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Author: Adam Jesse Bartsch
Publisher:
ISBN:
Category :
Languages : en
Pages : 231
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Book Description
Head and spine injuries, such as traumatic brain injury, skull fracture, concussion and osteoligamentous cervical spine injury continue to be prevalent in motor vehicle crashes, athletics and the military. Automotive safety systems, athletic safety equipment and military personal protective paraphernalia designs have generally focused on protection discretely designed on a component basis head or spine but not a systems basis, considering the head-spine linkage simultaneously. But since the cervical spine acts as the attachment point for the head, the boundary conditions applied to the cervical spine influence the behavior of the head. Hence, in analyzing injury risk for the head and the spine, each structure composes one portion of an intrinsically linked osteoligamentous system; thus injury risk for the head and the cervical spine might be more appropriately considered concurrently as opposed to individually. Historically, component-based injury protection designs have utilized head and cervical spine injury risk criteria developed from human, animal and anthropomorphic surrogate studies. While a plethora of these prior studies separately analyzed head injury risk via linear acceleration, Head Injury Criterion (HIC) or Gadd Severity Index (GSI), or cervical spine injury risk via axial/shear forces, bending moments or the Neck Injury Criterion (Nij), relatively few of these studies employed a systems-based approach to understand coupled head-cervical spine injury risk behavior. Thus, designing for optimal head and cervical spine injury protection may not be as trivial as separate consideration of head or spine component injury thresholds. Therefore, through a series of six biomechanical engineering studies that comprised the chapters of this dissertation, the work presented here broadly investigated head and cervical spine injury protection on a systems-based approach considering head and cervical spine injury risk simultaneously. In Chapter 1, injury risk in inertial loading during real-world low energy minor rear car crashes was analyzed. In Chapter 2, these minor crashes from Chapter 1 were further investigated via use of numerical simulation in MADYMO. While Chapters 1 and 2 explored low energy car crash loading, Chapter 3 explored multivariate head and cervical spine injury implications from direct head loading during frontal airbag inflation in high energy experimental car crashes. Chapter 4 expanded the direct frontal head impact loading analyzed in Chapter 3 to include oblique and lateral impact loading during impact experiments with a Hybrid III anthropomorphic test device. The low- and high-energy injury analysis methods developed in Chapters 1 through 4 helped drive the study of multivariate injury risk in response to experimental omnidirectional athletic head impacts in Chapter 5. Chapter 6 further built on the high-energy athletic impacts from Chapter 5 via Matlab and Simulink simulation of helmeted impacts using a systems dynamics approach. Finally, Chapter 7 analyzed development of an impact pendulum, pilot cadaveric injury response to direct head impact and analysis of similar impacts in a helmeted human surrogate. The results of all of these related studies indicated that head and cervical spine injury risk were interrelated during direct or inertial car crash and athletic impacts.
Author: Adam Jesse Bartsch
Publisher:
ISBN:
Category :
Languages : en
Pages : 231
Get Book Here
Book Description
Head and spine injuries, such as traumatic brain injury, skull fracture, concussion and osteoligamentous cervical spine injury continue to be prevalent in motor vehicle crashes, athletics and the military. Automotive safety systems, athletic safety equipment and military personal protective paraphernalia designs have generally focused on protection discretely designed on a component basis head or spine but not a systems basis, considering the head-spine linkage simultaneously. But since the cervical spine acts as the attachment point for the head, the boundary conditions applied to the cervical spine influence the behavior of the head. Hence, in analyzing injury risk for the head and the spine, each structure composes one portion of an intrinsically linked osteoligamentous system; thus injury risk for the head and the cervical spine might be more appropriately considered concurrently as opposed to individually. Historically, component-based injury protection designs have utilized head and cervical spine injury risk criteria developed from human, animal and anthropomorphic surrogate studies. While a plethora of these prior studies separately analyzed head injury risk via linear acceleration, Head Injury Criterion (HIC) or Gadd Severity Index (GSI), or cervical spine injury risk via axial/shear forces, bending moments or the Neck Injury Criterion (Nij), relatively few of these studies employed a systems-based approach to understand coupled head-cervical spine injury risk behavior. Thus, designing for optimal head and cervical spine injury protection may not be as trivial as separate consideration of head or spine component injury thresholds. Therefore, through a series of six biomechanical engineering studies that comprised the chapters of this dissertation, the work presented here broadly investigated head and cervical spine injury protection on a systems-based approach considering head and cervical spine injury risk simultaneously. In Chapter 1, injury risk in inertial loading during real-world low energy minor rear car crashes was analyzed. In Chapter 2, these minor crashes from Chapter 1 were further investigated via use of numerical simulation in MADYMO. While Chapters 1 and 2 explored low energy car crash loading, Chapter 3 explored multivariate head and cervical spine injury implications from direct head loading during frontal airbag inflation in high energy experimental car crashes. Chapter 4 expanded the direct frontal head impact loading analyzed in Chapter 3 to include oblique and lateral impact loading during impact experiments with a Hybrid III anthropomorphic test device. The low- and high-energy injury analysis methods developed in Chapters 1 through 4 helped drive the study of multivariate injury risk in response to experimental omnidirectional athletic head impacts in Chapter 5. Chapter 6 further built on the high-energy athletic impacts from Chapter 5 via Matlab and Simulink simulation of helmeted impacts using a systems dynamics approach. Finally, Chapter 7 analyzed development of an impact pendulum, pilot cadaveric injury response to direct head impact and analysis of similar impacts in a helmeted human surrogate. The results of all of these related studies indicated that head and cervical spine injury risk were interrelated during direct or inertial car crash and athletic impacts.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309288037
Category : Medical
Languages : en
Pages : 215
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Book Description
In the past decade, few subjects at the intersection of medicine and sports have generated as much public interest as sports-related concussions - especially among youth. Despite growing awareness of sports-related concussions and campaigns to educate athletes, coaches, physicians, and parents of young athletes about concussion recognition and management, confusion and controversy persist in many areas. Currently, diagnosis is based primarily on the symptoms reported by the individual rather than on objective diagnostic markers, and there is little empirical evidence for the optimal degree and duration of physical rest needed to promote recovery or the best timing and approach for returning to full physical activity. Sports-Related Concussions in Youth: Improving the Science, Changing the Culture reviews the science of sports-related concussions in youth from elementary school through young adulthood, as well as in military personnel and their dependents. This report recommends actions that can be taken by a range of audiences - including research funding agencies, legislatures, state and school superintendents and athletic directors, military organizations, and equipment manufacturers, as well as youth who participate in sports and their parents - to improve what is known about concussions and to reduce their occurrence. Sports-Related Concussions in Youth finds that while some studies provide useful information, much remains unknown about the extent of concussions in youth; how to diagnose, manage, and prevent concussions; and the short- and long-term consequences of concussions as well as repetitive head impacts that do not result in concussion symptoms. The culture of sports negatively influences athletes' self-reporting of concussion symptoms and their adherence to return-to-play guidance. Athletes, their teammates, and, in some cases, coaches and parents may not fully appreciate the health threats posed by concussions. Similarly, military recruits are immersed in a culture that includes devotion to duty and service before self, and the critical nature of concussions may often go unheeded. According to Sports-Related Concussions in Youth, if the youth sports community can adopt the belief that concussions are serious injuries and emphasize care for players with concussions until they are fully recovered, then the culture in which these athletes perform and compete will become much safer. Improving understanding of the extent, causes, effects, and prevention of sports-related concussions is vitally important for the health and well-being of youth athletes. The findings and recommendations in this report set a direction for research to reach this goal.
Author: Z. C. Yang
Publisher: CRC Press
ISBN: 0429592159
Category : Mathematics
Languages : en
Pages : 302
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Book Description
Finite element analysis has been widely applied to study biomedical problems. This book aims to simulate some common medical problems using finite element advanced technologies, which establish a base for medical researchers to conduct further investigations. This book consists of four main parts: (1) bone, (2) soft tissues, (3) joints, and (4) implants. Each part starts with the structure and function of the biology and then follows the corresponding finite element advanced features, such as anisotropic nonlinear material, multidimensional interpolation, XFEM, fiber enhancement, UserHyper, porous media, wear, and crack growth fatigue analysis. The final section presents some specific biomedical problems, such as abdominal aortic aneurysm, intervertebral disc, head impact, knee contact, and SMA cardiovascular stent. All modeling files are attached in the appendixes of the book. This book will be helpful to graduate students and researchers in the biomedical field who engage in simulations of biomedical problems. The book also provides all readers with a better understanding of current advanced finite element technologies. Details finite element modeling of bone, soft tissues, joints, and implants Presents advanced finite element technologies, such as fiber enhancement, porous media, wear, and crack growth fatigue analysis Discusses specific biomedical problems, such as abdominal aortic aneurysm, intervertebral disc, head impact, knee contact, and SMA cardiovascular stent Explains principles for modeling biology Provides various descriptive modeling files
Author: Narayan Yoganandan
Publisher: Springer
ISBN: 1493917323
Category : Medical
Languages : en
Pages : 855
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Book Description
This book provides a state-of-the-art look at the applied biomechanics of accidental injury and prevention. The editors, Drs. Narayan Yoganandan, Alan M. Nahum and John W. Melvin are recognized international leaders and researchers in injury biomechanics, prevention and trauma medicine. They have assembled renowned researchers as authors for 29 chapters to cover individual aspects of human injury assessment and prevention. This third edition is thoroughly revised and expanded with new chapters in different fields. Topics covered address automotive, aviation, military and other environments. Field data collection; injury coding/scaling; injury epidemiology; mechanisms of injury; human tolerance to injury; simulations using experimental, complex computational models (finite element modeling) and statistical processes; anthropomorphic test device design, development and validation for crashworthiness applications in topics cited above; and current regulations are covered. Risk functions and injury criteria for various body regions are included. Adult and pediatric populations are addressed. The exhaustive list of references in many areas along with the latest developments is valuable to all those involved or intend to pursue this important topic on human injury biomechanics and prevention. The expanded edition will interest a variety of scholars and professionals including physicians, biomedical researchers in many disciplines, basic scientists, attorneys and jurists involved in accidental injury cases and governmental bodies. It is hoped that this book will foster multidisciplinary collaborations by medical and engineering researchers and academicians and practicing physicians for injury assessment and prevention and stimulate more applied research, education and training in the field of accidental-injury causation and prevention.
Author: Fabio Galbusera
Publisher: Academic Press
ISBN: 0128128526
Category : Technology & Engineering
Languages : en
Pages : 458
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Book Description
Biomechanics of the Spine encompasses the basics of spine biomechanics, spinal tissues, spinal disorders and treatment methods. Organized into four parts, the first chapters explore the functional anatomy of the spine, with special emphasis on aspects which are biomechanically relevant and quite often neglected in clinical literature. The second part describes the mechanics of the individual spinal tissues, along with commonly used testing set-ups and the constitutive models used to represent them in mathematical studies. The third part covers in detail the current methods which are used in spine research: experimental testing, numerical simulation and in vivo studies (imaging and motion analysis). The last part covers the biomechanical aspects of spinal pathologies and their surgical treatment. This valuable reference is ideal for bioengineers who are involved in spine biomechanics, and spinal surgeons who are looking to broaden their biomechanical knowledge base. The contributors to this book are from the leading institutions in the world that are researching spine biomechanics. - Includes broad coverage of spine disorders and surgery with a biomechanical focus - Summarizes state-of-the-art and cutting-edge research in the field of spine biomechanics - Discusses a variety of methods, including In vivo and In vitro testing, and finite element and musculoskeletal modeling
Author: Kozaburo Hayashi
Publisher: Springer Science & Business Media
ISBN: 4431669515
Category : Medical
Languages : en
Pages : 278
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Book Description
The combination of readily available computing power and progress in numerical techniques has made nonlinear systems - the kind that only a few years ago were ignored as too complex - open to analysis for the first time. Now realistic models of living systems incorporating the nonlinear variation and anisotropic nature of physical properties can be solved numerically on modern computers to give realistically usable results. This has opened up new and exciting possibilities for the fusing of ideas from physiology and engineering in the burgeoning new field that is biomechanics. Computational Biomechanics presents pioneering work focusing on the areas of orthopedic and circulatory mechanics, using experimental results to confirm or improve the relevant mathematical models and parameters. Together with two companion volumes, Biomechanics: Functional Adaptation and Remodeling and the Data Book on Mechanical Properties of Living Cells, Tissues, and Organs, this monograph will prove invaluable to those working in fields ranging from medical science and clinical medicine to biomedical engineering and applied mechanics.
Author: Society of Automotive Engineers
Publisher: SAE International
ISBN:
Category : Science
Languages : en
Pages : 158
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Book Description
Thirteen papers from the biomechanics technical sessions of the 2002 SAE congress use laboratory experiments, computer models, and field data to evaluate the human body's kinematics, kinetics, and injury potential in response to impact loads caused by automobile accidents. Topics include finite elem
Author: World Health Organization
Publisher: World Health Organization
ISBN: 9241564660
Category : Medical
Languages : en
Pages : 250
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Book Description
"Every year between 250 000 and 500 000 people suffer a spinal cord injury, with road traffic crashes, falls and violence as the three leading causes. People with spinal cord injury are two to five times more likely to die prematurely. They also have lower rates of school enrollment and economic participation than people without such injuries. Spinal cord injury has costly consequences for the individual and society, but it is preventable, survivable and need not preclude good health and social inclusion. Ensuring an adequate medical and rehabilitation response, followed by supportive services and accessible environments, can help minimize the disruption to people with spinal cord injury and their families. The aims of International perspectives on spinal cord injury are to: ---assemble and summarize information on spinal cord injury, in particular the epidemiology, services, interventions and policies that are relevant, together with the lived experience of people with spinal cord injury; ---make recommendations for actions based on this evidence that are consistent with the aspirations for people with disabilities as expressed in the Convention on the Rights of Persons with Disabilities.
Author: Karol Miller
Publisher: Springer
ISBN: 3030049965
Category : Science
Languages : en
Pages : 353
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Book Description
This new edition presents an authoritative account of the current state of brain biomechanics research for engineers, scientists and medical professionals. Since the first edition in 2011, this topic has unquestionably entered into the mainstream of biomechanical research. The book brings together leading scientists in the diverse fields of anatomy, neuroimaging, image-guided neurosurgery, brain injury, solid and fluid mechanics, mathematical modelling and computer simulation to paint an inclusive picture of the rapidly evolving field. Covering topics from brain anatomy and imaging to sophisticated methods of modeling brain injury and neurosurgery (including the most recent applications of biomechanics to treat epilepsy), to the cutting edge methods in analyzing cerebrospinal fluid and blood flow, this book is the comprehensive reference in the field. Experienced researchers as well as students will find this book useful.
Author: Institute of Medicine
Publisher: National Academies Press
ISBN: 0309132991
Category : Business & Economics
Languages : en
Pages : 510
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Book Description
Every year workers' low-back, hand, and arm problems lead to time away from jobs and reduce the nation's economic productivity. The connection of these problems to workplace activities-from carrying boxes to lifting patients to pounding computer keyboards-is the subject of major disagreements among workers, employers, advocacy groups, and researchers. Musculoskeletal Disorders and the Workplace examines the scientific basis for connecting musculoskeletal disorders with the workplace, considering people, job tasks, and work environments. A multidisciplinary panel draws conclusions about the likelihood of causal links and the effectiveness of various intervention strategies. The panel also offers recommendations for what actions can be considered on the basis of current information and for closing information gaps. This book presents the latest information on the prevalence, incidence, and costs of musculoskeletal disorders and identifies factors that influence injury reporting. It reviews the broad scope of evidence: epidemiological studies of physical and psychosocial variables, basic biology, biomechanics, and physical and behavioral responses to stress. Given the magnitude of the problem-approximately 1 million people miss some work each year-and the current trends in workplace practices, this volume will be a must for advocates for workplace health, policy makers, employers, employees, medical professionals, engineers, lawyers, and labor officials.
