI-resistant shunt valve to the temporal scalp of a healthy volunteer: the proGAV 2...
May 18, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29719553/47-consecutive-cases-of-pipeline-flex-flow-diversion-utilizing-a-novel-large-bore-intracranial-intermediate-catheter-nuances-and-institutional-experience-with-the-syphontrak
#2
Li-Mei Lin, Bowen Jiang, Matthew T Bender, Erick M Westbroek, Jessica K Campos, Rafael J Tamargo, Judy Huang, Alexander L Coon, Geoffrey P Colby
Background: The increasing complexity of modern neurointerventions has necessitated a shift in intracranial access techniques towards more robust distal support platforms. Here we present our experience with the Syphontrak Support Catheter (Codman Neuro, Raynham, MA, USA) in the triaxial platform for the implantation of the second-generation Pipeline Flex embolization device (PED Flex; Medtronic Neurovascular, Irvine, CA, USA). Methods: We retrospectively identified patients who underwent PED Flex treatment utilizing the Syphontrak at a single institution...
April 2018: Interventional Neurology
https://www.readbyqxmd.com/read/29496078/radiographic-patterns-of-osteoporotic-proximal-humerus-fractures
#3
Stefano Carbone, Riccardo Mezzoprete, Matteo Papalia, Valerio Arceri, Andrea Carbone, Stefano Gumina
OBJECTIVE: The objectives of the study were: a) to identify osteoporotic proximal humerus fractures in a large consecutive series of patients; b) to identify radiographic fracture patterns among osteoporotic and non-osteoporotic proximal humerus fractures; and c) to calculate intra- and inter-observer reliability of assessment of osteoporosis and of radiographic fracture patterns. METHODS: This was a prospective observational study of patients admitted to the emergency department affected by a proximal humerus fracture between June 2014 and June 2016...
March 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/29461404/use-of-patient-related-outcomes-after-orthopaedic-trauma-helpful-or-not-so-much
#4
William T Obremskey, Thomas F Higgins, Janet Pryu Bettger, Mark S Vrahas, Douglas W Lundy
Over 100 years ago, the orthopaedic surgeon, Ernest Codman, recommended that surgeons and hospitals be paid by the "end result." Healthcare Reform is moving to value over volume, and patient-reported outcomes (PROs) are 1 measure of quality and outcomes that are becoming pervasive. In this study, the current status of patient-reported outcomes and their use in orthopaedic trauma was reviewed. The contributors presented the state of PRO measurements at the Basic Science Focus Forum at the OTA Annual Meeting in 2016...
March 2018: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/29298858/in-vitro-measurement-of-the-permeability-of-endovascular-coils-deployed-in-cerebral-aneurysms
#5
Chander Sadasivan, Erica Swartwout, Ari D Kappel, Henry H Woo, David J Fiorella, Barry B Lieber
BACKGROUND AND PURPOSE: Aneurysm recurrence is the primary limitation of endovascular coiling treatment for cerebral aneurysms. Coiling is currently quantified by a volumetric porosity measure called packing density (pd). Blood flow through a coil mass depends on the permeability of the coil mass, and not just its pd. The permeability of coil masses has not yet been quantified. Here we measure coil permeability with a traditional falling-head permeameter modified to incorporate idealized aneurysms...
January 3, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29281065/usefulness-of-sealants-for-dural-closure-evaluation-in-an-in-vitro-model
#6
Tristan van Doormaal, Ahmet Kinaci, Sander van Thoor, Saskia Redegeld, Wilhelmina Bergmann, Albert van der Zwan
BACKGROUND: Cerebrospinal fluid (CSF) leakage occurs in 4% to 32% of cranial surgeries and is associated with significant patient burden and expense. The use of sealant as an adjunct to primary dural closure is assumed to help prevent CSF leakage. OBJECTIVE: To examine the utility of different sealants for dural closure using an in Vitro model. METHODS: We evaluated 9 commonly used dural sealants, including Tachosil (Takeda Inc, Osaka, Japan), Adherus (Hyperbranch Inc, Durham, North Carolina), Duraform (Codman, Raynham, Massachusetts), Tissudura (Baxter, Deerfield, Illinois), Hemopatch (Baxter), TissuePatchDural (Tissuemed, Leeds, United Kingdom), Tisseel (Baxter), Duragen Secure (Integra, Plainsboro, New Jersey), and Duraseal, (Integra)...
December 21, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29155064/enterprise-deployment-through-pulserider-to-treat-anterior-communicating-artery-aneurysm-recurrence
#7
Iacopo Valente, Nicola Limbucci, Sergio Nappini, Andrea Rosi, Antonio Laiso, Salvatore Mangiafico
BACKGROUND: PulseRider (Pulsar Vascular, Los Gatos, California, USA) is a new endovascular device designed to treat wide-neck bifurcation intracranial aneurysms. Deployment of a stent through a PulseRider to treat an aneurysm's recurrence has never been described before. CASE DESCRIPTION: We report the case of a 55-year-old man who underwent coiling of an 8-mm anterior communicating artery aneurysm with assistance of a PulseRider neck reconstruction device. The 6-month digital subtraction angiography control showed aneurysm recurrence, so we deployed an Enterprise 2 closed-cell stent (Codman, Miami Lakes, Florida, USA) in the A1-A2 segment passing across the previously implanted PulseRider...
February 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29116358/humeral-head-inferior-subluxation-in-proximal-humerus-fractures
#8
Stefano Carbone, Matteo Papalia, Valerio Arceri, Stefano Placidi, Andrea Carbone, Riccardo Mezzoprete
PURPOSE: The objectives of this study are to propose a reliable radiologic method for detecting static inferior subluxation of humeral head, to calculate the relative intra- and inter-observer reliability, and to evaluate its presence pre- and post-surgery. METHODS: This is a retrospective observational study of patients surgically treated for a fracture of the proximal humerus. Fractures were classified using Codman-Lego criteria (radiographic, CT images), osteoporosis was assessed...
November 7, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/29099433/the-anesthesia-records-of-harvey-cushing-and-ernest-codman
#9
Lalitha V Sundararaman, Sukumar P Desai
Hundreds of thousands of anesthesia records are created each day. The earliest records were prepared by 2 medical students in late 19th-century Boston. Ernest Codman and Harvey Cushing went on to become prominent surgeons and contributed much to the safety of the surgical patient. Cushing's career is celebrated due to his associations with William Stewart Halsted, Peter Bent Brigham Hospital, Yale University, in New Haven, Connecticut, and his biography of Sir William Osler. Codman is remembered for introducing the morbidity and mortality conference as well as his drive to improve outcomes and patient safety...
January 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29081013/emerging-technologies-in-flow-diverters-and-stents-for-cerebrovascular-diseases
#10
REVIEW
Michael Karsy, Jian Guan, Andrea A Brock, Anubhav Amin, Min S Park
PURPOSE OF REVIEW: Stents and flow diverters have revolutionized the treatment of cerebrovascular disease. Guglielmi coils, flexible microcatheters, and first-generation intracranial stents, such as Neuroform (Stryker Neurovascular) and Enterprise stents (Codman/DePuy-Synthes), have paved the way for the development of the Pipeline Embolization Device (PED) (ev3/Covidien/Medtronic) and other endovascular approaches. RECENT FINDINGS: This review discusses the historical development of flow diverter technologies from the PED to similar devices, such as the Surpass stent (Stryker Neurovascular), the Flow-Redirection Endoluminal Device (FRED; MicroVention, Inc...
October 28, 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/29072964/thoracoscopic-rib-resection-in-children
#11
Dheidan Mufreh Alshammari, Isabelle Talon, Julien Rod, Anne Schneider, Frederic Lavrand, Christian Piolat, Thomas Gelas, Frederic Hameury, Marina Sica, Philippe Gicquel, Valerie Flaum, François Becmeur
OBJECTIVE: The authors present a multicenter retrospective series of different benign rib lesions in children operated on using thoracoscopy. MATERIALS AND METHODS: Between 2005 and 2015, 17 rib resections were performed thoracoscopically, in four French departments of pediatric surgery. Of these 17 cases, 13 exostoses, 2 endochondromas, 1 synostosis, and 1 Cyriax's syndrome were noted. Inclusion criteria were benign tumors or rib anomalies such as synostosis, in children younger than the age of 18 years, and thoracoscopy...
January 2018: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/28988674/quality-improvement-and-patient-safety-reality-and-responsibility-from-codman-to-today
#12
Martin A Koyle, Leah C C Koyle, G Ross Baker
Quality improvement and patient safety (QIPS) has become increasingly important in the practice of medicine, particularly since the Institute of Medicine's report, "To Err is Human." Despite surgery having been initially at the forefront in instituting QIPS, there has been a lag in promoting its importance until recently. A short history of QIPS is presented along with an introduction to the SQUIRE guidelines used for standardizing QIPS publications. As surgeons we are becoming even more accountable in promoting value in health care...
February 2018: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28955511/optimal-guiding-catheter-length-for-endovascular-coiling-of-intracranial-aneurysms-in-anterior-circulation-in-era-of-flourishing-distal-access-system
#13
Zhen Yu Jia, Sang Hun Lee, Young Eun Kim, Joon Ho Choi, Sun Moon Hwang, Ga Young Lee, Jin Ho Youn, Deok Hee Lee
PURPOSE: To determine the minimum required guiding catheter length for embolization of various intracranial aneurysms in anterior circulation and to analyze the effect of various patient factors on the required catheter length and potential interaction with its stability. MATERIALS AND METHODS: From December 2016 to March 2017, 90 patients with 93 anterior circulation aneurysms were enrolled. Three types of guiding catheters (Envoy, Envoy DA, and Envoy DA XB; Codman Neurovascular, Raynham, MA, USA) were used...
September 2017: Neurointervention
https://www.readbyqxmd.com/read/28937198/ernest-amory-codman-award-honoree-furthers-quality-improvement-mission
#14
Carlos A Pellegrini
No abstract text is available yet for this article.
November 2016: Bulletin of the American College of Surgeons
https://www.readbyqxmd.com/read/28878541/an-unusual-localization-of-chondroblastoma-the-triradiate-cartilage-from-a-case-report-a-reconstructive-technique-proposal-with-imaging-evolution
#15
Carmine Zoccali, Francesco Arrigoni, Silvia Mariani, Federico Bruno, Antonio Barile, Carlo Masciocchi
INTRODUCTION: Chondroblastoma (also known as Codman tumor) is a rare intermediate grade cartilaginous neoplasm, representing less than 1% of all primary bone tumors; it characteristically arises in the epiphysis or apophysis of a long bone in young patients, predominantly males. The most frequent location of chondroblastoma is the humerus (70% incidence rate) and more rarely it is located in the pelvis. When it affects the hip, the triradiate cartilage is the most common site. MATERIALS AND METHODS: An unusual case of Chondroblastoma located in the triradiate cartilage is reported...
August 2017: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28795214/derivation-validation-and-application-of-a-pragmatic-risk-prediction-index-for-benchmarking-of-surgical-outcomes
#16
Richard T Spence, David C Chang, Haytham M A Kaafarani, Eugenio Panieri, Geoffrey A Anderson, Matthew M Hutter
BACKGROUND: Despite the existence of multiple validated risk assessment and quality benchmarking tools in surgery, their utility outside of high-income countries is limited. We sought to derive, validate and apply a scoring system that is both (1) feasible, and (2) reliably predicts mortality in a middle-income country (MIC) context. METHODS: A 5-step methodology was used: (1) development of a de novo surgical outcomes database modeled around the American College of Surgeons' National Surgical Quality Improvement Program (ACS-NSQIP) in South Africa (SA dataset), (2) use of the resultant data to identify all predictors of in-hospital death with more than 90% capture indicating feasibility of collection, (3) use these predictors to derive and validate an integer-based score that reliably predicts in-hospital death in the 2012 ACS-NSQIP, (4) apply the score in the original SA dataset and demonstrate its performance, (5) identify threshold cutoffs of the score to prompt action and drive quality improvement...
February 2018: World Journal of Surgery
https://www.readbyqxmd.com/read/28699020/manipulation-under-anaesthetic-for-frozen-shoulder-using-codman-s-paradox-a-safe-and-early-return-of-function
#17
Oren Tsvieli, Ehud Atoun, Paolo Consigliere, Ioannis Polyzois, Joanna Walecka, Rajib Pradhan, Giorgio Ippolito, Ehud Rath, Ofer Levy
PURPOSE: Although previously frozen shoulder was thought to resolve by two to three years, recent studies demonstrated the symptoms can remain for much longer. Manipulation under anaesthetic (MUA) has been shown to be successful in relieving pain and restoring function. Yet, concerns have been raised regarding its safety and the risks of complications. We utilise Codman's paradox to manipulate the shoulder, avoiding rotational torque on the humerus. The aim of our study was to asses shoulder function in the early post MUA period...
February 2018: International Orthopaedics
https://www.readbyqxmd.com/read/28670029/diagnostic-performance-of-magnetic-resonance-imaging-in-the-assessment-of-periosteal-reactions-in-bone-sarcomas-using-conventional-radiography-as-the-reference
#18
José Luiz de Sá Neto, Marcelo Novelino Simão, Michel Daoud Crema, Edgard Eduard Engel, Marcello Henrique Nogueira-Barbosa
OBJECTIVE: To evaluate the performance of magnetic resonance imaging (MRI) in detecting periosteal reactions and to compare MRI and conventional radiography (CR) in terms of the classification of periosteal reactions. MATERIALS AND METHODS: Retrospective study of 42 consecutive patients (mean age, 22 years; 20 men) with a confirmed diagnosis of osteosarcoma or Ewing's sarcoma, MRI and CR images having been acquired pretreatment. Three blinded radiologists detected periosteal reactions and evaluated each periosteal reaction subtype in CR and MRI images: Codman's triangle; laminated; and spiculated...
May 2017: Radiologia Brasileira
https://www.readbyqxmd.com/read/28669466/editorial-commentary-volume-and-outcome-100%C3%A2-years-of-perspective-on-value-from-e-a-codman-to-m-e-porter
#19
EDITORIAL
Jon J P Warner, Laurence D Higgins
Outcome is the numerator for the value equation, with the denominator being cost; measurement of each is essential to determine the most effective care. With regard to both total shoulder arthroplasty and rotator cuff repair, outcomes of low (vs high) volume providers are associated with longer hospital stay, longer length of operating room time, increased hospital complications, and cost. This suggests that volume thresholds are a key to providing greater value. However, this effect can be modified through systematic efforts to measure outcome and thus improve...
July 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28660395/comparison-of-anti-siphon-devices-how-do-they-affect-csf-dynamics-in-supine-and-upright-posture
#20
COMPARATIVE STUDY
Manuel Gehlen, Anders Eklund, Vartan Kurtcuoglu, Jan Malm, Marianne Schmid Daners
BACKGROUND: Three different types of anti-siphon devices (ASDs) have been developed to counteract siphoning-induced overdrainage in upright posture. However, it is not known how the different ASDs affect CSF dynamics under the complex pressure environment seen in clinic due to postural changes. We investigated which ASDs can avoid overdrainage in upright posture best without leading to CSF accumulation. METHODS: Three shunts each of the types Codman Hakim with SiphonGuard (flow-regulated), Miethke miniNAV with proSA (gravitational), and Medtronic Delta (membrane controlled) were tested...
August 2017: Acta Neurochirurgica
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