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https://www.readbyqxmd.com/read/28652713/effect-of-barium-coated-halloysite-nanotube-addition-on-the-cytocompatibility-mechanical-and-contrast-properties-of-poly-methyl-methacrylate-cement
#1
Uday Jammalamadaka, Karthik Tappa, Jeffery A Weisman, James Connor Nicholson, David K Mills
Halloysite nanotubes (HNTs) were investigated as a platform for tunable nanoparticle composition and enhanced opacity in poly(methyl methacrylate) (PMMA) bone cement. Halloysite has been widely used to increase the mechanical properties of various polymer matrices, in stark contrast to other fillers such as barium sulfate that provide opacity but also decrease mechanical strength. The present work describes a dry deposition method for successively fabricating barium sulfate nanoparticles onto the exterior surface of HNTs...
2017: Nanotechnology, Science and Applications
https://www.readbyqxmd.com/read/28651162/antibacterial-activity-corrosion-resistance-and-wear-behavior-of-spark-plasma-sintered-ta-5cu-alloy-for-biomedical-applications
#2
Jing Cui, Liang Zhao, Weiwei Zhu, Bi Wang, Cancan Zhao, Liming Fang, Fuzeng Ren
Tantalum has been widely used in orthopedic and dental implants. However, the major barrier to the extended use of such medical devices is the possibility of bacterial adhesion to the implant surface which will cause implant-associated infections. To solve this problem, bulk Ta-5Cu alloy has been fabricated by a combination of mechanical alloying and spark plasma sintering. The effect of the addition of Cu on the hardness, antibacterial activity, cytocompatibility, corrosion resistance and wear performance was systematically investigated...
June 21, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28647139/impact-of-raised-serum-cobalt-levels-from-recalled-articular-surface-replacement-hip-prostheses-on-the-visual-pathway
#3
Timothy Unsworth-Smith, Jane C Khan, Riaz J K Khan, Enid Chelva, Caroline Ann Lim, Samantha Haebich, Michelle L Trevenen
BACKGROUND: The articular surface replacement (ASR) was recalled in 2010 because of higher than expected revision rates. Patients reported symptoms of neurologic dysfunction including poor vision. This cohort study, using objective measurements, aimed to establish whether a higher incidence of visual function defects exists in ASR patients. METHODS: Thirty-three ASR patients and 33 non-ASR controls (control 1) were recruited. Data were compared with normative population data from the visual electrophysiology database (control 2)...
May 11, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28646807/manual-therapy-with-cryotherapy-versus-manual-therapy-with-kinesio-taping-for-males-with-lumbar-discopathy-a-pilot-randomized-trial
#4
Pawel Lizis, Wojciech Kobza
Context • Numerous modalities of therapeutic interventions exist for lumbar discopathy. Manual therapy is one option, although its effectiveness remains controversial. The addition of cryotherapy to manual therapy may enhance the health benefits in patients with lumbar discopathy.  Objective • The study intended to evaluate the efficacy of manual therapy combined with cryotherapy vs manual therapy combined with Kinesio taping for males with lumbar discopathy. Design • The research team designed a pilot randomized trial with concealed allocation, assessor blinding, and intention-to-treat analysis...
June 23, 2017: Alternative Therapies in Health and Medicine
https://www.readbyqxmd.com/read/28644122/fluoroscopic-exposure-with-use-of-mini-c-arm-during-routine-hand-surgery-a-prospective-comparison-of-hand-versus-eye-radiation-dosage
#5
Mark L Wang, C Edward Hoffler, Asif M Ilyas, Pedro K Beredjiklian, Charles F Leinberry
Radiation exposure with use of intraoperative fluoroscopy is a potential orthopedic occupational risk factor. The purpose of this study was to perform a prospective comparison of hand versus eye radiation exposure associated with mini-C-arm utilization and to test the hypothesis that routine mini-C-arm does not yield hand or eye dosages exceeding current recommended levels. Over a 12-month period, hand and eye radiation exposure was prospectively measured in a single board-certified hand surgeon using mini-C-arm fluoroscopy...
2017: Journal of Surgical Orthopaedic Advances
https://www.readbyqxmd.com/read/28643927/co2-low-level-laser-therapy-has-an-early-but-not-delayed-pain-effect-during-experimental-tooth-movement
#6
T Deguchi, D G Kim, H Kamioka
OBJECTIVES: To test the hypothesis that the use of low-level laser therapy (LLLT) reduces elevated pain by controlling the release of neurochemicals during orthodontic tooth movement. SETTING AND SAMPLE POPULATION: Department of Orthodontics and Dentofacial Orthopedics, Okayama University. Sixty-five Sprague Dawley rats were subjected to tooth movement and LLLT. MATERIALS AND METHODS: Adult Sprague Dawley rats were used in this study. Groups included day 0 controls, irradiation only controls and with or without irradiation sacrificed at 1, 3, 5, 7 and 14 days after tooth movement (n=5 each, total n=65)...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28642661/customized-guide-for-femoral-component-positioning-in-hip-resurfacing-arthroplasty
#7
Chaturong Pornrattanamaneewong, Rapeepat Narkbunnam, Keerati Chareancholvanich
OBJECTIVE: To prove the accuracy of a customized guide developed according to our method. METHODS: This customized guide was developed from a three-dimensional model of proximal femur reconstructed using computed tomography data. Based on the new technique, the position of the guide pin insertion was selected and adjusted using the reference of the anatomical femoral neck axis. The customized guide consists of a hemispheric covering designed to fit the posterior part of the femoral neck...
March 2017: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/28641982/temporal-artery-and-axillary-thermometry-comparison-with-rectal-thermometry-in-children-presenting-to-the-emergency-department
#8
Adam J Forrest, Michael L Juliano, Sean P Conley, Patrick D Cronyn, Andrea McGlynn, Jonathan D Auten
BACKGROUND: Accurate temperature readings, often obtained rectally, are an important part of the initial evaluation of pediatric patients in the Emergency Department. Temporal artery thermometry (TAT) is one way to noninvasively measure temperature. We sought to compare the accuracy of axillary and temporal artery temperatures compared to rectal. METHODS: This prospective study included children age 0-36months presenting to the Emergency Department of a large military treatment facility...
June 11, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28640085/familial-lumbar-scheuermann-disease-with-idiopathic-scoliosis-in-china-first-case-report
#9
Yuliang Dai, Yawei Li, Pengzhi Li, Lei Li, Zhiming Tu, Bing Wang
RATIONALE: Given that Scheuermann disease rarely occurs in the lumbar region and that the co-occurrence of Scheuermann disease and idiopathic scoliosis (IS) has not been reported-the etiology of Scheuermann disease and IS is not clear. In this case report, we present familaiar lumbar Scheuermann disease with IS, in a Chinese proband, who was successfully treated with surgery. PATIENT CONCERNS: A 16-year-old boy presented at the Second XiangYa Hospital of Central South University with a chief complaint of kyphotic deformity in the lower back for 4 years and obvious lower back pain...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28639437/ultrasound-assisted-green-economic-synthesis-of-hydroxyapatite-nanoparticles-using-eggshell-bio-waste-and-study-of-mechanical-and-biological-properties-for-orthopaedic-applications
#10
Vijay H Ingole, Kamal Hany Hussein, Anil A Kashale, Kalyani Ghule, Tomaž Vuherer, Vanja Kokol, Jia-Yaw Chang, Yong-Chien Ling, Aruna Vinchurkar, Hom N Dhakal, Anil V Ghule
Nanostructured hydroxyapatite (HAp) is most favorable candidate biomaterial for bone tissue engineering because of its bioactive and osteoconductive properties. Herein, we report for the first time ultrasound assisted facile and economic approach for the synthesis of nanocrystalline hydroxyapatite (Ca10 (PO4 )6 (OH)2 ) using recycled eggshell bio-waste referred as EHAp. The process involves the reaction of eggshell bio-waste as a source of calcium and ammonium dihydrogen orthophosphate as a phosphate source...
June 22, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28635177/engineering-human-bone-grafts-with-new-macroporous-calcium-phosphate-cement-scaffolds
#11
Martina Sladkova, Michael Palmer, Caroline Öhman, Jiayi Cheng, Shoug Al-Ansari, Munerah Saad, Håkan Engqvist, Giuseppe Maria de Peppo
Bone engineering opens the possibility to grow large amounts of tissue products by combining patient-specific cells with compliant biomaterials. Decellularized tissue matrices represent suitable biomaterials but availability, long processing time, excessive cost, and concerns on pathogen transmission have led to the development of biomimetic synthetic alternatives. We recently fabricated calcium phosphate cement (CPC) scaffolds with variable macroporosity using a facile synthesis method with minimal manufacturing steps, and demonstrated long-term biocompatibility in vitro...
June 21, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28632577/outcome-of-pediatric-forearm-fracture-reductions-performed-by-pediatric-emergency-medicine-providers-compared-with-reductions-performed-by-orthopedic-surgeons-a-retrospective-cohort-study
#12
Donna Milner, Ernest Krause, Karen Hamre, Andrew Flood
OBJECTIVE: The aim of this study was to describe the outcome differences between board-certified orthopedists and pediatric emergency medicine (PEM) physicians conducting forearm fracture reductions. METHODS: We performed an analysis of patients between 1 and 14 years of age who presented to the emergency department (ED) with a forearm fracture requiring reduction. Data collected included reducing provider (PEM or orthopedist) and prereduction, postreduction, and follow-up fracture angles and displacements of both radius and ulna...
June 20, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28627915/long-term-classroom-functioning-and-its-association-with-neuropsychological-and-academic-performance-following-traumatic-brain-injury-during-early-childhood
#13
Amery Treble-Barna, Hanna Schultz, Nori Minich, H Gerry Taylor, Keith Owen Yeates, Terry Stancin, Shari L Wade
OBJECTIVE: The present study utilized ecobehavioral assessment to examine classroom functioning several years following early childhood traumatic brain injury (TBI) or orthopedic injury (OI) and its association with injury factors, neuropsychological abilities, and academic performance. METHOD: Participants included 39 children with moderate to severe TBI and 51 children with OI sustained between ages 3 and 7 years. At 7.2 (± 1.3) years post injury, ecobehavioral assessment was used to examine classroom functioning...
July 2017: Neuropsychology
https://www.readbyqxmd.com/read/28621746/biocompatibility-analyses-of-al%C3%A2-o%C3%A2-treated-titanium-plates-tested-with-osteocyte-and-fibroblast-cell-lines
#14
Alberto Smargiassi, Jessika Bertacchini, Marta Checchi, Francesco Cavani, Marzia Ferretti, Carla Palumbo
Osseointegration of a titanium implant is still an issue in dental/orthopedic implants durable over time. The good integration of these implants is mainly due to their surface and topography. We obtained an innovative titanium surface by shooting different-in-size particles of Al₂O₃ against the titanium scaffolds which seems to be ideal for bone integration. To corroborate that, we used two different cell lines: MLO-Y4 (murine osteocytes) and 293 (human fibroblasts) and tested the titanium scaffolds untreated and treated (i...
June 16, 2017: Biomedicines
https://www.readbyqxmd.com/read/28617519/pain-and-opioid-use-after-total-shoulder-arthroplasty-with-injectable-liposomal-bupivacaine-versus-interscalene-block
#15
Marc R Angerame, John A Ruder, Susan M Odum, Nady Hamid
Postoperative pain control is a significant concern after total shoulder arthroplasty. Injectable periarticular liposomal bupivacaine, which has been found to decrease opioid use after orthopedic procedures, has been proposed as a viable alternative to regional anesthesia. This study compared the efficacy of liposomal bupivacaine vs interscalene block among patients undergoing total shoulder arthroplasty. A retrospective review was conducted of 79 patients who underwent anatomic total shoulder arthroplasty performed by a single surgeon between January 2013 and April 2015...
June 15, 2017: Orthopedics
https://www.readbyqxmd.com/read/28615514/prognostic-value-of-the-c-reactive-protein-prognostic-nutritional-index-ratio-after-hip-fracture-surgery-in-the-elderly-population
#16
Hanru Ren, Lianghao Wu, Wankun Hu, Xiuzhang Ye, Baoqing Yu
BACKGROUND: More and more older patients receive the surgery after hip fracture. However, the mortality rate is high. Prognostic nutritional index (PNI) is associated with prognosis in hip fracture patients. In the current study, we proposed a novel prognostic score, named c-reactive protein/PNI ratio (CRP/PNI ratio), for predicting the prognosis for geriatric orthopedic population. METHODS: This is a prospective study. Eighty cases of hip fracture surgery in the elderly population were studied to reveal the relationship between the CRP/PNI ratio and the clinicopathological characteristics of the elderly patients...
May 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28615032/evaluation-of-computed-tomography-post-processing-images-in-postoperative-assessment-of-lisfranc-injuries-compared-with-plain-radiographs
#17
Haobo Li, Yanxi Chen, Minfei Qiang, Kun Zhang, Yuchen Jiang, Yijie Zhang, Xiaoyang Jia
BACKGROUND: The objective of this study is to evaluate the value of computed tomography (CT) post-processing images in postoperative assessment of Lisfranc injuries compared with plain radiographs. METHODS: A total of 79 cases with closed Lisfranc injuries that were treated with conventional open reduction and internal fixation from January 2010 to June 2016 were analyzed. Postoperative assessment was performed by two independent orthopedic surgeons with both plain radiographs and CT post-processing images...
June 14, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28614352/a-novel-iterative-mixed-model-to-remap-three-complex-orthopedic-traits-in-dogs
#18
Meng Huang, Jessica J Hayward, Elizabeth Corey, Susan J Garrison, Gabriela R Wagner, Ursula Krotscheck, Kei Hayashi, Peter A Schweitzer, George Lust, Adam R Boyko, Rory J Todhunter
Hip dysplasia (HD), elbow dysplasia (ED), and rupture of the cranial (anterior) cruciate ligament (RCCL) are the most common complex orthopedic traits of dogs and all result in debilitating osteoarthritis. We reanalyzed previously reported data: the Norberg angle (a quantitative measure of HD) in 921 dogs, ED in 113 cases and 633 controls, and RCCL in 271 cases and 399 controls and their genotypes at ~185,000 single nucleotide polymorphisms. A novel fixed and random model with a circulating probability unification (FarmCPU) function, with marker-based principal components and a kinship matrix to correct for population stratification, was used...
2017: PloS One
https://www.readbyqxmd.com/read/28611406/targeted-next-generation-sequencing-of-the-16s-23s-rrna-region-for-culture-independent-bacterial-identification-increased-discrimination-of-closely-related-species
#19
Artur J Sabat, Evert van Zanten, Viktoria Akkerboom, Guido Wisselink, Kees van Slochteren, Richard F de Boer, Ron Hendrix, Alexander W Friedrich, John W A Rossen, Anna M D Mirjam Kooistra-Smid
The aim of this study was to develop an easy-to-use culture-free diagnostic method based on next generation sequencing (NGS) of PCR amplification products encompassing whole 16S-23S rRNA region to improve the resolution of bacterial species identification. To determine the resolution of the new method 67 isolates were subjected to four identification methods: Sanger sequencing of the 16S rRNA gene; NGS of the 16S-23S rRNA region using MiSeq (Illumina) sequencer; Microflex MS (Bruker) and VITEK MS (bioMérieux)...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28608839/microgroove-and-collagen-poly-%C3%AE%C2%B5-caprolactone-nanofiber-mesh-coating-improves-the-mechanical-stability-and-osseointegration-of-titanium-implants
#20
Morshed Khandaker, Shahram Riahinezhad, Wendy R Williams, Roman Wolf
The effect of depositing a collagen (CG)-poly-ε-caprolactone (PCL) nanofiber mesh (NFM) at the microgrooves of titanium (Ti) on the mechanical stability and osseointegration of the implant with bone was investigated using a rabbit model. Three groups of Ti samples were produced: control Ti samples where there were no microgrooves or CG-PCL NFM, groove Ti samples where microgrooves were machined on the circumference of Ti, and groove-NFM Ti samples where CG-PCL NFM was deposited on the machined microgrooves...
June 13, 2017: Nanomaterials
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