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https://www.readbyqxmd.com/read/28323767/how-to-get-to-the-distal-posterior-tibial-malleolus-a-cadaveric-anatomic-study-defining-the-access-corridors-through-3-different-approaches
#1
Mathieu Assal, Miki Dalmau-Pastor, Adrien Ray, Richard Stern
OBJECTIVE: Our objective is to review the anatomy and exposure of the posterior column and posterior tibial malleolus (the posterior tibial plafond) by defining the access corridors through 3 different approaches-posteromedial, posterolateral, and modified posteromedial. METHODS: Cadaveric dissection with percentage of posterior tibial malleolus exposed, and strain gauge measurements to evaluate traction on the neurovascular bundle. RESULTS: The 3 different approaches are applicable for exposure of different portions of the distal posterior tibial malleolus...
April 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28298228/is-transport-distance-correlated-with-animal-welfare-and-carcass-quality-of-reindeer-rangifer-tarandus-tarandus
#2
Sauli Laaksonen, Pikka Jokelainen, Jyrki Pusenius, Antti Oksanen
BACKGROUND: Slaughter reindeer are exposed to stress caused by gathering, handling, loading and unloading, and by conditions in vehicles during transport. These stress factors can lead to compromised welfare and trauma such as bruises or fractures, aspiration of rumen content, and abnormal odour in carcasses, and causing condemnations in meat inspection and lower meat quality. We investigated the statistical association of slaughter transport distance with these indices using meat inspection data from years 2004-2016, including inspection of 669,738 reindeer originating from Finnish reindeer herding areas...
March 15, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28294326/investigation-of-fatigue-crack-initiation-facets-in-ti-6al-4v-using-focused-ion-beam-milling-and-electron-backscatter-diffraction
#3
J Everaerts, B Verlinden, M Wevers
In the very high cycle fatigue regime, internal crack initiation can occur in Ti-6Al-4V because of the formation of facets, which are α grains that have fractured in a transcrystalline and planar manner. Because this crack initiation phase occupies most of the fatigue life, it is essential to understand which mechanisms lead to facet formation. Fatigue tests have been performed on drawn and heat-treated Ti-6Al-4V wires, and the facets at internal crack initiation sites have been analysed in detail in terms of their appearance, their spatial orientation and their crystallographic orientation...
March 15, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28291432/comparison-of-non-compression-and-compression-interlocking-intramedullary-nailing-in-rabbit-femoral-shaft-osteotomy-model
#4
Mehmet Emre Baki, Cengiz Aldemir, Fatih Duygun, Ali Doğan, Gökçen Kerimoğlu
OBJECTIVES: This study aims to compare non-compression and compression intramedullary nailing in an experimental femoral shaft osteotomy model in terms of radiological, histological, and biomechanical aspects. MATERIALS AND METHODS: Twenty-four white New Zealand rabbits (average weight 4.3 kg; range 4 to 4.8 kg) were divided into three groups. A right femoral osteotomy was performed in all rabbits and all femurs were fixed with titanium compression interlocking intramedullary nail...
April 2017: Eklem Hastalıkları Ve Cerrahisi, Joint Diseases & related Surgery
https://www.readbyqxmd.com/read/28280873/radial-nerve-palsy-in-humeral-shaft-fractures-with-internal-fixation-analysis-of-management-and-outcome
#5
T R Schwab, P F Stillhard, S Schibli, M Furrer, C Sommer
INTRODUCTION: The incidence of radial nerve injury after humeral shaft fractures is on average 11.8% (Shao et al., J Bone Jt Surg Br 87(12):1647-1652, 2005) representing the most common peripheral nerve injury associated with long bone fractures (Korompilias et al., Injury, 2013). The purpose of this study was to analyze our current policy and long-term outcome, regarding surgically treated humeral shaft fractures in combination with radial nerve palsy. MATERIALS AND METHODS: We retrospectively analyzed the data of patients with surgically treated humeral shaft fractures from 01/01/2003 to 28/02/2013...
March 9, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/28274036/effect-of-instrumentation-length-and-instrumentation-systems-hand-versus-rotary-files-on-apical-crack-formation-an-in-vitro-study
#6
Madhuri R Devale, M C Mahesh, Shreetha Bhandary
INTRODUCTION: Stresses generated during root canal instrumentation have been reported to cause apical cracks. The smaller, less pronounced defects like cracks can later propagate into vertical root fracture, when the tooth is subjected to repeated stresses from endodontic or restorative procedures. AIM: This study evaluated occurrence of apical cracks with stainless steel hand files, rotary NiTi RaCe and K3 files at two different instrumentation lengths. MATERIALS AND METHODS: In the present in vitro study, 60 mandibular premolars were mounted in resin blocks with simulated periodontal ligament...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28271996/multi-detector-computed-tomography-mdct-findings-of-seven-cases-with-spontaneous-regression-of-hepatocellular-carcinoma
#7
Adel El-Badrawy
PURPOSE: To review Multi-detector CT findings of seven cases with spontaneous regression of hepatocellular carcinomas (HCC). MATERIALS AND METHODS: This retrospective study included 7 patients confirmed with diagnosis of HCC. Triphasic CT scan using multi-detector CT scanner was done for all patients. They were 2 women and 5 men. 1st patient presented with metastatic HCC underwent fine needle aspiration cytology (FNAC) from vertebral metastasis. 2nd patient underwent only one session of trans-arterial chemo-lipidol...
January 2017: Gulf Journal of Oncology
https://www.readbyqxmd.com/read/28271209/tgf-%C3%AE-1-impairs-mechanosensation-of-human-osteoblasts-via-hdac6-mediated-shortening-and-distortion-of-primary-cilia
#8
Sabrina Ehnert, Vrinda Sreekumar, Romina H Aspera-Werz, Sahar O Sajadian, Elke Wintermeyer, Gunther H Sandmann, Christian Bahrs, Jan G Hengstler, Patricio Godoy, Andreas K Nussler
Transforming growth factor β (TGF-β) is a critical regulator of bone density owing to its multiple effects on cell growth and differentiation. Recently, we have shown that TGF-β1 effectively blocks bone morphogenetic protein (BMP) induced maturation of osteoblasts by upregulating histone deacetylase (HDAC) activity. The current study aimed at investigating the effect of rhTGF-β1 treatment on the expression of specific HDACs and their cellular effects, e.g., microtubule structures (primary cilia) and mechanosensation...
March 7, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/28269397/hardness-map-of-human-meta-tarsals-and-phalanges-of-toes
#9
Irfan Manarvi
Predicting location of fracture in human bones has been a keen area of research for the past few decades. A variety of tests for hardness, deformation and strain field measurement have been conducted in the past; but considered insufficient due to various limitations. Researchers therefore have proposed further studies due to inaccuracies in measurement methods, testing machines and experimental errors. Advancement and availability of hardware, measuring instrumentation and testing machines can now provide remedies to these limitations...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28262282/a-survey-of-extensor-pollicis-longus-tendon-injury-at-the-time-of-distal-radius-fractures
#10
Kiyohito Naito, Yoichi Sugiyama, Thitinut Dilokhuttakarn, Mayuko Kinoshita, Kenji Goto, Kentaro Aritomi, Yoshiyuki Iwase, Kazuo Kaneko
BACKGROUND: The purpose of this study is to investigate the presence or absence, incidence, and degree of extensor pollicis longus (EPL) tendon injury by visual confirmation of the EPL at the time of osteosynthesis for distal radius fractures. METHODS: The subjects were 25 patients (5 males and 20 females; mean age: 56 years) with distal radius fracture that had a dorsal roof fragment. During osteosynthesis using a volar locking plate, the third compartment was exposed in order to determine the EPL injury...
February 27, 2017: Injury
https://www.readbyqxmd.com/read/28259272/current-evidence-regarding-diagnostic-imaging-methods-for-pediatric-lumbar-spondylolysis-a-report-from-the-scoliosis-research-society-evidence-based-medicine-committee
#11
Charles G T Ledonio, Douglas C Burton, Charles H Crawford, Robert Shay Bess, Jacob M Buchowski, Serena S Hu, Baron S H Lonner, David W Polly, Justin S Smith, James O Sanders
BACKGROUND: Spondylolysis is common among the pediatric population, yet no formal systematic literature review regarding diagnostic imaging has been performed. The Scoliosis Research Society (SRS) requested an assessment of the current state of peer reviewed evidence regarding pediatric spondylolysis. METHODS: Literature was searched professionally and citations retrieved. Abstracts were reviewed and analyzed by the SRS Evidence-Based Medicine Committee. Level I studies were considered to provide Good Evidence for the clinical question...
March 2017: Spine Deformity
https://www.readbyqxmd.com/read/28245005/-factors-affecting-exposure-level-for-medical-staff-during-orthopedic-procedures-under-fluoroscopic-control
#12
Maria A Staniszewska, Renata Kopeć, Maciej Budzanowski, Edyta Owsiak
BACKGROUND: Extended control of staff exposure in interventional radiology has been legally required over the last few years. This is determined by a number of factors, including the type of procedure, technical conditions and methodology. In orthopedic procedures fluoroscopy is used to control surgical reconstructions. An influence of particular factors on the registered values of doses received by the members of medical team performing osteosynthesis for limb fractures is presented in this paper...
February 28, 2017: Medycyna Pracy
https://www.readbyqxmd.com/read/28227640/hardness-map-of-human-meta-tarsals-and-phalanges-of-toes
#13
Irfan Manarvi, Irfan Manarvi, Irfan Manarvi
Predicting location of fracture in human bones has been a keen area of research for the past few decades. A variety of tests for hardness, deformation and strain field measurement have been conducted in the past; but considered insufficient due to various limitations. Researchers therefore have proposed further studies due to inaccuracies in measurement methods, testing machines and experimental errors. Advancement and availability of hardware, measuring instrumentation and testing machines can now provide remedies to these limitations...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28216816/awkward-defects-around-the-elbow-the-radial-recurrent-artery-flap-revisited
#14
Maksud M Devale, Rohit P Munot, Chirag A Bhansali, Neeraj D Bhaban
BACKGROUND: Soft tissue defects on the posterior aspect of the elbow are commonly seen in patients treated with internal fixation for fractures around the elbow joint. An axial flap based on the radial recurrent artery (RRA) is very useful for such defects, especially if a posterior midline arm incision has been taken for skeletal fixation. The aim of this study is to describe the usefulness of RRA flap (based on the RRA) in the management of such defects. MATERIALS AND METHODS: We present a retrospective analysis of 4 cases managed with the RRA flap for soft tissue reconstruction of defects around the elbow joint at our institute from January 2015 to August 2016...
September 2016: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/28216752/management-of-gustilo-anderson-iii-b-open-tibial-fractures-by-primary-fascio-septo-cutaneous-local-flap-and-primary-fixation-the-fix-and-shift-technique
#15
P R Ramasamy
BACKGROUND: Open fractures of tibia have posed great difficulty in managing both the soft tissue and the skeletal components of the injured limb. Gustilo Anderson III B open tibial fractures are more difficult to manage than I, II, and III A fractures. Stable skeletal fixation with immediate soft tissue cover has been the key to the successful outcome in treating open tibial fractures, in particular, Gustilo Anderson III B types. If the length of the open wound is larger and if the exposed surface of tibial fracture and tibial shaft is greater, then the management becomes still more difficult...
January 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28211679/site-directed-immobilization-of-bmp-2-two-approaches-for-the-production-of-innovative-osteoinductive-scaffolds
#16
Barbara Tabisz, Werner Schmitz, Michael Schmitz, Tessa Luehmann, Eva Heusler, Jens-Christoph Rybak, Lorenz Meinel, Juliane E Fiebig, Thomas D Mueller, Joachim Nickel
The regenerative potential of bone is strongly impaired in pathological conditions, such as nonunion fractures. To support bone regeneration various scaffolds have been developed in the past, which have been functionalized with osteogenic growth factors such as bone morphogenetic proteins (BMPs). However, most of them required supra-physiological levels of these proteins leading to burst releases, thereby causing severe side effects. Site-specific, covalent coupling of BMP2 to implant materials might be an optimal strategy in order to overcome these problems...
March 13, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28203014/-influence-of-surface-treatment-with-sodium-hypochlorite-solution-on-dentin-bond-strength
#17
Y Wang, Y H Liang
OBJECTIVE: To evaluate the influence of sodium hypochlorite (NaOCl) solution used during root canal therapy on dentin bond strength. METHODS: In the study, 15 freshly extracted human third molars with complete dental crowns, caries and filling-free were selected. The occlusal enamel was removed perpendicular to the long axis of the tooth to expose middle flat surfaces of sound dentin. The occlusal dentin surfaces were then polished using 600-grit silicon papers for 1 min and rinsed with deionized water for 1 min...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28184361/femoral-intertrochanteric-fracture-with-spontaneous-lumbar-hernia-a-case-report
#18
Peng Luo, Xing-Wen He, Qing-Yun Chen, Hao Hong, Lei Yang
INTRODUCTION: The diagnosis of lumbar hernia can be easily missed, as it is a rare case to which most orthopedists are not exposed in their common clinical practice. Approximately 300 cases have been reported in the literature since it was first described by Barbette in 1672. CASE PRESENTATION: A 76-year-old woman who had been diagnosed with a femoral intertrochanteric fracture was sent to our department. Physical examination revealed a smooth, soft, and movable mass, with no tenderness, palpable on her left flank, which had gradually increased during the last seven years and presented with a slight feeling of swelling...
November 2016: Trauma Monthly
https://www.readbyqxmd.com/read/28183665/degradation-in-the-fatigue-crack-growth-resistance-of-human-dentin-by-lactic-acid
#19
Santiago Orrego, Huakun Xu, Dwayne Arola
The oral cavity frequently undergoes localized changes in chemistry and level of acidity, which threatens the integrity of the restorative material and supporting hard tissue. The focus of this study was to evaluate the changes in fatigue crack growth resistance of dentin and toughening mechanisms caused by lactic acid exposure. Compact tension specimens of human dentin were prepared from unrestored molars and subjected to Mode I opening mode cyclic loads. Fatigue crack growth was achieved in samples from mid- and outer-coronal dentin immersed in either a lactic acid solution or neutral conditions...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28164067/an-uncommon-combination-of-fractures-around-the-elbow-capitellum-fracture-associated-with-radial-head-fracture
#20
Osman Walid, Braiki Meriem, Alaya Zeineb, Naouar Nader, Ben Ayeche Mohamed
INTRODUCTION: The coexistence of fractures of capitulum humeri and radial head in the elbow joint is a rare entity. CASE REPORT: A 30-year-old woman was admitted to our hospital after having sustained a fall on her outstretched right arm. She complained of pain, swelling, and restriction of motion of the right elbow joint. Anteroposterior and lateral radiographs revealed displaced fractures in the capitellum and the radial head. The patient was operated. Fractures were exposed through a lateral (Kocher) incision...
September 2016: Journal of Orthopaedic Case Reports
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