Read by QxMD icon Read

Simulation AND Orthop*

Dietmar Dammerer, David Putzer, Alexander Wurm, Michael Liebensteiner, Michael Nogler, Martin Krismer
OBJECTIVE: Knee arthroscopies are very common orthopedic procedures. For a number of reasons, including increased public awareness for medical errors, patient safety, strict regulations governing duty-hours for residents, surgeons' liability, and an increasing emphasis on the efficient use of operating room time, interest in simulator training is on the rise. It was the purpose of this study to analyze learning curves of medical students and orthopedic resident surgeons using a virtual knee arthroscopy simulator...
June 18, 2018: Journal of Surgical Education
James P Moley, Mary S McGrath, Jeffrey F Granger, Paul Stoodley, Devendra H Dusane
Antibiotic-loaded calcium sulfate beads (CS-B) are used to treat biofilm-related periprosthetic joint infections (PJI). A previous study has shown that such beads are effective in reducing lawns biofilms grown on agar plates; however, the ability of CS-B to eradicate biofilms grown on solid orthopaedic material surfaces has not been investigated. We grew biofilms of bioluminescent strains of Pseudomonas aeruginosa Xen41 and a USA300 MRSA Staphylococcus aureus SAP231 on ultra-high molecular weight polyethylene (PE), hydroxyapatite (HA), and 316L stainless steel (SS) coupons for three days under static growth conditions, with daily nutrient exchange...
June 20, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
Kenan Niu, Jasper Homminga, Victor I Sluiter, André Sprengers, Nico Verdonschot
PURPOSE: A fast and accurate intraoperative registration method is important for Computer-Aided Orthopedic Surgery (CAOS). A-mode ultrasound (US) is able to acquire bone surface data in a non-invasive manner. To utilize A-mode US in CAOS, a suitable registration algorithm is necessary with a small number of registration points and the presence of measurement errors. Therefore, we investigated the effects of (1) the number of registration points and (2) the Ultrasound Point Localization Error (UPLE) on the overall registration accuracy...
2018: PloS One
Eric Pierce, Renato Rapada, Penelope Anne Herder, Anthony J LaPorta, Tuan N Hoang, Mathew Pena, Jeff Blankenship, Jeff Kiser, Sarah Ashley Catlin
BACKGROUND: The US Navy initiated design concepts for a Medical Mission Module Support Container (M3SC), a mobile operating room capable of rapid installation aboard maneuverable ships within proximity of active combat units. The M3SC provides an alternative echelon of care in the current trauma system by decreasing the time between point of injury, arrival, and surgical intervention. The mobile ships used as M3SC platforms, however, are more susceptible to oceanic conditions that can induce detrimental physiologic motion sickness in medical personnel and patients aboard the vessels...
2018: Journal of Special Operations Medicine: a Peer Reviewed Journal for SOF Medical Professionals
Nikita Lakomkin, Aristides I Cruz, Peter D Fabricant, Andrew Georgiadis, J Todd R Lawrence
OBJECTIVE: To assess the risk of glove perforation during common maneuvers or events in trauma-related orthopedic surgical procedures. METHODS: Four investigators executed six high-risk maneuvers in a simulated laboratory setting. Alternative techniques were also performed for most maneuvers. Glove integrity was examined by two standard methods of fluid leak testing. The rates of perforation were compared between techniques using Chi-squared and Fisher's exact tests...
May 28, 2018: Journal of Orthopaedic Trauma
Marta Miola, Andrea Cochis, Ajay Kumar, Carla Renata Arciola, Lia Rimondini, Enrica Verné
To promote osteointegration and simultaneously limit bacterial contamination without using antibiotics, we designed innovative composite cements containing copper (Cu)-doped bioactive glass powders. Cu-doped glass powders were produced by a melt and quenching process, followed by an ion-exchange process in a Cu salt aqueous solution. Cu-doped glass was incorporated into commercial polymethyl methacrylate (PMMA)-based cements with different viscosities. The realized composites were characterized in terms of morphology, composition, leaching ability, bioactivity, mechanical, and antibacterial properties...
June 6, 2018: Materials
Roshen Borkar, James Rizkalla, Youngmin Kwon, Paul Salama, Maher Rizkalla
Diabetic foot ulcers are systemic diseases that affect all blood vessels within the human body. From major blood vessels to microvasculature, hardening, thickening, and narrowing of blood vessels ultimately results to diminished blood flow to end organs. The detrimental effects of peripheral vascular disease are well recognized across medicine, particularly with regards to diabetic foot ulcers. Diabetic foot ulcers (DFU) are common across all fields of medicine, including but not limited to: orthopedics, vascular surgery, podiatry, general internal medicine, and infectious disease...
June 2018: Journal of Orthopaedics
Adam S Levin, Ikram U Haq, Dawn M LaPorte
Background: We evaluated a cognitive task analysis-based application, Touch Surgery. Methods: Orthopaedic surgery interns completed a simulated ankle open reduction and internal fixation and a lag screw fixation before starting the boot camp. Surveys were administered before the simulation and after the boot camp. Results: Fourteen of 19 interns completed the study. Ten interns thought the application improved their baseline understanding...
June 2018: Journal of Orthopaedics
P J Zufferey, E Ollier, X Delavenne, S Laporte, P Mismetti, S B Duffull
AIMS: Increased exposure to fondaparinux, as observed in patients with renal impairment, may increase bleeding risk. This study aims to determine the time course of major bleeding after major orthopaedic surgery, identify predictors of bleeding and simulate the effect of a reduced dose of fondaparinux on bleeding for patients with moderate renal impairment (creatinine clearance = 20-50 ml. min-1 ). METHODS: Data including fondaparinux anti-Xa activities from two multicentre prospective cohorts were used...
June 7, 2018: British Journal of Clinical Pharmacology
Daniel S Donovan, Jeremy D Podolnick, Wayne Reizner, O Alton Barron, Louis W Catalano, Steven Z Glickel
BACKGROUND: A cadaveric study was performed to evaluate the accuracy and reliability of radiographic estimation of the volar lip fragment size in proximal interphalangeal joint fracture-dislocations. METHODS: Middle phalangeal base volar lip fractures of varying size and morphology were simulated in 18 digits. Radiographs and digital photographs of the middle phalangeal joint surface were obtained pre- and postinjury. Ten orthopedic surgeons of varying levels of training estimated the fracture size based on radiographs...
June 1, 2018: Hand: Official Journal of the American Association for Hand Surgery
Nathaniel A Bates, Nathan D Schilaty, Christopher V Nagelli, Aaron J Krych, Timothy E Hewett
BACKGROUND: Anterior cruciate ligament (ACL) injuries are catastrophic events that affect athletic careers and lead to long-term degenerative knee changes. As injuries are believed to occur within the first 50 milliseconds after initial contact during a rapid deceleration task, impact simulators that rapidly deliver impulse loads to cadaveric specimens have been developed. However, no impactor has reproducibly and reliably created ACL injures in a distribution that mimics clinical observation...
June 1, 2018: American Journal of Sports Medicine
Serdar Yuksel, M Akif Guleç, Zeki Gultekin, Aysel Caglar, Ozan Beytemur, Ender Alagoz, A Akdogan Eker, Cansu Subaşı, Erdal Karaoz
PURPOSE: This study aimed to assess Achilles tendon repair in rats following splenectomy to simulate patients with musculoskeletal system injury who had splenectomy after spleen injury, a situation often seen in orthopedics and traumatology practice. MATERIALS AND METHODS: The study included 32 male Sprague-Dawley rats (10 months old; average weight, 394.5 ± 28.3 g). The rats were fed with standard rodent food ad libitum at 22°C in a dark environment for 12 h...
June 4, 2018: Connective Tissue Research
Wei Jiang, Cuicui Ji, Zhongmin Jin, Yuntian Dai
Total knee replacement is a common surgical procedure in orthopaedics. Accurate volumetric wear assessment of the polyethylene knee inserts has been an essential subject for improving the longevity. A new CMM-based methodology was presented to determine volumetric material loss based on curve surface fitting without prewear data, CAD model, or original design of drawings. Both computational and experimental simulated volume removal tests were run to validate the methodology by comparing with the gravimetric measurements...
2018: Applied Bionics and Biomechanics
Ondřej Lagner, Tomáš Klouček, Petra Šímová
Viewshed analysis is a GIS tool in standard use for more than two decades to perform numerous scientific and practical tasks. The reliability of the resulting viewshed model depends on the computational algorithm and the quality of the input digital surface model (DSM). Although many studies have dealt with improving viewshed algorithms, only a few studies have focused on the effect of the spatial accuracy of input data. Here, we compare simple binary viewshed models based on DSMs having varying levels of detail with viewshed models created using LiDAR DSM...
2018: PeerJ
Morten Baltzer Houlind, Helle Bach Ølgaard McNulty, Charlotte Treldal, Signe Lindgaard Andersen, Thomas Huneck Haupt, Janne Petersen, Ove Andersen, Lene Juel Kjeldsen
(1) Objective: To assess hospital medication costs and staff time between One-Stop Dispensing (OSD) and the Traditional Medication System (TMS), and to evaluate patient perspectives on OSD. (2) Methods: The study was conducted at Hvidovre Hospital, University of Copenhagen, Denmark in an elective gastric surgery and acute orthopedic surgery department. This study consists of three sub-studies including adult patients able to self-manage medication. In Sub-study 1, staff time used to dispense and administer medication in TMS was assessed...
May 28, 2018: Pharmacy (Basel, Switzerland)
Min Wu, Jianzhong Guan, Yuzhou Xiao, Zhaodong Wang, Xiaotian Chen, Zhi Zhao, Kuankuan Zhang, Jun Zhu
Objective: To evaluate the effectiveness of three-dimensional (3-D) printing assisting minimally invasive for intraarticular calcaneal fractures with percutaneous poking reduction and cannulate screw fixation. Methods: A retrospective analysis was performed of the 19 patients (19 feet) with intraarticular calcaneal fracture who had been treated between March 2015 and May 2016. There were 13 males and 6 females with an average age of 38.2 years (range, 24-73 years)...
November 1, 2017: Chinese Journal of Reparative and Reconstructive Surgery
Stefan Rahm, Karl Wieser, David E Bauer, Felix Wa Waibel, Dominik C Meyer, Christian Gerber, Sandro F Fucentese
BACKGROUND: Most studies demonstrated, that training on a virtual reality based arthroscopy simulator leads to an improvement of technical skills in orthopaedic surgery. However, how long and what kind of training is optimal for young residents is unknown. In this study we tested the efficacy of a standardized, competency based training protocol on a validated virtual reality based knee- and shoulder arthroscopy simulator. METHODS: Twenty residents and five experts in arthroscopy were included...
May 16, 2018: BMC Musculoskeletal Disorders
Steven T DiSegna, Timothy D Kelley, Deborah M DeMarco, Abhay R Patel
It is unclear how the Accreditation Council for Graduate Medical Education (ACGME) resident duty hour restriction has affected attending orthopaedic surgeons in their first year of practice. The purpose of this study was to compare the clinical preparedness of first-year orthopaedic attending surgeons who trained with ACGME duty hour regulations versus those trained without regulations. Senior orthopaedic surgeons with greater than 10 years of experience were surveyed and results indicate that first-year attendings who trained with ACGME duty hour regulations required more supervision reviewing cases preoperatively, required more assistance completing operative cases, had inferior technical skills, had more major operative complications, had poorer physical exam skills, and delivered an inferior quality of care...
2018: Journal of Surgical Orthopaedic Advances
Kapil Sugand, Robert A Wescott, Richard Carrington, Alister Hart, Bernard H Van Duren
Background and purpose - Simulation is an adjunct to surgical education. However, nothing can accurately simulate fluoroscopic procedures in orthopedic trauma. Current options for training with fluoroscopy are either intraoperative, which risks radiation, or use of expensive and unrealistic virtual reality simulators. We introduce FluoroSim, an inexpensive digital fluoroscopy simulator without the need for radiation. Patients and methods - This was a multicenter study with 26 surgeons in which everyone completed 1 attempt at inserting a guide-wire into a femoral dry bone using surgical equipment and FluoroSim...
May 10, 2018: Acta Orthopaedica
Saeed Moeini, Mohammad Reza Mohammadi, Abdolreza Simchi
The interest in biodegradable polymer-matrix nanocomposites with bone regeneration potential has been increasing in recent years. In the present work, a solvothermal process is introduced to prepare hydroxyapatite (HA) nanorod-reinforced polycaprolactone in-situ . A non-aqueous polymer solution containing calcium and phosphorous precursors is prepared and processed in a closed autoclave at different temperatures in the range of 60-150 °C. Hydroxyapatite nanorods with varying aspect ratios are formed depending on the processing temperature...
September 2017: Bioactive Materials
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"