Relevant bibliographies by topics / Mechanical trauma

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Mechanical trauma'

Author: Grafiati
Published: 24 April 2022
Last updated: 29 May 2022

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Journal articles on the topic "Mechanical trauma"

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Kirkness, Colin M. "Mechanical ocular trauma." Current Opinion in Ophthalmology 4, no. 4 (August 1993): 106–11. http://dx.doi.org/10.1097/00055735-199308000-00016.

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Guthoff, Rudolf F., and Ria Beck. "Mechanical ocular trauma." Current Opinion in Ophthalmology 5, no. 4 (August 1994): 105–9. http://dx.doi.org/10.1097/00055735-199408000-00015.

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Wagner, Peter J., and Gerhard K. Lang. "Mechanical ocular trauma." Current Opinion in Ophthalmology 7, no. 4 (August 1996): 57–64. http://dx.doi.org/10.1097/00055735-199608000-00011.

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Black, Anne Kobza. "Mechanical trauma and urticaria." American Journal of Industrial Medicine 8, no. 4-5 (1985): 297–303. http://dx.doi.org/10.1002/ajim.4700080408.

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Papadakos, Peter J., Marcin Karcz, and Burkhard Lachmann. "Mechanical ventilation in trauma." Current Opinion in Anaesthesiology 23, no. 2 (April 2010): 228–32. http://dx.doi.org/10.1097/aco.0b013e328336ea6e.

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Huynh, Hieu, Gregory Siroky, Devendra Bisht, Patrick Lam, Asad Mohammad, and Davendra Mehta. "Partial Fracture of a Subcutaneous ICD Lead from Mechanical Trauma." Clinical Cardiology and Cardiovascular Interventions 3, no. 6 (June 30, 2020): 01–04. http://dx.doi.org/10.31579/2641-0419/059.

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Transvenous implantable cardioverter-defibrillators (TV-ICD) have electrode failure rates as high as 20% over a 10 year followup with 12% as a result of lead fractures. [1] The development of the Boston Scientific subcutaneous ICD (S-ICD) promoted the benefit of significantly reduced post-implant complication rates. [4] We present the first reported case of a S-ICD electrode failure secondary to partial fracture as a result of mechanical trauma.
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EREMIA, SORIN. "The Minimal Mechanical Trauma Technique." Dermatologic Surgery 23, no. 12 (December 1997): 1224. http://dx.doi.org/10.1111/j.1524-4725.1997.tb00485.x.

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Benita, Katharina Ratri, Hendrian Dwikoloso Soebagjo, and Siprianus Ugroseno Yudho Bintoro. "THE RELATIONSHIP OF MECHANICAL OCULAR TRAUMA AND THE BEST-CORRECTED VISUAL ACUITY RESULTS IN DR. SOETOMO GENERAL ACADEMIC HOSPITAL, SURABAYA, INDONESIA." Majalah Biomorfologi 31, no. 1 (January 29, 2021): 24. http://dx.doi.org/10.20473/mbiom.v31i1.2021.24-30.

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Background: Ocular trauma is an accident caused by a foreign object that affects the eye tissue. Ocular trauma can cause pain and a decrease in the person’s best-corrected visual acuity. Mechanical ocular traumas can cause morphological and functional eye changes that are serious enough to cause blindness. Blindness is often used to describe a severe visual impairment with the remaining visual function. Objective: To determine and to analyze the relationship between mechanical ocular trauma and the best-corrected visual acuity of the patients of Dr. Soetomo General Academic Hospital, Surabaya, Indonesia in 2016-2018. Material and Method: This study was an analytic study with a cross-sectional design. The data were collected using the medical records of the patients of Dr. Soetomo General Academic Hospital, Surabaya, Indonesia in 2016-2018. The population of this study consists of all patients with pure mechanical ocular trauma with a total of 198 subjects. Results: Fisher exact test results showed a value of p=0.054, showing that there was no significant relationship between the best-corrected visual acuity and mechanical ocular trauma. Conclusion: No significant relationship was present between mechanical ocular trauma and the best-corrected visual acuity (BCVA) based on the medical record of patients with ocular trauma in Dr. Soetomo General Academic Hospital, Surabaya, Indonesia, Surabaya, in 2016–2018. Most of the patients had BCVA 6/24 - 2 meter counting finger.
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Benita, Katharina Ratri, Hendrian Dwikoloso Soebagjo, and Siprianus Ugroseno Yudho Bintoro. "THE RELATIONSHIP OF MECHANICAL OCULAR TRAUMA TO THE BEST-CORRECTED VISUAL ACUITY RESULTS IN DR SOETOMO GENERAL HOSPITAL SURABAYA." Majalah Biomorfologi 31, no. 1 (January 29, 2021): 27. http://dx.doi.org/10.20473/mbiom.v31i1.2021.27-33.

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Background: Ocular trauma is an accident caused by a foreign object that affects the eye tissue. Ocular trauma can cause pain and a decrease in the person’s best-corrected visual acuity. Mechanical ocular traumas can cause morphological and functional eye changes that are serious enough to cause blindness. Blindness is often used to describe a severe visual impairment with the remaining visual function. Objective: To determine and to analyze the relationship between mechanical ocular trauma and the best-corrected visual acuity of Dr. Soetomo General Hospital patients in 2016-2018. Material and Method: This study was an analytic study with a cross-sectional design. The data was collected using the medical records of Dr. Soetomo General Hospital patients in 2016-2018. The population of this study consists of all patients with pure mechanical ocular trauma with a total of 198 subjects. Results: Fisher exact test results showed a value of p=0.054 which means there is no significant relationship between the best-corrected visual acuity with mechanical ocular trauma. Conclusion: The results of this study showed that there is no significant relationship between mechanical ocular trauma and the best-corrected visual acuity (BCVA) based on the medical record of patients with ocular trauma in Dr. Soetomo General Hospital Surabaya in 2016–2018, on the most results with patients who have BCVA 6/24 - 2 meter finger count.
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Manson-Hing, Lincoln R. "X-ray evidence of mechanical trauma." Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology 100, no. 2 (August 2005): S67—S74. http://dx.doi.org/10.1016/j.tripleo.2005.05.001.

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Dissertations / Theses on the topic "Mechanical trauma"

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Santos, Leonardo Soriano de Mello 1976. "Mechanical evaluation of trauma in human edentulous mandible = Avaliação mecânica de traumas em mandíbula humana desdentada." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/290288.

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Orientador: Felippe Bevilacqua Prado
Texto em português e inglês
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba
Made available in DSpace on 2018-08-24T15:39:41Z (GMT). No. of bitstreams: 1 Santos_LeonardoSorianodeMello_D.pdf: 5429203 bytes, checksum: 6594ad07ccd4971bea96d755aacbb2a3 (MD5) Previous issue date: 2014
Resumo: O objetivo deste estudo foi analisar a distribuição de tensões de cargas aplicadas em sínfise de mandíbula desdentada humana de idoso por meios de análise fotoelástica e de elementos finitos. Foram analisadas correlações entre as cargas aplicadas e as tensões registradas. Os testes de carga em resina fotoelástica foram realizados em uma máquina acoplada a um polariscópio e uma câmera digital. Cargas perpendiculares foram aplicadas em sínfise. Cargas variaram de 50 a 723 Newtons. Uma tomografia computadorizada foi realizada para gerar um modelo digital da mandíbula macerada. Os modelos computadorizados para a análise de elementos finitos (AEF) foram caracterizados de acordo com as propriedades mecânicas da resina epóxi e do osso. As áreas 1, 2, 3 e 4 exibiram franjas isocromáticas de ordem 2 em cargas 150 a 300N, e franjas de ordem 3 em cargas de 350 a 700N. Os stresses de vonMises se distribuíram similarmente em ambos os modelos caracterizados como resina epóxi e osso.Houve uma excelente (rP> 0.9) e significante (p < 0.05) correlação entre as cargas aplicadas e as respostas obtidas em todas as áreas apesar de algumas delas como as 9 e 10 no corpo mandibular que demonstraram correlações muito boa (rP> 0.7) e significante (p <0.05) respectivamente
Abstract: The aim of this study was to analyze the distribution of stresses from loads applied on symphysis in human elderly edentulous mandible by photoelastic analysis and FEA. Correlations between the applied load and stress tension at each evaluated area were evaluated. Load tests on the photoelastic resin model of edentulous macerated hemimandible were performed in a testing machine equipped with polariscope and a digital camera. Perpendicular loads were applied on symphysis area.Loads ranged from 50 to 723 N. CT was performed on the same mandible used to generate the photoelastic resin model. Computational models to the FEA were characterized according to the mechanical properties of epoxy resin and bone. 1, 2, 3 and 4 areas showed fringes order 2 in loads of 150 to 300N, and fringes order 3 in loads of 350 to 700N. von Mises stress were distributed similarly in both characterized models, epoxy resin and bone. There was an excellent (rP> 0.9) and significant (p < 0.05) correlation between the loads applied and the responses obtained in all areas, regardless of the area considered but areas 9 and 10 for the mandibular body, which showed very good (rP> 0.7) and significant (p <0.05)correlation
Doutorado
Anatomia
Doutor em Biologia Buco-Dental
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Kilinc, Devrim Barbee Kenneth A. "Mechanisms and prevention of axonal damage in response to mechanical trauma to cultured neurons /." Philadelphia, Pa. : Drexel University, 2008. http://hdl.handle.net/1860/2760.

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Glenn, L. Lee. "Feasibility and Toleration Criteria in the Withdrawal of Sedation and Mechanical Ventilation in Trauma Patients." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etsu-works/7516.

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Figueroa-Ramosa et al. (2013) concluded that the combination of sedation withdrawal and mechanical ventilation withdrawal trial was feasible and well tolerated. The conclusion is not well supported because of the absence of a comparison to the uncombined protocol and due to evidence that the patients did not tolerate them particularly well.
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Bedford, Lee. "Measurement Invariance of a Posttraumatic Stress Disorder Symptoms Measure (PCL-5) in College Student and Amazon's Mechanical Turk Samples." Thesis, University of North Texas, 2020. https://digital.library.unt.edu/ark:/67531/metadc1707346/.

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College student and Amazon's Mechanical TURK (MTURK) samples are regularly utilized in trauma research. Recent literature, however, has criticized these samples for not being generalizable to the general U.S. population. Measurement invariance (MI) using confirmatory factor analyses (CFA), is rarely utilized in trauma research, even though the analysis can determine whether groups are invariant across factor structure, factor loadings, item intercepts, and residual error variances on a given measure of PTSD symptom severity. The purpose of this study was to determine whether college student (n = 255) and MTURK (n = 316) samples are invariant on the PCL-5. Model fit indices indicated the 7-factor Hybrid model was the best fitting model, but the 6-factor anhedonia model was the most parsimonious model. Both models demonstrated equivalence in factor structures (configural invariance), factor loadings (metric invariance), intercepts (scalar invariance), and residuals (strict invariance), indicating MTURK and college student samples are similar in regards to PTSD symptom severity. These findings provide evidence that these groups can be combined in future studies to increase sample size for trauma research. Only the Anhedonia factor exhibited mean differences between groups, which may be related to true differences between college students and MTURK survey-takers. Thus, there is further evidence that the findings from trauma studies using these populations are generalizable to each other.
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Gustafson, Hannah Marie. "Correlation of Liver Injury and Biomechanical Predictors: A Study of Lateral and Oblique Impacts to Post‐Mortem Human Subjects." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1250604195.

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Szabo, Emily. "DEVELOPMENT OF A FINITE ELEMENT MODEL OF THE PEDIATRIC FEMUR FOR THE STUDY OF NON-ACCIDENTAL TRAUMA IN YOUNG CHILDREN." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1585685953928917.

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Robinson, Bryce RH M. D. "Implications of acute resuscitation and mechanical ventilation strategies upon pulmonary complications following injury." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1427882608.

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Forbes, Patrick. "Development of a Human Body Model for the Analysis of Side Impact Automotive Thoracic Trauma." Thesis, University of Waterloo, 2005. http://hdl.handle.net/10012/903.

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Occupant thoracic injury incurred during side impact automotive crashes constitutes a significant portion of all fatal and non-fatal automotive injuries. The limited space between the impacting vehicle and occupant can result in significant loads and corresponding injury prior to deceleration of the impacting vehicle. Within the struck vehicle, impact occurs between the occupant and various interior components. Injury is sustained to human structural components such as the thoracic cage or shoulder, and to the internal visceral components such as the heart, lungs, or aorta. Understanding the mechanism behind these injuries is an important step in improving the side impact crash safety of vehicles. This study is focused on the development of a human body numerical model for the purpose of predicting thoracic response and trauma in side impact automotive crash.

The human body model has been created using a previously developed thoracic numerical model, originally used for predicting thoracic trauma under simple impact conditions. The original version of the thorax model incorporated three-dimensional finite element representations of the spine, ribs, heart, lungs, major blood vessels, rib cage surface muscles and upper limbs. The present study began with improvements to the original thorax model and furthered with the development of remaining body components such that the model could be assessed in side impact conditions.

The improvements to the thoracic model included improved geometry and constitutive response of the surface muscles, shoulder and costal cartilage. This detailed thoracic model was complimented with a pelvis, lower limbs, an abdomen and a head to produce the full body model. These components were implemented in a simplified fashion to provide representative response without significant computational costs. The model was developed and evaluated in a stepwise fashion using experimental data from the literature including side abdominal and pelvic pendulum impact tests.

The accuracy of the model response was investigated using experimental testing performed on post mortem human subjects (PMHS) during side and front thoracic pendulum impacts. The model produced good agreement for the side thoracic and side shoulder pendulum impact tests and reasonable correlation during the frontal thoracic pendulum impact test. Complex loading via side sled impact tests was then investigated where the body was loaded unbelted in a NHTSA-type and WSU-type side sled test system. The thorax response was excellent when considering force, compression and injury (viscous criterion) versus time. Compression in the thorax was influenced by the arm position, which when aligned with the coronal plane produced the most aggressive form of compressive loading possible. The simplified components provided good response, falling slightly outside experimental response corridors defined as one standard deviation from the average of the experimental PMHS data. Overall, the predicted model response showed reasonable agreement with the experimental data, while at the same time highlighting areas for future developments. The results from this study suggested that the numerical finite element model developed herein could be used as a powerful tool for improving side impact automotive safety.
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Бончев, Сергій Дмитрович, Сергей Дмитриевич Бончев, and Serhii Dmytrovych Bonchev. "Особливості загоєння шкіри із змодельованою механічною травмою при використанні хітозанового покриття." Thesis, Сумський державний університет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/35742.

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З інтенсифікацією життєдіяльності людини збільшується ризик травматизації людини в побуті, на виробництві, що пов’язаний з урбанізацією суспільства. В зв’язку з цим збільшується кількість випадків механічного ураження шкірних покривів, яке проявляється у вигляді саден, порізів, розривів шкіри. Вони виникають внаслідок дії чинника безпосередньо на шкіру. При цитуванні документа, використовуйте посилання http://essuir.sumdu.edu.ua/handle/123456789/35742
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Lavor, Maria Francielze Holanda. "Clinical-epidemiological characteristics of the mechanical trauma in children and adolescents in a tertiary public hospital of the City of Fortaleza." Universidade Federal do CearÃ, 2006. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=758.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior
Trauma is not only a serious sickness, but also a significant Public Health problem, since it is the primary pediatric mortality cause in developed countries and a determinative factor of transitory or permanent sequelae. AIMS: establish the clinical-epidemiological profile of mechanical trauma in children and adolescents, in a third Fortaleza city Count Hospital in Ceara state. METHOD: hospital based prospective observational study, proceeded with patients from zero to 19 years-old, victims of mechanical trauma, admitted by Instituto Dr. Jose Frota from February to July of 2005, being accompanied until to final moment (hospital discharge, obit or transfer). Studied variables were related to the socioeconomic and demographic conditions of patients and their families. Respect to the trauma, it was studied mechanism, type and consequences. RESULTS: 697 children were studied. Male gender was predominant (80.2%), as well as those 15 to 19 year-olds (47.8%); 53.1% came from country and 73.7% came from urban zone. Sunday was the predominant day of traumatic events (22.2%) and the afternoon time represented 37% of the cases. Mother was the primary caregiver in 69.7%. The main trauma mechanism was the drop (32.5%), followed by aggressions (25%). Skeletal trauma was the major type of trauma (60.1%), followed by traumatic brain injury (41%); 95% had light severity. Most of patients (92.1%) were discharged from hospital, 3.3% evolved to obit, 51% presented sequelae, but in 49.4% functional capacity was preserved and in 1.1% it was completely compromised.CONCLUSIONS: Trauma was more frequent among 15 to 19 year-olds and in male children and adolescents. The main trauma mechanism was the drop, being the skeletal trauma the most found. Most of cases had light severity, having motor transitory sequel as the central consequence. Most of patients were discharged from hospital and had their functional capacities preserved or simply partially compromised. Only 1.1% had invalidating or definitive sequelae
O trauma constitui-se nÃo apenas uma grave doenÃa, mas um significativo problema de SaÃde PÃblica, em virtude de ser a principal causa de mortalidade pediÃtrica nos paÃses desenvolvidos e fator determinante de sequelas transitÃrias ou permanentes.OBJETIVOS: determinar o perfil clÃnico-epidemiolÃgico do trauma mecÃnico em crianÃas e adolescentes, em um Hospital PÃblico TerciÃrio do MunicÃpio de Fortaleza no Estado do CearÃ. MÃTODO: estudo observacional, prospectivo, de base hospitalar, realizado com pacientes de zero a 19 anos vÃtimas de trauma mecÃnico, admitidos no Instituto Dr. Josà Frota no perÃodo de fevereiro a julho de 2005, sendo seguidos atà o momento do desfecho (alta hospitalar, Ãbito ou transferÃncia). Foram estudadas variÃveis relacionadas Ãs condiÃÃes socioeconÃmicas e demogrÃficas referentes ao paciente e sua famÃlia. Em relaÃÃo ao trauma estudou-se o mecanismo, o tipo e as consequÃncias. RESULTADOS: foram estudadas 697 crianÃas. Houve predominÃncia do sexo masculino (80,2%) e da faixa etÃria de 15 a 19 anos (47,8%); 53,1% foram procedentes do Interior e 73,7% da zona urbana. Domingo foi o dia em que predominaram os eventos traumÃticos (22,2%) e o turno da tarde representou 37% dos casos. A mÃe foi o cuidador primÃrio em 69,7%. A queda foi o principal mecanismo de trauma (32,5%) seguido das agressÃes (25%). O trauma esquelÃtico foi o principal tipo de trauma (60,1%) seguido de trauma cranioencefÃlico (41%); 95% tiveram gravidade leve. A maioria dos pacientes (92,1%) recebeu alta hospitalar, 3,3% evoluÃram para Ãbito, 51% apresentaram sequela, mas em 49,4% a capacidade funcional foi preservada e em 1,1% totalmente comprometida. CONCLUSÃES: trauma foi mais frequente na faixa etÃria de 15 a 19 anos e em crianÃas e adolescentes do sexo masculino. O principal mecanismo de trauma mecÃnico foi queda, sendo o trauma esquelÃtico o tipo mais encontrado. A maioria dos casos foi de gravidade leve, conduzindo a sequela motora transitÃria como principal consequencia, tendo a maioria dos pacientes recebidos alta hospitalar, com a capacidade funcional preservada ou apenas parcialmente comprometida. Apenas 1,1% tiveram sequela invalidante ou definitiva
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Books on the topic "Mechanical trauma"

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Yan, Hua, ed. Mechanical Ocular Trauma. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-2150-3.

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Maul, Timothy M. Mechanical blood trauma in circulatory-assist devices. New York: ASME Press, 2015.

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F, Robben Simon G., and Rijn Rick R. van, eds. Forensic aspects of pediatric fractures: Differentiating accidental trauma from child abuse. Berlin: Springer, 2010.

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D, Johnson Kenneth, ed. Biomechanics in orthopedic trauma: Bone fracture and fixation. London: M. Dunitz, 1994.

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F, Niederer Peter, Walz Felix H, Muser Markus H, and SpringerLink (Online service), eds. Trauma Biomechanics: Accidental injury in traffic and sports. Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg, 2010.

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Freivalds, Andris. Biomechanics of the upper extremities: Mechanics, modeling, and musculoskeletal injuries. 2nd ed. Boca Raton, FL: CRC Press, 2011.

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Freivalds, Andris. Biomechanics of the upper limbs: Mechanics, modeling, and musculoskeletal injuries. New York: Taylor & Francis, 2004.

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Freivalds, Andris. Biomechanics of the upper limbs: Mechanics, modeling, and musculoskeletal injuries. Boca Raton, FL: CRC Press, 2004.

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Dynamic bodyuse for effective strain-free massage. Chichester, England: Lotus Pub., 2007.

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Yan, Hua. Mechanical Ocular Trauma: Current Consensus and Controversy. Springer, 2018.

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Book chapters on the topic "Mechanical trauma"

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Sartor, Klaus. "Mechanical Trauma." In MR Imaging of the Skull and Brain, 207–48. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-75525-5_5.

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Lee, Richard K., and Mohamed S. Sayed. "Anterior Segment Trauma." In Mechanical Ocular Trauma, 7–38. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2150-3_2.

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Smiddy, William E. "Posterior Segment Trauma." In Mechanical Ocular Trauma, 39–48. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2150-3_3.

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Man, H. S. Jeffrey. "Mechanical Ventilation, Conventional." In Encyclopedia of Trauma Care, 908–18. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-29613-0_250.

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Capello, Elena Cecilia, and Cesare Gregoretti. "Mechanical Ventilation, Noninvasive." In Encyclopedia of Trauma Care, 924–27. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-29613-0_252.

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Adeniji, Kayode, and M. Elizabeth Wilcox. "Mechanical Ventilation, Weaning." In Encyclopedia of Trauma Care, 933–37. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-29613-0_254.

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Gurelik, Gokhan, and Sabahattin Sul. "Mechanical Ocular Trauma in Children." In Mechanical Ocular Trauma, 93–116. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2150-3_6.

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Yan, Hua, Yuanyuan Liu, and Song Chen. "Introduction." In Mechanical Ocular Trauma, 1–5. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2150-3_1.

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Yan, Hua, Jiaxing Wang, Caiyun You, and Xiangda Meng. "Intraocular Foreign Bodies." In Mechanical Ocular Trauma, 49–67. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2150-3_4.

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Ozdek, Sengul, and Mehmet Cuneyt Ozmen. "Traumatic Endophthalmitis." In Mechanical Ocular Trauma, 69–92. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2150-3_5.

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Conference papers on the topic "Mechanical trauma"

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SUELLEN FONSÊCA, ANGÉLICA RODRIGUES ARAUJO, MARIA EMILIA CHAVES, and MARCOS PINOTTI. "DISPOSITIVE PHOTOBIOMODULADOR FOR TREATMENT TRAUMA NIPPLE TRAUMA." In 23rd ABCM International Congress of Mechanical Engineering. Rio de Janeiro, Brazil: ABCM Brazilian Society of Mechanical Sciences and Engineering, 2015. http://dx.doi.org/10.20906/cps/cob-2015-2548.

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Arnone, Joshua C., Carol V. Ward, Gregory J. Della Rocca, Brett D. Crist, and A. Sherif El-Gizawy. "Simulation-Based Design of Orthopedic Trauma Implants." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-40936.

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A computer-aided simulation model is developed to aid in the design and optimization of orthopaedic trauma implants. The developed model uses digital imaging, computer-aided solid modeling, and finite element methods in order to study the effects of various geometric parameters of fixation devices in orthopedic surgery practice. The results of the present simulation model would lead to the determination of the optimum implant design that provides the best match with the geometry of the human femur — reducing the risk of over-stressing bone tissue during implant insertion. The effectiveness of the presented simulation model is demonstrated through the design of intramedullary (IM) nails used in treating femoral shaft fractures. CT scans were taken of forty intact human femora. A technique was developed in order to digitally reconstruct the scans into 3D solid models using image segmentation, surface simplification, and smoothing methods while maintaining accurate representation of the original scans. Each resulting surface model is characterized by a network of nearly equilateral triangles of approximately the same size allowing for quality finite element meshing. Femoral lengths, curvature, shaft diameters, and location of maximum curvature were then quantified. An average geometric model was then generated for the investigated sample by averaging corresponding nodal coordinates in each femur model. Using the average model, a length-standardized function representing the curvature of the medullary canal was derived to create a geometrically optimized IM nail for the entire sample. “Virtual surgery” simulating the insertion process was then performed using finite element methods in order to validate the proposed optimal IM nail design. The results of both the optimum nail and a current nail were compared using the femur having the highest curvature in the sample. The present study shows that the developed simulation model leads to a nail design that reduces the insertion-induced stress within the femur to an acceptable level compared to current nails.
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Yoganandan, Narayan, and Frank A. Pintar. "Facet Joint Local Component Kinetics in Whiplash Trauma." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0308.

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Abstract The term whiplash was introduced in 1928. Since its introduction, it has been primarily dedicated to refer to the sequela of events stemming from vehicular rear-end crashes wherein the human body is initially accelerated from back to front through dynamic impact. Other terminologies have included cantilever injury, hyperextension injuries, cervical sprain/strain, and acceleration-deceleration syndrome. It is estimated that 86% of all clinically seen neck injuries result from motor vehicle crashes and that 85% of these injuries occur due to rear-end impact. Precise estimates for the actual incidence and the associated economics of the injury are not easily available. This is primarily due to the multitude of variables involved in the production and assessment of trauma. Vehicular factors, occupant demographics and positioning at the time of crash, and collision variables together with the human tolerance constitute a significant body of parameters responsible for the injury sequela; symptoms may be acute or chronic. A generally reported incidence rate of whiplash injury is about one in 1000 in Western countries and approximately 25% of the patients become chronic with 10% suffering serious pain [1].
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Hampton, Carolyn E., and Michael Kleinberger. "Computational Human Torso Model Validation for Frontal Blunt Trauma." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-88382.

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Recent research on behind-armor blunt trauma (BABT) has focused on the personal protection offered by lightweight armor. A finite element analysis was performed to improve the biofidelity of the US Army Research Laboratory (ARL) human torso model to prepare for simulating blunt chest impacts and BABT. The overly stiff linear elastic material models for the torso were replaced with material characterizations drawn from current literature. FE torso biofidelity was determined by comparing peak force, force-compression, peak compression, and energy absorption data with cadaver responses to a 23.5 kg pendulum impacting at the sternum at 6.7 m/s. Nonlinear foam, viscous foam, soft rubbers, fibrous hyperelastic rubbers, and low moduli elastic material were considered as material models for the flesh, organs, and bones. Simulations modifying one tissue type revealed that the flesh characterization was most crucial for predicting compression and force, followed closely by the organs characterizations. Combining multiple tissue modifications allowed the FE torso to mimic the cadaveric torsos by reducing peak force and increasing chest compression and energy absorption. Limitations imposed by the Lagrangian finite element approach are discussed with potential workarounds described. Proposed future work is split between considering additional impact scenarios accounting for position and biomaterial variability.
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Assari, Soroush, and Kurosh Darvish. "Brain Tissue Material and Damage Properties for Blast Trauma." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-88419.

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The aim of this study was to develop a test method to characterize the material behavior of bovine brain samples in large shear deformations and high strain rates relevant to blast-induced neurotrauma (BINT) and evaluate tissue damage. A novel shear test setup was designed and built capable of applying strain rates ranging from 300 to 1000 s−1. Based on the shear force time history and propagation of shear waves, it was found that the instantaneous shear modulus (about 6 kPa) was more than 3 times higher than the values previously reported in the literature. The shear wave velocity was found to be strain path dependent which is an indication of tissue damage at strains greater than 10%. The results of this study can help in improving finite element models of the brain for simulating tissue injury during BINT.
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Sances, Anthony, and Liming Voo. "Biofidelity of the Hybrid III Neck for Spinal Trauma Assessment." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0322.

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Abstract The objective of this study was to delineate the dynamic axial compressive responses of the Hybrid head-neck system and compare with the intact human cadaver head-neck complex responses. The Hybrid III head-neck preparation was tested under dynamic loading at rates to 8.0 m/sec. Inertially compensated forces, axial deformations, and distal generalized six-axis load cell histories were gathered at dynamic sampling rates. The localized axial compressions of the neck were obtained using retroreflective target information and high-speed photography. The Hybrid III dummy responded with non-linear and rate stiffening characteristics with minimal initial softening. This was in contrast to the human cadaver tissues wherein initial softening characteristics were present in the force-deformation curves. The Hybrid III neck was found to be at least two times stiffer compared to the human under dynamic axial compressive loading. Furthermore, the shape of the Hybrid III force-deformation response was different from the human cadaver tissues. These differences must be included to properly extrapolate the results from the Hybrid III to predict injury in real-world vehicular crash environments.
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Kilinc, Devrim, Gianluca Gallo, and Kenneth Barbee. "Poloxamer 188 Reduces Axonal Beading Following Mechanical Trauma to Cultured Neurons." In 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 2007. http://dx.doi.org/10.1109/iembs.2007.4353562.

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Weed, Benjamin, Ali Borazjani, Sourav Patnaik, Rajkumar Prabhu, Thomas Franz, M. F. Horstemeyer, Lakiesha Williams, and Jun Liao. "Stress State Dependence of Human Placenta Mechanical Behavior." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53775.

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Maternal trauma affects 5–8% of all pregnancies and is the leading nonobstetric cause of maternal death in the United States [1]. The most common cause of trauma is motor vehicle accident (MVA) and the most common pathology is abruptio placentae, detachment of the placenta from uterus, which leads to serious maternal and fetal consequences [2].
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Vernon, Lauren L., David G. Wilensky, Chong Wang, Lee D. Kaplan, and Chun-Yuh C. Huang. "Mechanical Loading Reduces Chondrocyte Death After Single Impact Trauma: Porcine Knee Model." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80833.

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Osteoarthritis often results from degenerative changes induced by trauma such as joint impact injuries sustained during athletics, combat, or motor vehicle accidents. Articular cartilage, avascular in nature, relies of synovial nutrition [1] and lacks sufficient regenerative capabilities [2]. Acute cartilage injuries have been shown to induce cell death [3, 4, 5], leading to reduced chondrocyte density and degenerative changes to the cartilage matrix composition; over time the tissue becomes compromised and loses its ability to maintain and restore itself. It has been demonstrated, that mechanical loading can affect local perfusion and diffusion through the matrix thereby altering the flow of nutrients and metabolites [2, 6]. Furthermore, mechanical loading modulates the chondrocyte biosynthesis of extracellular matrix that is required in the cartilage repair process. In this study, a two part in-vitro porcine knee model was utilized to investigate articular cartilage response immediately following a single impact injury under cyclic mechanical loading conditions.
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Claudia Rossi, Ana, and Ana Paula Zanforlim. "Simulation of mechanical trauma by finite element analysis in human mandible orthotropic." In XXIII Congresso de Iniciação Científica da Unicamp. Campinas - SP, Brazil: Galoá, 2015. http://dx.doi.org/10.19146/pibic-2015-37020.

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Reports on the topic "Mechanical trauma"

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Chandra, Namas, Ruqiang Feng, C. A. Nelson, Jung Y. Lim, Joseph A. Turner, Florin Bobaru, and Mehrdad Negahban. Army-UNL Center for Trauma Mechanics. Fort Belvoir, VA: Defense Technical Information Center, March 2011. http://dx.doi.org/10.21236/ada546812.

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McDonagh, Marian, Andrea C. Skelly, Amy Hermesch, Ellen Tilden, Erika D. Brodt, Tracy Dana, Shaun Ramirez, et al. Cervical Ripening in the Outpatient Setting. Agency for Healthcare Research and Quality (AHRQ), March 2021. http://dx.doi.org/10.23970/ahrqepccer238.

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Objectives. To assess the comparative effectiveness and potential harms of cervical ripening in the outpatient setting (vs. inpatient, vs. other outpatient intervention) and of fetal surveillance when a prostaglandin is used for cervical ripening. Data sources. Electronic databases (Ovid® MEDLINE®, Embase®, CINAHL®, Cochrane Central Register of Controlled Trials, and Cochrane Database of Systematic Reviews) to July 2020; reference lists; and a Federal Register notice. Review methods. Using predefined criteria and dual review, we selected randomized controlled trials (RCTs) and cohort studies of cervical ripening comparing prostaglandins and mechanical methods in outpatient versus inpatient settings; one outpatient method versus another (including placebo or expectant management); and different methods/protocols for fetal surveillance in cervical ripening using prostaglandins. When data from similar study designs, populations, and outcomes were available, random effects using profile likelihood meta-analyses were conducted. Inconsistency (using I2) and small sample size bias (publication bias, if ≥10 studies) were assessed. Strength of evidence (SOE) was assessed. All review methods followed Agency for Healthcare Research and Quality Evidence-based Practice Center methods guidance. Results. We included 30 RCTs and 10 cohort studies (73% fair quality) involving 9,618 women. The evidence is most applicable to women aged 25 to 30 years with singleton, vertex presentation and low-risk pregnancies. No studies on fetal surveillance were found. The frequency of cesarean delivery (2 RCTs, 4 cohort studies) or suspected neonatal sepsis (2 RCTs) was not significantly different using outpatient versus inpatient dinoprostone for cervical ripening (SOE: low). In comparisons of outpatient versus inpatient single-balloon catheters (3 RCTs, 2 cohort studies), differences between groups on cesarean delivery, birth trauma (e.g., cephalohematoma), and uterine infection were small and not statistically significant (SOE: low), and while shoulder dystocia occurred less frequently in the outpatient group (1 RCT; 3% vs. 11%), the difference was not statistically significant (SOE: low). In comparing outpatient catheters and inpatient dinoprostone (1 double-balloon and 1 single-balloon RCT), the difference between groups for both cesarean delivery and postpartum hemorrhage was small and not statistically significant (SOE: low). Evidence on other outcomes in these comparisons and for misoprostol, double-balloon catheters, and hygroscopic dilators was insufficient to draw conclusions. In head to head comparisons in the outpatient setting, the frequency of cesarean delivery was not significantly different between 2.5 mg and 5 mg dinoprostone gel, or latex and silicone single-balloon catheters (1 RCT each, SOE: low). Differences between prostaglandins and placebo for cervical ripening were small and not significantly different for cesarean delivery (12 RCTs), shoulder dystocia (3 RCTs), or uterine infection (7 RCTs) (SOE: low). These findings did not change according to the specific prostaglandin, route of administration, study quality, or gestational age. Small, nonsignificant differences in the frequency of cesarean delivery (6 RCTs) and uterine infection (3 RCTs) were also found between dinoprostone and either membrane sweeping or expectant management (SOE: low). These findings did not change according to the specific prostaglandin or study quality. Evidence on other comparisons (e.g., single-balloon catheter vs. dinoprostone) or other outcomes was insufficient. For all comparisons, there was insufficient evidence on other important outcomes such as perinatal mortality and time from admission to vaginal birth. Limitations of the evidence include the quantity, quality, and sample sizes of trials for specific interventions, particularly rare harm outcomes. Conclusions. In women with low-risk pregnancies, the risk of cesarean delivery and fetal, neonatal, or maternal harms using either dinoprostone or single-balloon catheters was not significantly different for cervical ripening in the outpatient versus inpatient setting, and similar when compared with placebo, expectant management, or membrane sweeping in the outpatient setting. This evidence is low strength, and future studies are needed to confirm these findings.
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