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Injury of high strain rate

Joseph D Lamplot, Matthew J Matava
Quadriceps and hamstring injuries occur frequently in football and are generally treated conservatively. While return to competition following hamstring strains is relatively quick, a high rate of injury recurrence highlights the importance of targeted rehabilitation and conditioning. This review describes the clinical manifestations of thigh-related soft-tissue injuries seen in football players. Two of these-muscle strains and contusions-are relatively common, while a third condition-the Morel-Lavallée lesion-is a rare, yet relevant injury...
September 2016: American Journal of Orthopedics
Héctor Gómez-Dantés, Nancy Fullman, Héctor Lamadrid-Figueroa, Lucero Cahuana-Hurtado, Blair Darney, Leticia Avila-Burgos, Ricardo Correa-Rotter, Juan A Rivera, Simon Barquera, Eduardo González-Pier, Tania Aburto-Soto, Elga Filipa Amorin de Castro, Tonatiuh Barrientos-Gutiérrez, Ana C Basto-Abreu, Carolina Batis, Guilherme Borges, Ismael Campos-Nonato, Julio C Campuzano-Rincón, Alejandra de Jesús Cantoral-Preciado, Alejandra G Contreras-Manzano, Lucia Cuevas-Nasu, Vanessa V de la Cruz-Gongora, Jose L Diaz-Ortega, María de Lourdes García-García, Armando Garcia-Guerra, Teresita González de Cossío, Luz D González-Castell, Ileana Heredia-Pi, Marta C Hijar-Medina, Alejandra Jauregui, Aida Jimenez-Corona, Nancy Lopez-Olmedo, Carlos Magis-Rodríguez, Catalina Medina-Garcia, Maria E Medina-Mora, Fabiola Mejia-Rodriguez, Julio C Montañez, Pablo Montero, Alejandra Montoya, Grea L Moreno-Banda, Andrea Pedroza-Tobías, Rogelio Pérez-Padilla, Amado D Quezada, Vesta L Richardson-López-Collada, Horacio Riojas-Rodríguez, Maria J Ríos Blancas, Christian Razo-Garcia, Martha P Romero Mendoza, Tania G Sánchez-Pimienta, Luz M Sánchez-Romero, Astrid Schilmann, Edson Servan-Mori, Teresa Shamah-Levy, Martha M Téllez-Rojo, José L Texcalac-Sangrador, Haidong Wang, Theo Vos, Mohammad H Forouzanfar, Mohsen Naghavi, Alan D Lopez, Christopher J L Murray, Rafael Lozano
BACKGROUND: Child and maternal health outcomes have notably improved in Mexico since 1990, whereas rising adult mortality rates defy traditional epidemiological transition models in which decreased death rates occur across all ages. These trends suggest Mexico is experiencing a more complex, dissonant health transition than historically observed. Enduring inequalities between states further emphasise the need for more detailed health assessments over time. The Global Burden of Diseases, Injuries, and Risk Factors Study 2013 (GBD 2013) provides the comprehensive, comparable framework through which such national and subnational analyses can occur...
October 5, 2016: Lancet
Kim O Kaustell, Tiina E A Mattila, Risto H Rautiainen
BACKGROUND: Commercial fishing is recognised as one of the most hazardous professions worldwide. In Finland, commercial fishing has some special characteristics, including fishing on ice during frozen waters, and pluriactivity of the fisher family to gain additional income. The goal of this study was to describe injury characteristics among commercial fishers in Finland during the years 1996-2015. With this information, we wish to promote creation of effective safety campaigns and interventions...
2016: International Maritime Health
Sydney A Sherman, Jack K Phillips, J Tighe Costa, Frances S Cho, Sevan R Oungoulian, John D Finan
Traumatic brain injury (TBI) is a major cause of mortality and morbidity with limited therapeutic options. Traumatic axonal injury (TAI) is an important component of TBI pathology. It is difficult to reproduce TAI in animal models of closed head injury, but in vitro stretch injury models reproduce clinical TAI pathology. Existing in vitro models employ primary rodent neurons or human cancer cell line cells in low throughput formats. This in vitro neuronal stretch injury model employs human induced pluripotent stem cell-derived neurons (hiPSCNs) in a 96 well format...
September 27, 2016: Scientific Reports
Grigoris Grigoriadis, Nicolas Newell, Diagarajen Carpanen, Alexandros Christou, Anthony M J Bull, Spyros D Masouros
The complex structural and material behaviour of the human heel fat pad determines the transmission of plantar loading to the lower limb across a wide range of loading scenarios; from locomotion to injurious incidents. The aim of this study was to quantify the hyper-viscoelastic material properties of the human heel fat pad across strains and strain rates. An inverse finite element (FE) optimisation algorithm was developed and used, in conjunction with quasi-static and dynamic tests performed to five cadaveric heel specimens, to derive specimen-specific and mean hyper-viscoelastic material models able to predict accurately the response of the tissue at compressive loading of strain rates up to 150s(-1)...
September 8, 2016: Journal of the Mechanical Behavior of Biomedical Materials
Timothy F Tyler, Brandon M Schmitt, Stephen J Nicholas, Malachy McHugh
CONTEXT: Hamstring strain injuries have a high recurrence rate. OBJECTIVE: To determine if a protocol emphasizing eccentric strength training with the hamstrings in a lengthened position resulted in a low recurrence rate. DESIGN: Longitudinal cohort study Setting: Sports medicine physical therapy clinic. PARTICIPANTS: 50 athletes with hamstring strain injury (age 36±16 yo; 30 men, 20 women; 3 G1, 43 G2, 4 G3; 25 recurrent injuries) followed a 3-phase rehabilitation protocol emphasizing eccentric strengthening with the hamstrings in a lengthened position...
August 24, 2016: Journal of Sport Rehabilitation
Matteo Guzzini, Daniele Mazza, Mattia Fabbri, Riccardo Lanzetti, Andrea Redler, Carlo Iorio, Edoardo Monaco, Andrea Ferretti
PURPOSE: The growing popularity of elite soccer among female participants has led to increased incidents of anterior cruciate ligament (ACL) ruptures. Many authors underline a positive glide after ACL reconstruction (ACLR), especially in women. In fact, an isolated intra-articular ACLR may be inadequate to control rotational instability after a combined injury of the ACL and the peripheral structures of the knee. Extra-articular procedures are sometimes used in primary cases displaying excessive antero-lateral rotatory instability...
October 2016: International Orthopaedics
Lyndia C Wu, Kaveh Laksari, Calvin Kuo, Jason F Luck, Svein Kleiven, Cameron R 'Dale' Bass, David B Camarillo
Wearable inertial sensors measure human head impact kinematics important to the on-going development and validation of head injury criteria. However, sensor specifications have not been scientifically justified in the context of the anticipated field impact dynamics. The objective of our study is to determine the minimum bandwidth and sample rate required to capture the impact frequency response relevant to injury. We used high-bandwidth head impact data as ground-truth measurements, and investigated the attenuation of various injury criteria at lower bandwidths...
September 6, 2016: Journal of Biomechanics
Anneli Peolsson, Gunnel Peterson, Johan Trygg, David Nilsson
Whiplash Associated Disorders (WAD) refers to the multifaceted and chronic burden that is common after a whiplash injury. Tools to assist in the diagnosis of WAD and an increased understanding of neck muscle behaviour are needed. We examined the multilayer dorsal neck muscle behaviour in nine women with chronic WAD versus healthy controls during the entire sequence of a dynamic low-loaded neck extension exercise, which was recorded using real-time ultrasound movies with high frame rates. Principal component analysis and orthogonal partial least squares were used to analyse mechanical muscle strain (deformation in elongation and shortening)...
2016: Scientific Reports
Y Xi, D J Hu, W W Yao, M Li
OBJECTIVE: To accelerate the detection rate and accuracy of diagnosis in damage imaging of Lisfranc joint through research on the information of X-ray, CT, and MR imaging of tarsometatarsus joint (also called Lisfranc joint) damage. METHODS: A total of 153 cases of tarsometratisus damage or Lisfranc ligamentous injury patients were chosen during November 2012 to November 2015. Lisfranc injuries were classified according to the Myerson fracture displacements classification and Nunley-Vertullo low-grade injury classification...
July 5, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
Janne P Karttunen, Risto H Rautiainen, Christina Lunner-Kolstrup
INTRODUCTION: Conventional pipeline and parlor milking expose dairy farmers and workers to adverse health outcomes. In recent years, automatic milking systems (AMS) have gained much popularity in Finland, but the changes in working conditions when changing to AMS are not well known. The aim of this study was to investigate the occupational health and safety risks in using AMS, compared to conventional milking systems (CMS). METHODS: An anonymous online survey was sent to each Finnish dairy farm with an AMS in 2014...
2016: Frontiers in Public Health
Stanislav Obruca, Petr Sedlacek, Vladislav Krzyzanek, Filip Mravec, Kamila Hrubanova, Ota Samek, Dan Kucera, Pavla Benesova, Ivana Marova
Accumulation of polyhydroxybutyrate (PHB) seems to be a common metabolic strategy adopted by many bacteria to cope with cold environments. This work aimed at evaluating and understanding the cryoprotective effect of PHB. At first a monomer of PHB, 3-hydroxybutyrate, was identified as a potent cryoprotectant capable of protecting model enzyme (lipase), yeast (Saccharomyces cerevisiae) and bacterial cells (Cupriavidus necator) against the adverse effects of freezing-thawing cycles. Further, the viability of the frozen-thawed PHB accumulating strain of C...
2016: PloS One
Osama Elattar, Ho-Rim Choi, Vickie D Dills, Brian Busconi
CONTEXT: Groin pain is a common entity in athletes involved in sports that require acute cutting, pivoting, or kicking such as soccer and ice hockey. Athletic pubalgia is increasingly recognized as a common cause of chronic groin and adductor pain in athletes. It is considered an overuse injury predisposing to disruption of the rectus tendon insertion to the pubis and weakness of the posterior inguinal wall without a clinically detectable hernia. These patients often require surgical therapy after failure of nonoperative measures...
July 2016: Sports Health
Oluwatoyin Bamgbola
In recent times the use of larger doses of vancomycin aimed at curbing the increasing incidence of resistant strains of Staphylococcus aureus has led to a wider report of acute kidney injury (AKI). Apart from biological plausibility, causality is implied by the predictive association of AKI with larger doses, longer duration, and graded plasma concentrations of vancomycin. AKI is more likely to occur with the concurrent use of nephrotoxic agents, and in critically ill patients who are susceptible to poor renal perfusion...
June 2016: Therapeutic Advances in Endocrinology and Metabolism
Zhou Zhou, Binhui Jiang, Libo Cao, Feng Zhu, Haojie Mao, King H Yang
BACKGROUND AND OBJECTIVE: Studies on traumatic injuries of children indicate that impact to the head is a major cause of severe injury and high mortality. However, regulatory and ethical concerns very much limit development and validation of computer models representing the pediatric head. The purpose of this study was to develop a child head finite element model with high-biofidelity to be used for studying pediatric head injury mechanisms. METHODS: A newly developed 10-year-old (YO) pediatric finite element head model was limitedly validated for kinematic and kinetic responses against data from quasi-static compressions and drop tests obtained from an experimental study involving a child-cadaver specimen...
July 2016: Computer Methods and Programs in Biomedicine
Jill Tirabassi, Lina Brou, Morteza Khodaee, Roxanna Lefort, Sarah K Fields, R Dawn Comstock
BACKGROUND: Although rare, season- or career-ending injuries in young athletes are concerning because they can result in time lost from sport participation and school, social costs, and economic costs of medical care. PURPOSE: To describe rates and patterns of medically disqualifying (MDQ) injuries among United States high school athletes overall and by sport, sex, type of athletic activity, and mechanism. STUDY DESIGN: Descriptive epidemiological study...
May 10, 2016: American Journal of Sports Medicine
Li Fang, Fan Wang, Kedai Sun, Tao Zhou, Yali Gong, Yizhi Peng
OBJECTIVE: To investigate the prevalence of central venous catheter-related infection (CRI) in burn patients and its risk factors, so as to guide the clinical practice. METHODS: Clinical data of 5 026 days of 480 cases of central venous catheterization altogether in 228 burn patients admitted to our ward from June 2011 to December 2014, conforming to the study criteria, were retrospectively analyzed. (1) The incidence of CRI and that of catheter-related bloodstream infection (CRBSI) in patients (the infection rates per thousand days were calculated) and mortality due to them, and detection of concerning bacteria were recorded after each case of catheterization...
April 2016: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
Bahareh Eslami, Eija Viitasara, Gloria Macassa, Maria Gabriella Melchiorre, Jutta Lindert, Mindaugas Stankunas, Francisco Torres-Gonzalez, Henrique Barros, Elisabeth Ioannidi-Kapolou, Joaquim J F Soares
OBJECTIVES: To investigate the lifetime prevalence rate of abuse among older persons and to scrutinize the associated factors (e.g. demographics). METHODS: This cross-sectional population-based study had 4467 participants, aged 60-84, from seven European cities. Abuse (psychological, physical, sexual, financial and injuries) was measured based on The Revised Conflict Tactics Scale, and the UK survey of abuse/neglect of older people. RESULTS: Over 34 % of participants reported experiencing lifetime psychological, 11...
April 15, 2016: International Journal of Public Health
Piyush Gaur, Anoop Chawla, Khyati Verma, Sudipto Mukherjee, Sanjeev Lalvani, Rajesh Malhotra, Christian Mayer
Motor vehicle crashes (MVC׳s) commonly results in life threating thoracic and abdominal injuries. Finite element models are becoming an important tool in analyzing automotive related injuries to soft tissues. Establishment of accurate material models including tissue tolerance limits is critical for accurate injury evaluation. The diaphragm is the most important skeletal muscle for respiration having a bi-domed structure, separating the thoracic cavity from abdominal cavity. Traumatic rupture of the diaphragm is a potentially serious injury which presents in different forms depending upon the mechanisms of the causative trauma...
July 2016: Journal of the Mechanical Behavior of Biomedical Materials
Andreas Güldner, Anja Braune, Lorenzo Ball, Pedro L Silva, Cynthia Samary, Angelo Insorsi, Robert Huhle, Ines Rentzsch, Claudia Becker, Liane Oehme, Michael Andreeff, Marcos F Vidal Melo, Tilo Winkler, Paolo Pelosi, Patricia R M Rocco, Jörg Kotzerke, Marcelo Gama de Abreu
OBJECTIVE: Volutrauma and atelectrauma promote ventilator-induced lung injury, but their relative contribution to inflammation in ventilator-induced lung injury is not well established. The aim of this study was to determine the impact of volutrauma and atelectrauma on the distribution of lung inflammation in experimental acute respiratory distress syndrome. DESIGN: Laboratory investigation. SETTING: University-hospital research facility. SUBJECTS: Ten pigs (five per group; 34...
September 2016: Critical Care Medicine
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