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https://www.readbyqxmd.com/read/28336328/bone-healing-is-achievable-despite-extensive-wound-dehiscence-and-wide-plate-and-screws-exposure-in-children
#1
Elias Melhem, Wael Bayoud, Ismat Ghanem
BACKGROUD: Extensive wound dehiscence and wide plate and screw exposure in the early weeks following orthopaedic surgery in children is usually managed either by extensive debridement, lavage and secondary closure or hardware removal and external fixation. PATIENTS: Three children with LCP plate and screws exposure were managed by simple repetitive debridement and local wound care without any IV antibiotics, nor secondary closure or hardware removal. All three cases occurred in the tibia, one following tibial osteotomy in lateral hemimelia with a long history of previous surgeries, one following wide excision of a tibial Ewing sarcoma with chemo and radiotherapy, and the third following wide excision of a 12cm necrotic tibial segment due to chronic osteomyelitis...
March 20, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28336098/complications-of-volar-locking-plating-of-distal-radius-fractures-in-576-patients-with-3-2-years-follow-up
#2
REVIEW
Rikke Thorninger, Mette Lund Madsen, Daniel Wæver, Lars Carl Borris, Jan Hendrik Duedal Rölfing
BACKGROUND: Volar plating of unstable distal radius fractures (DRF) has become the favoured treatment. The complication rates vary from 3 to 36%. The purpose of the study was to estimate the complication rate of volar plating of DRF and its association with AO/OTA fracture type, surgeon experience and type of volar plate. METHODS: Retrospectively, all patients treated with volar plating of a DRF between February 2009 and June 2013 at Aarhus University Hospital, Denmark were included...
March 10, 2017: Injury
https://www.readbyqxmd.com/read/28326426/use-of-locking-plates-for-fixation-of-the-greater-trochanter-in-patients-with-hip-replacement
#3
Allison K Tetreault, Brian J McGrory
BACKGROUND: Fixation of the greater trochanter with total hip replacement is challenging and associated with short- and long-term complications. Locking plate technology has been used for fixation of other bones and may be applied successfully in trochanteric fixation. The purpose of this retrospective study was to analyze the utility of the use of trochanteric locking plates in total hip arthroplasty (THA) patients. METHODS: From 2004 to 2014, 32 procedures were performed to fix the greater trochanter in patients with trochanteric fracture, osteotomy, or nonunion in the setting of THA...
December 2016: Arthroplasty Today
https://www.readbyqxmd.com/read/28317879/a-novel-method-for-screening-adenosine-receptor-specific-agonists-for-use-in-adenosine-drug-development
#4
Karlie R Jones, Uimook Choi, Ji-Liang Gao, Robert D Thompson, Larry E Rodman, Harry L Malech, Elizabeth M Kang
Agonists that target the A1, A2A, A2B and A3 adenosine receptors have potential to be potent treatment options for a number of diseases, including autoimmune diseases, cardiovascular disease and cancer. Because each of these adenosine receptors plays a distinct role throughout the body, obtaining highly specific receptor agonists is essential. Of these receptors, the adenosine A2AR and A2BR share many sequence and structural similarities but highly differ in their responses to inflammatory stimuli. Our laboratory, using a combination of specially developed cell lines and calcium release analysis hardware, has created a new and faster method for determining specificity of synthetic adenosine agonist compounds for the A2A and A2B receptors in human cells...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28303744/tibial-fixation-in-anterior-cruciate-ligament-reconstruction
#5
Wei Wen Timothy Teo, Ching Sing Nicholas Yeoh, Teck Huat Andy Wee
OBJECTIVE: To determine whether supplementary tibial graft fixation with a staple is routinely necessary for anterior cruciate ligament (ACL) reconstructions. METHODS: We retrospectively reviewed a series of consecutive patients who underwent ACL reconstruction at our institution from April 2012 to July 2013. Patients who fulfilled the inclusion and exclusion criteria were divided into two groups, of which one with tibial fixation of the graft with a biointerference screw alone (biointerference screw group) and the other with tibial fixation of the graft with a biointerference screw and supplementary extra tunnel staple fixation (biointerference screw and staple group)...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28303286/-fractures-of-the-olecranon
#6
P Gierer, A Wichelhaus, R Rotter
OBJECTIVE: Fractures of the olecranon are the most common fractures of the elbow in adults. Due to the dislocating force of the triceps muscle, internal fixation is the treatment of choice. INDICATIONS: All fractures of the olecranon without contraindications. CONTRAINDICATIONS: Infection and severe soft tissue damage. SURGICAL TECHNIQUE: Dorsal approach to the olecranon with the patient in a prone position. Open reduction and internal fixation with tension band wiring or plate fixation according to fracture pattern...
March 16, 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28296305/on-flattening-filter-free-portal-dosimetry
#7
Eduardo Pardo, Juan Castro Novais, María Yolanda Molina López, Sheila Ruiz Maqueda
Varian introduced (in 2010) the option of removing the flattening filter (FF) in their C-Arm linacs for intensity-modulated treatments. This mode, called flattening filter-free (FFF), offers the advantage of a greater dose rate. Varian's "Portal Dosimetry" is an electronic portal imager device (EPID)-based tool for IMRT verification. This tool lacks the capability of verifying flattening filter-free (FFF) modes due to saturation and lack of an image prediction algorithm. (Note: the latest versions of this software and EPID correct these issues...
July 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28295375/x-ray-scatter-correction-for-dedicated-cone-beam-breast-ct-using-a-forward-projection-model
#8
Linxi Shi, Srinivasan Vedantham, Andrew Karellas, Lei Zhu
PURPOSE: The quality of dedicated cone-beam breast CT (CBBCT) imaging is fundamentally limited by x-ray scatter contamination due to the large irradiation volume. In this paper, we propose a scatter correction method for CBBCT using a novel forward projection model with high correction efficacy and reliability. METHOD: We first coarsely segment the uncorrected, first-pass, reconstructed CBBCT images into binary-object maps and assign the segmented fibroglandular and adipose tissue with the correct attenuation coefficients based on the mean x-ray energy...
March 15, 2017: Medical Physics
https://www.readbyqxmd.com/read/28295122/epiphysiodesis-screw-bending
#9
Brett M Normandin, David J Tennent, Todd H Baldini, Alesia M Blanchard, Jason T Rhodes
Percutaneous epiphysiodesis using transphyseal screws is a common method for treatment of limb length discrepancy and angular deformity. The authors report 3 cases of a previously unreported complication following treatment with percutaneous epiphysiodesis using transphyseal screws: bending of the transphyseal screw. In each case, this rare complication was associated with difficult removal of the screw. This retrospective case report accessed the medical records of 3 children, 2 boys and 1 girl, 9 to 14 years old...
March 14, 2017: Orthopedics
https://www.readbyqxmd.com/read/28293156/indications-of-implant-removal-a-study-of-83-cases
#10
Muhammad Haseeb, Muhammad Farooq Butt, Tariq Altaf, Khalid Muzaffar, Anil Gupta, Aleena Jallu
INTRODUCTION: Fracture fixation has become advanced with the advent of new and custom metal implants for each type of bone/fracture. After union though, the implant ceases to be important and may be removed. Routine removal is advocated by some and opposed by others. Nevertheless, some patients require removal of the hardware because of various implant-related problems. Our study was aimed at identifying the most common causes for implant removal. OBJECTIVE: To investigate the common indications of orthopedic implant removal surgeries...
January 2017: International Journal of Health Sciences
https://www.readbyqxmd.com/read/28292753/reimplantation-and-repeat-infection-after-cardiac-implantable-electronic-device-infections-experience-from-the-medic-multicenter-electrophysiologic-device-infection-cohort-database
#11
Thomas A Boyle, Daniel Z Uslan, Jordan M Prutkin, Arnold J Greenspon, Larry M Baddour, Stephan B Danik, Jose M Tolosana, Katherine Le, Jose M Miro, James Peacock, Muhammad R Sohail, Holenarasipur R Vikram, Roger G Carrillo
BACKGROUND: Infection is a serious complication of cardiovascular-implantable electronic device implantation and necessitates removal of all hardware for optimal treatment. Strategies for reimplanting hardware after infection vary widely and have not previously been analyzed using a large, multicenter study. METHODS AND RESULTS: The MEDIC (Multicenter Electrophysiologic Device Infection Cohort) prospectively enrolled subjects with cardiovascular-implantable electronic device infections at multiple institutions in the United States and abroad between 2009 and 2012...
March 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28292568/management-of-septic-arthritis-after-arthroscopic-anterior-cruciate-ligament-reconstruction-using-a-standard-surgical-protocol
#12
Michael E Hantes, Vasilios A Raoulis, Nikolaos Doxariotis, Athanasios Drakos, Theofilos Karachalios, Konstantinos N Malizos
BACKGROUND: To report the incidence of septic arthritis after anterior cruciate ligament (ACL) reconstruction and management of this complication using a specific treatment protocol. METHODS: All primary ACL reconstructions performed in our institution between January 2002 and January 2014 were included in this study. Time to presentation, clinical symptoms, and culture results of all infected patients were analyzed. According to our protocol, an arthroscopic debridement and irrigation of the knee joint was performed immediately after a diagnosis of infection was made...
March 12, 2017: Knee
https://www.readbyqxmd.com/read/28289904/shoulder-arthroscopy-combined-to-hardware-removal-in-proximal-humeral-fractures-a-series-of-58-cases-with-a-mean-follow-up-of-2%C3%A2-years
#13
Ch Maroun, D Aliani, A Hass, J D Werthel, Anne Vidil, Ph Valenti
BACKGROUND: Proximal humerus fractures are common injuries. Locking plates and anterograde medullary nails are the two most common fixation devices used when open reduction and internal fixation (ORIF) is indicated. Complications related to fracture and to hardware are numerous, especially shoulder stiffness. The goal of this study is to report the clinical outcomes of gleno-humeral arthroscopic arthrolysis combined with hardware removal. METHODS: A total of 58 patients (25 men, 33 women) with a mean age of 58 years (24-79) were reviewed retrospectively...
March 13, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28277416/incidence-and-risk-factors-of-hardware-related-complications-after-proximal-femoral-osteotomy-in-children-and-adolescents
#14
Myung Ki Chung, Soon-Sun Kwon, Byung Chae Cho, Gye Wang Lee, Jaeyoung Kim, Seung Jun Moon, Jae Woo Lee, Chin Youb Chung, Ki Hyuk Sung, Kyoung Min Lee, Moon Seok Park
Proximal femoral osteotomy has been used in cerebral palsy, Perthes disease, hip dysplasia, idiopathic femoral anteversion, and various hip diseases in children and adolescents. Conventionally, a blade plate (BP) has been used. However, the pediatric locking compression plate (LCP) has recently been applied widely. We compared the hardware-related complications of the BP and the LCP as well as the factors influencing these complications in patients who have undergone a proximal femoral osteotomy in children and adolescents...
March 8, 2017: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/28272928/prospective-clinical-and-radiographic-outcomes-after-concomitant-anterior-cruciate-ligament-reconstruction-and-meniscal-allograft-transplantation-at-a-mean-5-year-follow-up
#15
Bryan M Saltzman, Maximilian A Meyer, Alexander E Weber, Sarah G Poland, Adam B Yanke, Brian J Cole
BACKGROUND: Concomitant anterior cruciate ligament reconstruction and meniscal allograft transplantation (ACLR/MAT) has demonstrated short-term success in small, retrospective cohort studies. Patient- and disease-specific predictors of success after ACLR/MAT are largely unknown. PURPOSE: To (1) prospectively evaluate the subjective and objective clinical and radiographic outcomes after ACLR/MAT and (2) conduct a subgroup analysis to identify patient- or disease-related factors that correlate with failure...
March 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28268367/bayesian-deconvolution-of-scanning-electron-microscopy-images-using-point-spread-function-estimation-and-non-local-regularization
#16
Joris Roels, Jan Aelterman, Jonas De Vylder, Hiep Luong, Yvan Saeys, Wilfried Philips
Microscopy is one of the most essential imaging techniques in life sciences. High-quality images are required in order to solve (potentially life-saving) biomedical research problems. Many microscopy techniques do not achieve sufficient resolution for these purposes, being limited by physical diffraction and hardware deficiencies. Electron microscopy addresses optical diffraction by measuring emitted or transmitted electrons instead of photons, yielding nanometer resolution. Despite pushing back the diffraction limit, blur should still be taken into account because of practical hardware imperfections and remaining electron diffraction...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28261827/fast-shading-correction-for-cone-beam-ct-in-radiation-therapy-via-sparse-sampling-on-planning-ct
#17
Linxi Shi, Tiffany Tsui, Jikun Wei, Lei Zhu
PURPOSE: The image quality of cone beam computed tomography (CBCT) is limited by severe shading artifacts, hindering its quantitative applications in radiation therapy. In this work, we propose an image-domain shading correction method using planning CT (pCT) as prior information which is highly adaptive to clinical environment. METHOD: We propose to perform shading correction via sparse sampling on pCT. The method starts with a coarse mapping between the first-pass CBCT images obtained from the Varian TrueBeam system and the pCT...
March 6, 2017: Medical Physics
https://www.readbyqxmd.com/read/28260129/validity-of-computed-tomography-in-predicting-scaphoid-screw-prominence-a-cadaveric-study
#18
Clare E Griffis, Cara Olsen, Leon Nesti, C Frank Gould, Michael Frew, Patricia McKay
BACKGROUND: Studies of hardware protrusion into joint spaces following fracture fixation have been performed to address whether or not there is discrepancy between the actual and radiographic appearance of screw prominence. The purpose of our study was to prove that, with respect to the scaphoid, prominence as visualized on CT scan is real and not a result of metal artifact. METHODS: Forty-two cadaveric wrists were separated into four allotted groups with 21 control specimens and 21 study specimens...
March 4, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28253480/open-reduction-with-k-wire-stabilization-of-fracture-dislocations-of-the-mandibular-condyle-a-retrospective-review
#19
Kayvon Haghighi, Manolis G Manolakakis, Connor Balog
PURPOSE: The aim of this study was to determine the feasibility of direct transcortical stabilization of fracture dislocations of the mandibular condyle (FDMCs) using narrow-diameter non-threaded Kirschner wire (K-wire). MATERIALS AND METHODS: This retrospective review reports on the treatment outcomes for 12 patients (15 fractures) with FDMCs treated with open reduction using transcortical 0.027-inch K-wire stabilization. Postoperative parameters of relevance included infection, facial nerve function, hardware removal, mandibular range of motion, and radiographic determination of fracture union...
February 6, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28245975/evaluation-of-fixation-techniques-for-metatarsocuneiform-arthrodesis
#20
Eric A Barp, John G Erickson, Hayden L Smith, Katrina Almeida, Kelsey Millonig
First metatarsocuneiform joint arthrodesis has been used in foot and ankle surgery for the treatment of hallux abductovalgus deformity, among other pedal pathologic entities. The goal of the present retrospective study was to compare the fusion rates and complications of an intraplate compression screw fixation, crossing solid core screw fixation, and a single interfragmentary screw with a simple locking plate. All procedures were performed by a single surgeon, and all patients received an identical postoperative protocol...
February 25, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
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