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https://www.readbyqxmd.com/read/28650945/treatment-approach-for-infection-of-healed-fractures-after-internal-fixation
#1
Joshua M Lawrenz, Salvatore J Frangiamore, Ajinkya A Rane, W Alex Cantrell, Heather A Vallier
OBJECTIVE: To review the efficacy of a treatment approach for patients with infection and colonized implants after open reduction and internal fixation of fractures. DESIGN: Retrospective case series. SETTING: Level one trauma center. PATIENTS: Twenty patients were treated for wound infection with colonized implants after open reduction and internal fixation. INTERVENTION: Surgical debridement, removal of implants and a short post-operative oral antibiotic course...
June 15, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28644936/the-deltoid-lift-a-comparison-study-of-exposure-area-in-proximal-humeral-approaches
#2
Michael Ting, Nicholas Kusnezov, John Dunn, Alok K Dwivedi, Miguel A Pirela-Cruz
BACKGROUND: Adequate exposure of the proximal humerus is necessary to address atypical or complex proximal humerus fractures and orthopedic tumors. Surgical management may be difficult through existing approaches due to their limited nature and the delicate neurovascular anatomy of the shoulder. The deltoid lift, a previously described extensile approach, can be incorporated into the surgeon's armamentarium as an alternative exposure to the proximal humerus. The objective of this study was to quantify and compare the humeral exposure achieved through the deltoid lift with the standard direct lateral deltoid-splitting, anterolateral acromial, and deltopectoral approaches in terms of surface area and exposure of key anatomic landmarks...
July 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28642650/epidemiological-study-on-lisfranc-injuries
#3
Marcel Faraco Sobrado, Guilherme Honda Saito, Marcos Hideyo Sakaki, Pedro Augusto Pontin, Alexandre Leme Godoy Dos Santos, Túlio Diniz Fernandes
OBJECTIVE: To analyze the characteristics of patients with Lisfranc injuries and their associated fractures . METHODS: This is a retrospective analysis on 42 patients with Lisfranc injuries hospitalized at Instituto de Ortopedia e Traumatologia do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, between 2006 and 2010. Parameters on patient profile, risk factors, fracture characteristics, data on treatment and acute complications were analyzed ...
January 2017: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/28641745/long-term-stability-of-an-injection-molded-zirconia-bone-level-implant-a-testing-protocol-considering-aging-kinetics-and-dynamic-fatigue
#4
Benedikt C Spies, Madeleine E Maass, Erik Adolfsson, Valter Sergo, Tobias Kiemle, Christoph Berthold, Elisa Gurian, Stefano Fornasaro, Kirstin Vach, Ralf-Joachim Kohal
OBJECTIVE: Separately addressing the fatigue resistance (ISO 14801, evaluation of final product) and aging behavior (ISO 13356, standardized sample) of oral implants made from yttria-stabilized zirconia proved to be insufficient in verifying their long-term stability, since (1) implant processing is known to significantly influence transformation kinetics and (2) aging, up from a certain level, is liable to decrease fatigue resistance. Therefore, the aim of this investigation was to apply a new testing protocol considering environmental conditions adequately inducing aging during dynamic fatigue...
June 19, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28638981/use-of-systemic-glucocorticoids-and-the-risk-of-major-osteoporotic-fractures-in-patients-with-sarcoidosis
#5
O A Oshagbemi, J H M Driessen, A Pieffers, E F M Wouters, P Geusens, P Vestergaard, J van den Bergh, F M E Franssen, F de Vries
This study revealed the risk of major osteoporotic fracture in patients with sarcoidosis exposed to glucocorticoids. Current use of glucocorticoids was associated with a risk of fracture, with no difference between patients with and without sarcoidosis. Sarcoidosis per se was not associated with an increased fracture risk. INTRODUCTION: Sarcoidosis is a multi-organ, chronic inflammatory, granulomatous disorder that most frequently affects the lungs, lymph nodes, skin, eyes, and liver, but may occur in any organ, including the bones...
June 21, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28638548/dentin-bonding-agent-with-improved-bond-strength-to-dentin-through-incorporation-of-sepiolite-nanoparticles
#6
Farnoosh Fallahzadeh, Shadab Safarzadeh-Khosroshahi, Mohammad Atai
BACKGROUND: The study aims to investigate the effect of incorporation of sepiolite nanoparticles on the microtensile bond strength of an experimental dentin bonding to the human dentin. MATERIAL AND METHODS: The sepiolite nanoparticles were incorporated into an experimental methacrylate-based dentin bonding system in concentrations of 0.0, 0.2, 1.0, 2.0, and 5.0 weight percents. The specimens were then ultrasonicated to finely disperse the nanoparticles in the adhesive matrix...
June 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28633772/omnidirectional-internal-fixation-by-double-approaches-for-treating-r%C3%A3-edi-allg%C3%A3-wer-type-iii-pilon-fractures
#7
Chong-Hua Dai, Jun Sun, Kun-Quan Chen, Hui-Bo Zhang
In the present study, we explored the effectiveness and complications of omnidirectional internal fixation using a double approach for treating Rüedi-Allgöwer type III pilon fractures. A retrospective analysis was performed of 19 cases of Rüedi-Allgöwer type III unilateral closed pilon fracture. With preoperative preparation and correct surgical timing, the reduction was performed using anteromedial and posterolateral approaches, and the fracture fragments were fixed by omnidirectional internal fixation...
July 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28623825/application-of-static-fatigue-testing-to-the-behavior-of-absorbable-sutures
#8
J L Prati, D H Kim, M J Matthewson
Absorbable sutures, since their conception, have become the dominant method for surgical wound closure and are constantly being improved. However, despite their years of service, not all aspects of their performance are fully understood. In particular, suture absorption is usually characterized by immersing the suture in a model in vitro environment under zero stress followed by measurement of the residual tensile strength as a function of immersion time. When in use, absorbable sutures are exposed to mechanical stress, which may affect the absorption rate; however, this phenomenon has not been adequately studied...
June 10, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28619411/where-we-fall-down-tensions-in-teaching-social-medicine-and-global-health
#9
Amy Finnegan, Michelle Morse, Marisa Nadas, Michael Westerhaus
BACKGROUND: As global health interest has risen, so too has the relevance of education on the social determinants of health and health equity. Social medicine offers a particularly salient framework for educating on the social determinants of health, health disparities, and health equity. SocMed and EqualHealth, 2 unique but related organizations, offer annual global health courses in Uganda, Haiti, and the United States, which train students to understand and respond to the social determinants of health through praxis, self-reflection and self-awareness, and building collaborative partnerships across difference...
March 2017: Annals of Global Health
https://www.readbyqxmd.com/read/28616811/black-cracks-staining-of-fracture-lines
#10
Sarah Scheirs, Assumpció Malgosa, Ignasi Galtés
During the investigation of fresh bone fractures, it might be difficult to visualize all the fracture lines that could contribute to the interpretation of the biomechanics behind a fracture. To optimize the examination of the fracture, the bones should first be defleshed to expose the osseous surface. To reveal small fracture lines more clearly, we developed two easy, fast, cheap and non-destructive methods to enhance fracture lines and bone defects by coloring the fracture lines with ink. One method consists of cooking the bone in ink, and the second method uses capillary action for ink penetration...
June 15, 2017: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/28590997/is-radiography-necessary-for-pediatric-emergency-department-clinicians-to-safely-manage-ankle-injuries
#11
Rohan Angus Ramasubbu
OBJECTIVES: Ankle radiography in the pediatric emergency department exposes a radiosensitive population to harmful ionizing radiation and is costly to health care systems. This study aimed to determine if ankle injuries in children could be managed safely and effectively without radiography. METHODS: This prospective study enrolled 94 patients with ankle injuries between July 14, 2015, and December 16, 2015. Participating clinicians filled out a tick-box questionnaire describing their predicted diagnosis and management...
June 6, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28588328/internal-fixation-of-fractured-ribs-in-neonatal-foals-with-nylon-cable-tie-using-a-modified-technique
#12
T Boullhesen Williams, Jarred M Williams, Dwayne H Rodgerson
Nylon cable tie has been shown to be an effective and economical method for fixing fractured ribs in the neonatal foal. This article describes a modification of the previously described technique. Under general anesthesia, the fractured ribs were exposed and a hole was drilled in the dorsal and ventral fragments. The fracture was not reduced, leaving the fragments overriding each other. The nylon cable tie was passed through the hole in the dorsal fragment from the external surface of the rib. The free end of the cable tie was then passed through the hole in the ventral fragment from the external surface of the rib and the tie was tightened...
June 2017: Canadian Veterinary Journal. la Revue Vétérinaire Canadienne
https://www.readbyqxmd.com/read/28586601/outcome-of-two-column-acetabular-fractures-treated-operatively-through-single-posterior-approach
#13
Muhammad Naeem Ur Razaq, Muhammad Ayaz Khan, Abbas Ali
OBJECTIVE: Involvement of both columns in acetabular fractures is a common presentation; these fractures create a challenging situation for the surgeons in terms of understanding the dimensions of osseous injury and selection of surgical approach. The study was done with an objective to evaluate the efficacy of single posterior approach for acetabular fractures involving both columns directly reducing the posterior wall and column and indirectly reducing the anterior column. METHODS: An evaluation of 25 adult patients 18 male and 7 female presenting in the accident and emergency department of Khyber Teaching Hospital from December 2013 to June 2015 having acetabular fracture involving both the anterior and posterior column were included in this case series study...
October 2016: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28583942/management-of-endocrine-disease-risk-of-overtreatment-of-patients-with-adrenal-insufficiency-current-and-emerging-aspects
#14
Gherardo Mazziotti, Anna Maria Formenti, Stefano Frara, Elisa Roca, Pietro Mortini, Alfredo Berruti, Andrea Giustina
The effects of long-term replacement therapy of adrenal insufficiency (AI) are still a matter of controversy. In fact, the established glucocorticoid replacement regimens do not completely mirror the endogenous hormonal production and the monitoring of AI treatment may be a challenge for the lack of reliable biochemical markers. Consequently, several AI patients may be exposed to relative glucocorticoid excess that, even if mild, may potentially lead to development of chronic complications, such as diabetes mellitus, dyslipidemia, hypertension and fragility fractures with consequent impaired QoL and increased mortality risk...
June 5, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28577448/wettability-alteration-of-oil-wet-limestone-using-surfactant-nanoparticle-formulation
#15
Lezorgia N Nwidee, Maxim Lebedev, Ahmed Barifcani, Mohammad Sarmadivaleh, Stefan Iglauer
Wettability remains a prime factor that controls fluid displacement at pore-scale with substantial impact on multi-phase flow in the subsurface. As the rock surface becomes hydrophobic, any oleic phase present is tightly stored in the rock matrix and produced (hydrocarbon recovery) or cleaned up (soil-decontamination) by standard waterflooding methods. Although surface active agents such as surfactants have been used for several decades for changing the wetting states of such rocks, an aspect that has been barely premeditated is the simultaneous blends of surfactants and nanoparticles...
April 25, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28575943/ageing-and-degradation-determines-failure-mode-on-sea-urchin-spines
#16
Monica Merino, Erika Vicente, Karen N Gonzales, Fernando G Torres
Sea urchin spines are an example of a hard natural composite with mineral and organic phases. The role of the organic phase in the response to mechanical stress was assessed by promoting the degradation of such spines by exposing them to ageing and ultraviolet (UV) irradiation. Thermal and structural characterization of the irradiated samples show that this UV irradiation treatment promotes degradation of the organic and inorganic phase of spines. Uniaxial compression tests carried out on aged and UV irradiated samples showed that both treatments affected the mechanical properties of the spines...
September 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28556567/revisiting-the-concept-of-inflammatory-cell-induced-corrosion
#17
Nathaniel Yuan, Sang-Hyun Park, James V Luck, Patricia A Campbell
A peculiar type of surface pitting damage to revised joint replacement implant metal surfaces has been attributed to cellular activity and termed "inflammatory cell-induced-corrosion." We visually examined 1859 explanted metal implants to document the presence and extent of these features. The data was used to examine correlations between these features and the implant material, and modularity as well as clinical variables. The features were observed in approximately 77% of modular and 30% of monobloc hip implants in a variety of metals, as well as to some degree in various other implants...
May 26, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28554104/capitellar-fracture-with-bony-avulsion-of-the-lateral-collateral-ligament-in-a-child-case-report
#18
M Fuad, A Elmhiregh, A Motazedian, M Bakdach
INTRODUCTION: Isolated capitellar fracture is a rare injury accounting for 1% of all elbow fractures Bryan and Morrey (1985) and Poynton et al. (1998). In children, a fall on an outstretched hand, before the fusion of the epiphysis, usually leads to lateral condyle physeal fractures. Very few cases of capitellar fractures in the paediatric population have been reported. PRESENTATION OF CASE: Our patient, a 9-year-old girl presented with a capitellar fracture and lateral collateral ligament (LCL) avulsion of her left elbow...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28542710/behavioral-inferences-from-the-high-levels-of-dental-chipping-in-homo-naledi
#19
Ian Towle, Joel D Irish, Isabelle De Groote
OBJECTIVES: A variety of mechanical processes can result in antemortem dental chipping. In this study, chipping data in the teeth of Homo naledi are compared with those of other pertinent dental samples to give insight into their etiology. MATERIALS AND METHODS: Permanent teeth with complete crowns evidencing occlusal wear were examined macroscopically. The location, number, and severity of fractures were recorded and compared to those found in samples of two other South African fossil hominin species and in samples of nonhuman primates (n = 3) and recent humans (n = 7)...
May 24, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28541308/the-controlled-disassembly-of-mesostructured-perovskites-as-an-avenue-to-fabricating-high-performance-nanohybrid-catalysts
#20
Yuan Wang, Hamidreza Arandiyan, Hassan A Tahini, Jason Scott, Xin Tan, Hongxing Dai, Julian D Gale, Andrew L Rohl, Sean C Smith, Rose Amal
Versatile superstructures composed of nanoparticles have recently been prepared using various disassembly methods. However, little information is known on how the structural disassembly influences the catalytic performance of the materials. Here we show how the disassembly of an ordered porous La0.6Sr0.4MnO3 perovskite array, to give hexapod mesostructured nanoparticles, exposes a new crystal facet which is more active for catalytic methane combustion. On fragmenting three-dimensionally ordered macroporous (3DOM) structures in a controlled manner, via a process that has been likened to retrosynthesis, hexapod-shaped building blocks can be harvested which possess a mesostructured architecture...
May 25, 2017: Nature Communications
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