subject:(Injury mechanisms)

University of Michigan

1. Oh, You Keun. On the Mechanisms of Non-contact ACL Injury During a Simulated Jump Landing: Experimental and Theoretical Analyses.

Degree: PhD, Mechanical Engineering, 2011, University of Michigan

URL: http://hdl.handle.net/2027.42/86418

► Of the 350,000 ACL reconstructions performed annually in the U.S., 70% are due to “non-contact” injuries often due to pivot landing maneuvers. Because an ACL… (more)

▼ Of the 350,000 ACL reconstructions performed annually in the U.S., 70% are due to “non-contact” injuries often due to pivot landing maneuvers. Because an ACL injury predisposes the individual to early onset knee osteoarthritis, mechanistic insights are needed into why these injuries occur so they can be better prevented in the future. A knowledge gap concerns the relative contributions of dynamic internal tibial torque and valgus moment in causing ACL strain under the large impulsive ground reactions and muscle forces typically experienced in vivo. The goal of this dissertation, therefore, was to investigate the effect of impulsive axial tibial torque, with and without frontal plane moment, on ACL strain during a realistic jump landing scenario. Human cadaveric knees were loaded with realistic muscle forces in a simulated pivot landing test scenario. Impulsive compression, flexion moment, internal or external tibial torque, and ab- or adduction moments were simultaneously applied to the knee while recording the 3-D knee loads, muscle forces, tibiofemoral kinematics, and anteromedial ACL relative strain. In addition, a dynamic 3-D biomechanical model of the knee was developed to further explore ACL injury mechanisms. The results show that internal tibial torque, rather than a knee abduction moment, causes the largest ACL strains during a jump landing. Furthermore, an internal tibial torque induces a 70% larger ACL strain than a similar magnitude of external tibial torque. The presence of either a knee ab- or adduction moment did not significantly alter these results. An insight provided by the knee model is that when the lateral tibial slope exceeds that of the medial tibial plateau, then an abduction moment augments coupled internal tibial rotation, thereby increasing ACL strain, even without medial knee joint opening. Finally, the model simulation found that a steeper lateral tibial slope compared to a medial tibial slope, a more valgus limb alignment, and a shallower medial tibial concavity all increase the ACL strain during a simulated landing. Advisors/Committee Members: Ashton-Miller, James A. (committee member), Wojtys, Edward M. (committee member), McLean, Scott G. (committee member), Perkins, Noel C. (committee member).

Subjects/Keywords: Non-Contact ACL Injury Mechanisms; Mechanical Engineering; Engineering

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Oh, Y. K. (2011). On the Mechanisms of Non-contact ACL Injury During a Simulated Jump Landing: Experimental and Theoretical Analyses. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/86418

Chicago Manual of Style (16^th Edition):

Oh, You Keun. “On the Mechanisms of Non-contact ACL Injury During a Simulated Jump Landing: Experimental and Theoretical Analyses.” 2011. Doctoral Dissertation, University of Michigan. Accessed April 13, 2021. http://hdl.handle.net/2027.42/86418.

MLA Handbook (7^th Edition):

Oh, You Keun. “On the Mechanisms of Non-contact ACL Injury During a Simulated Jump Landing: Experimental and Theoretical Analyses.” 2011. Web. 13 Apr 2021.

Vancouver:

Oh YK. On the Mechanisms of Non-contact ACL Injury During a Simulated Jump Landing: Experimental and Theoretical Analyses. [Internet] [Doctoral dissertation]. University of Michigan; 2011. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/2027.42/86418.

Council of Science Editors:

Oh YK. On the Mechanisms of Non-contact ACL Injury During a Simulated Jump Landing: Experimental and Theoretical Analyses. [Doctoral Dissertation]. University of Michigan; 2011. Available from: http://hdl.handle.net/2027.42/86418

University of Toledo

2. Kiapour, Ata. Non-Contact ACL Injuries during Landing: Risk Factors and Mechanisms.

Degree: PhD, Biomedical Engineering, 2013, University of Toledo

URL: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1368186846

► The anterior cruciate ligament (ACL) is one of the most common sites of the injury in the knee joint. Over 120,000 ACL injuries occur annually… (more)

▼ The anterior cruciate ligament (ACL) is one of the most common sites of the injury in the knee joint. Over 120,000 ACL injuries occur annually in the United States, mainly affecting the young athletic population with females at a reported 2-8 fold greater risk than males. Non-contact injuries constitute the predominant mechanism of ACL injury (in over 70% of ACL injuries) occur mainly during landing following a jump and lateral cutting maneuvers. Due to long term disabilities associated with ACL injury (i.e. joint instability, pain and early development of osteoarthritis), potential loss of sports participation and high costs associated with surgical reconstruction, prevention is an appealing option to avoid the complications associated with ACL injury. While many advances have been made in terms of surgical and rehabilitation interventions, patients who have suffered ACL injury face long-term consequences that include lowered activity levels, 10-25 % incidence of re-injury 5 years after return to sport and 50-100 % incidence of osteoarthritis within 10-15 years of injury, regardless of the treatment. Despite the substantial effort conducted on investigation of the non-contact ACL injuries, the mechanism of these injuries is not well understood. Many proposed risk factors can be categorized as anatomic, neuromuscular or biomechanical. However, just biomechanical and neuromuscular risk factors can be defined as modifiable factors, which can be modified through targeted intervention strategies in an effort to reduce the risk of injury. Identification of modifiable risk factors for ACL injury represents a major step in the reduction of the incidence of injury. A better understanding of the mechanisms underlying non-contact ACL injuries and associated risk factors, might serve to improve current prevention strategies and decrease the risk of early-onset knee osteoarthritis. This proposal aims to employ a unique combination of established <i>ex vivo</i> and <i>in silico</i> methods in order to gain an in depth understanding of knee joint biomechanics during dynamic landing (as an identified high-risk task) with a specific focus on ACL injury. The objectives of this dissertation were to investigate the non-contact ACL injury during landing in an effort to identify the potential biomechanical and neuromuscular risk factors and determine the mechanisms that lead to these injuries. Cadaveric experiments were conducted on 20 normal, relatively young instrumented lower extremities. Following knee arthrometry, specimens were tested under a wide range of quasi-static single- and multi-axial loading conditions in order to quantify the global the biomechanical response of the tibiofemoral joint with regards to joint kinematics, ACL and MCL strains, and intra-articular cartilage pressure distribution. Subsequently, multiple bi-pedal and uni-pedal landing scenarios were simulated using a custom designed novel drop-stand. An extensive physiologic loading protocol was designed based on the identified high-risk loading factors from… Advisors/Committee Members: Goel, Vijay (Committee Chair).

Subjects/Keywords: Sports Medicine; Biomedical Engineering; Biomechanics; ACL; Non-Contact Injury; Landing; Biomechanical; Neuromuscular; Risk Factors; Mechanisms

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kiapour, A. (2013). Non-Contact ACL Injuries during Landing: Risk Factors and Mechanisms. (Doctoral Dissertation). University of Toledo. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=toledo1368186846

Chicago Manual of Style (16^th Edition):

Kiapour, Ata. “Non-Contact ACL Injuries during Landing: Risk Factors and Mechanisms.” 2013. Doctoral Dissertation, University of Toledo. Accessed April 13, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1368186846.

MLA Handbook (7^th Edition):

Kiapour, Ata. “Non-Contact ACL Injuries during Landing: Risk Factors and Mechanisms.” 2013. Web. 13 Apr 2021.

Vancouver:

Kiapour A. Non-Contact ACL Injuries during Landing: Risk Factors and Mechanisms. [Internet] [Doctoral dissertation]. University of Toledo; 2013. [cited 2021 Apr 13]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1368186846.

Council of Science Editors:

Kiapour A. Non-Contact ACL Injuries during Landing: Risk Factors and Mechanisms. [Doctoral Dissertation]. University of Toledo; 2013. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1368186846

University of Michigan

3. Bey, Michael John. Injury mechanisms of the shoulder: Quantitative analysis of tendons and ligaments.

Degree: PhD, Biomedical engineering, 2001, University of Michigan

URL: http://hdl.handle.net/2027.42/124801

► The shoulder is one of the most frequently injured joints in the human musculoskeletal system, yet the etiology of shoulder injuries is not always well… (more)

▼ The shoulder is one of the most frequently injured joints in the human musculoskeletal system, yet the etiology of shoulder injuries is not always well understood. This thesis is a compilation of studies that investigate specific mechanisms of injury associated with pathologic conditions of the shoulder. For each study, our approach was to quantify joint and tissue mechanics in a cadaveric shoulder model to lend insight into a particular mechanism of injury. Chapter 2 describes an investigation into the effect of inferior humeral subluxation on the creation of SLAP lesion injuries, and this study demonstrated that inferior subluxation of the humeral head significantly facilitates the generation of type II SLAP lesions. Chapter 3 is a fundamental investigation of the glenohumeral and coracohumeral ligaments' role on resisting external humeral rotation. This study demonstrated that the coracohumeral and inferior glenohumeral ligaments serve as the primary restraints to external rotation in the late-cocking position of the overhand throwing motion. Chapter 4 describes the validation of a novel, MRI-based technique for quantifying intratissue strains, a technique representing a significant advancement over conventional strain-measuring techniques. This approach demonstrated a displacement accuracy of 41 mum and a strain accuracy of within +/-0.6% for strains believed to be within the physiologic range. Chapter 5 describes application of the MRI-based strain measurement technique to quantifying intratendinous strains of the intact rotator cuff. This particular study suggests that the inferior region aspect of the supraspinatus tendon may be susceptible to damage during overhead activities. Chapter 6 extends the cadaveric model developed in Chapter 5 by investigating the effect of a simulated partial-thickness, articular-surface rotator cuff tears. This investigation demonstrated that a partial-thickness tear had a significant effect on rotator cuff tendon strain at nearly all glenohumeral joint positions. Chapter 7 summarizes the findings from Chapter 2 – 6 and suggests additional areas of study. Taken together, these chapters provide scientific and clinically relevant information which should improve our understanding of particular mechanisms of soft tissue injuries about the glenhumeral joint. In addition, these studies will stimulate new research hypotheses to further advance the scientific basis for clinical practice. Advisors/Committee Members: Soslowsky, Louis J. (advisor), Goldstein, Steven A. (advisor).

Subjects/Keywords: Analysis; Injury; Ligaments; Mechanisms; Quantitative; Rotator Cuff; Shoulder; Tendons

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bey, M. J. (2001). Injury mechanisms of the shoulder: Quantitative analysis of tendons and ligaments. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/124801

Chicago Manual of Style (16^th Edition):

Bey, Michael John. “Injury mechanisms of the shoulder: Quantitative analysis of tendons and ligaments.” 2001. Doctoral Dissertation, University of Michigan. Accessed April 13, 2021. http://hdl.handle.net/2027.42/124801.

MLA Handbook (7^th Edition):

Bey, Michael John. “Injury mechanisms of the shoulder: Quantitative analysis of tendons and ligaments.” 2001. Web. 13 Apr 2021.

Vancouver:

Bey MJ. Injury mechanisms of the shoulder: Quantitative analysis of tendons and ligaments. [Internet] [Doctoral dissertation]. University of Michigan; 2001. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/2027.42/124801.

Council of Science Editors:

Bey MJ. Injury mechanisms of the shoulder: Quantitative analysis of tendons and ligaments. [Doctoral Dissertation]. University of Michigan; 2001. Available from: http://hdl.handle.net/2027.42/124801

4. TAY SZE YAN. Understanding the underlying cognitive mechanisms of prospective memory in mild traumatic head injury.

Degree: 2009, National University of Singapore

URL: http://scholarbank.nus.edu.sg/handle/10635/15892

Subjects/Keywords: prospective memory; mild traumatic brain injury; cognitive mechanisms

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

YAN, T. S. (2009). Understanding the underlying cognitive mechanisms of prospective memory in mild traumatic head injury. (Thesis). National University of Singapore. Retrieved from http://scholarbank.nus.edu.sg/handle/10635/15892

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

YAN, TAY SZE. “Understanding the underlying cognitive mechanisms of prospective memory in mild traumatic head injury.” 2009. Thesis, National University of Singapore. Accessed April 13, 2021. http://scholarbank.nus.edu.sg/handle/10635/15892.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

YAN, TAY SZE. “Understanding the underlying cognitive mechanisms of prospective memory in mild traumatic head injury.” 2009. Web. 13 Apr 2021.

Vancouver:

YAN TS. Understanding the underlying cognitive mechanisms of prospective memory in mild traumatic head injury. [Internet] [Thesis]. National University of Singapore; 2009. [cited 2021 Apr 13]. Available from: http://scholarbank.nus.edu.sg/handle/10635/15892.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

YAN TS. Understanding the underlying cognitive mechanisms of prospective memory in mild traumatic head injury. [Thesis]. National University of Singapore; 2009. Available from: http://scholarbank.nus.edu.sg/handle/10635/15892

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Pretoria

5. [No author]. Lower limb injuries in teenage girls playing soccer .

Degree: 2007, University of Pretoria

URL: http://upetd.up.ac.za/thesis/available/etd-07312007-140938/

► Introduction: The number of girls and women participating in all levels of soccer has risen greatly in recent years. Rationale for the study: The injury… (more)

Subjects/Keywords: Lower limb injuries; Injury mechanisms; Teenage soccer; Sports injuries; UCTD

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

author], [. (2007). Lower limb injuries in teenage girls playing soccer . (Masters Thesis). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-07312007-140938/

Chicago Manual of Style (16^th Edition):

author], [No. “Lower limb injuries in teenage girls playing soccer .” 2007. Masters Thesis, University of Pretoria. Accessed April 13, 2021. http://upetd.up.ac.za/thesis/available/etd-07312007-140938/.

MLA Handbook (7^th Edition):

author], [No. “Lower limb injuries in teenage girls playing soccer .” 2007. Web. 13 Apr 2021.

Vancouver:

author] [. Lower limb injuries in teenage girls playing soccer . [Internet] [Masters thesis]. University of Pretoria; 2007. [cited 2021 Apr 13]. Available from: http://upetd.up.ac.za/thesis/available/etd-07312007-140938/.

Council of Science Editors:

author] [. Lower limb injuries in teenage girls playing soccer . [Masters Thesis]. University of Pretoria; 2007. Available from: http://upetd.up.ac.za/thesis/available/etd-07312007-140938/

University of Pretoria

6. Mahlangu, Lindiwe L. Lower limb injuries in teenage girls playing soccer.

Degree: MPhyst, Physiotherapy, 2007, University of Pretoria

URL: http://hdl.handle.net/2263/26883

► Introduction: The number of girls and women participating in all levels of soccer has risen greatly in recent years. Rationale for the study: The injury… (more)

Subjects/Keywords: Lower limb injuries; Injury mechanisms; Teenage soccer; Sports injuries; UCTD

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mahlangu, L. L. (2007). Lower limb injuries in teenage girls playing soccer. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/26883

Chicago Manual of Style (16^th Edition):

Mahlangu, Lindiwe L. “Lower limb injuries in teenage girls playing soccer.” 2007. Masters Thesis, University of Pretoria. Accessed April 13, 2021. http://hdl.handle.net/2263/26883.

MLA Handbook (7^th Edition):

Mahlangu, Lindiwe L. “Lower limb injuries in teenage girls playing soccer.” 2007. Web. 13 Apr 2021.

Vancouver:

Mahlangu LL. Lower limb injuries in teenage girls playing soccer. [Internet] [Masters thesis]. University of Pretoria; 2007. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/2263/26883.

Council of Science Editors:

Mahlangu LL. Lower limb injuries in teenage girls playing soccer. [Masters Thesis]. University of Pretoria; 2007. Available from: http://hdl.handle.net/2263/26883

7. Nadarasa, Jeyendran. Modélisation par éléments-finis des traumatismes crâniens du nourrisson : Finite-element modelling of infant head injuries.

Degree: Docteur es, Biomécanique, 2018, Université de Strasbourg

URL: http://www.theses.fr/2018STRAD003

►

La biomécanique des chocs vise à étudier les lésions, établir des limites de tolérance et de proposer des mesures de protections adéquates. La méthode des… (more)

▼

La biomécanique des chocs vise à étudier les lésions, établir des limites de tolérance et de proposer des mesures de protections adéquates. La méthode des éléments-finis permet l’étude approfondie des mécanismes de lésions, évitant des problèmes liés à l’expérimentation et d’éthique. La biomécanique de la tête humaine chez l’adulte a pris ce virage très tôt, et des modèles de la tête de l’adulte existent, dont celui développé à l’Université de Strasbourg : le SUFEHM (Strasbourg University Finite Element Head Model). Le présent projet a pour but d’ouvrir cette thématique à la modélisation des traumatismes crâniens du nourrisson. Deux axes de travail ont été conduits successivement pour étudier des situations d’accidents et de maltraitances. Le premier axe consiste à développer un modèle de l’œil du nourrisson pour l’étude des hémorragies rétiniennes. Le deuxième consiste à améliorer le modèle de tête en intégrant d’une part les données de l’imagerie médicale comme l’orientation et la densité des fibres axonales, et d’autre part en validant la formulation du crâne pour prédire les fractures crâniennes.

Impact biomechanics aim at studying injuries, establishing tolerance limit and propose efficient protective systems. The finite-element method permits to study precisely injury mechanisms by avoiding questions linked to experimentation and ethics. For the human adult head biomechanics, this methodology was taken earlier and several stable and validated models exist worldwide, among which one can find the Strasbourg University Finite Element Head Model (SUFEHM). This thesis aims at widening the human head biomechanics by studying infant head trauma. The research work has been conducted in two steps. In the first one, an infant eye numerical model was developed in order to study retinal hemorrhages. The second one consisted in improving the infant head model by integrating medical images data such as axonal fiber density and orientations into the infant brain and by validating the mechanical formulation of the infant skull in order to predict skull fractures.

Advisors/Committee Members: Willinger, Rémy (thesis director), Raul, Jean-Sébastien (thesis director).

Subjects/Keywords: Biomécanique de la tête; Éléments-finis; Traumatismes craniens; Syndrome du bébé secoué; Hémorragie cérébrale; Fracture crânienne; Impact biomechanics; Finite-element method; Injury mechanisms; Infant head trauma; Skull fractures; 571.43

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Nadarasa, J. (2018). Modélisation par éléments-finis des traumatismes crâniens du nourrisson : Finite-element modelling of infant head injuries. (Doctoral Dissertation). Université de Strasbourg. Retrieved from http://www.theses.fr/2018STRAD003

Chicago Manual of Style (16^th Edition):

Nadarasa, Jeyendran. “Modélisation par éléments-finis des traumatismes crâniens du nourrisson : Finite-element modelling of infant head injuries.” 2018. Doctoral Dissertation, Université de Strasbourg. Accessed April 13, 2021. http://www.theses.fr/2018STRAD003.

MLA Handbook (7^th Edition):

Nadarasa, Jeyendran. “Modélisation par éléments-finis des traumatismes crâniens du nourrisson : Finite-element modelling of infant head injuries.” 2018. Web. 13 Apr 2021.

Vancouver:

Nadarasa J. Modélisation par éléments-finis des traumatismes crâniens du nourrisson : Finite-element modelling of infant head injuries. [Internet] [Doctoral dissertation]. Université de Strasbourg; 2018. [cited 2021 Apr 13]. Available from: http://www.theses.fr/2018STRAD003.

Council of Science Editors:

Nadarasa J. Modélisation par éléments-finis des traumatismes crâniens du nourrisson : Finite-element modelling of infant head injuries. [Doctoral Dissertation]. Université de Strasbourg; 2018. Available from: http://www.theses.fr/2018STRAD003

University of Michigan

8. Lockhart, Nicole C. Mechanisms underlying the protection from contraction -induced skeletal muscle injury provided by exercising with passive stretches.

Degree: PhD, Physical therapy, 2006, University of Michigan

URL: http://hdl.handle.net/2027.42/125698

► Contraction-induced injury can occur during everyday activities when muscles are stretched while activated (lengthening contractions). Administration of passive stretches during which the muscle is lengthened… (more)

▼ Contraction-induced injury can occur during everyday activities when muscles are stretched while activated (lengthening contractions). Administration of passive stretches during which the muscle is lengthened without activation reduces the severity of injury following subsequent lengthening contractions. Contraction-induced injury is initiated by mechanical damage followed by an inflammatory response leading to a secondary injury and the degeneration of damaged muscle fibers. Conditioning with passive stretches may protect against injury by decreasing the initial mechanical damage, the secondary injury, or both. This thesis investigated potential mechanisms underlying protective adaptations induced by passive-stretch-conditioning in mice. Understanding these mechanisms is important for designing safe effective conditioning programs to reduce injury, particularly for populations susceptible to contraction-induced injury like the elderly. The best measure of the magnitude of initial mechanical damage is the deficit in force either immediately following a protocol of lengthening contractions that did not fatigue the muscle or immediately following recovery from fatigue. Shortly after lengthening contractions, the force deficits in the absence of fatigue were not different for conditioned and unconditioned muscles, supporting the conclusion that passive-stretch-conditioning does not reduce initial mechanical damage. The magnitude of the secondary injury was determined by measuring force deficits, numbers of fibers that showed morphological evidence of injury, and infiltration of muscles by inflammatory cells three days after lengthening contractions. Inhibiting nitric oxide production during passive-stretch-conditioning prevented the reduction in force deficit, number of injured fibers, and inflammation typically observed following lengthening contractions for conditioned muscles. Thus, nitric oxide produced during passive stretches appeared to have anti-inflammatory effects during subsequent lengthening contractions. Moreover, increased levels of substrate for nitric oxide production were sufficient to decrease lengthening contraction-induced force deficits, damage to fibers and inflammation, even in the absence of prior passive stretches. Passive stretches alone resulted in neutrophil infiltration of the muscle and prevention of this low level inflammatory response eliminated the protective effects of passive stretches. We conclude that passive-stretch-conditioning reduces injury following subsequent lengthening contractions not by decreasing initial mechanical damage, but through a reduction in the secondary injury, specifically by blunting inflammation. Advisors/Committee Members: Herzog, Susan Brooks (advisor).

Subjects/Keywords: Contraction-induced; Exercising; Mechanisms; Muscle Injury; Passive Stretches; Protection; Provided; Skeletal Muscle; Underlying

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lockhart, N. C. (2006). Mechanisms underlying the protection from contraction -induced skeletal muscle injury provided by exercising with passive stretches. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/125698

Chicago Manual of Style (16^th Edition):

Lockhart, Nicole C. “Mechanisms underlying the protection from contraction -induced skeletal muscle injury provided by exercising with passive stretches.” 2006. Doctoral Dissertation, University of Michigan. Accessed April 13, 2021. http://hdl.handle.net/2027.42/125698.

MLA Handbook (7^th Edition):

Lockhart, Nicole C. “Mechanisms underlying the protection from contraction -induced skeletal muscle injury provided by exercising with passive stretches.” 2006. Web. 13 Apr 2021.

Vancouver:

Lockhart NC. Mechanisms underlying the protection from contraction -induced skeletal muscle injury provided by exercising with passive stretches. [Internet] [Doctoral dissertation]. University of Michigan; 2006. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/2027.42/125698.

Council of Science Editors:

Lockhart NC. Mechanisms underlying the protection from contraction -induced skeletal muscle injury provided by exercising with passive stretches. [Doctoral Dissertation]. University of Michigan; 2006. Available from: http://hdl.handle.net/2027.42/125698

University of Florida

9. Spiess, Martina R. Presence, Assessment and Plasticity of Descending Pathways after Spinal Cord Injury.

Degree: PhD, Rehabilitation Science, 2012, University of Florida

URL: https://ufdc.ufl.edu/UFE0045037

► Spinal cord injury (SCI) results in diminished voluntarymuscle control and consequent walking deficits. This research focuses on theplasticity of the descending motor pathways in response… (more)

▼ Spinal cord injury (SCI) results in diminished voluntarymuscle control and consequent walking deficits. This research focuses on theplasticity of the descending motor pathways in response to iSCI and training.The goals were to: 1) describe and assess the presence of spared or recoveredneural connections and 2) modify existing locomotor training approaches inorder to enhance the supraspinal center involvement. We first describe the functional abilities of individualswith Brown-Séquard Syndrome (BSS). Human neurologic deficits after BSS arecomparable to the hemisection model prevalently used in SCI animal research.Our research showed that individuals with BSS, when classified according tothree recently used definitions, are not a homogeneous group, but differsubstantially in their functional abilities. A consensus in definitions wouldimprove the use of this model and the comparability to the animal literature. Secondly, we examined the function of a motor tract. TheReticulospinal Tract (ReST) relays information to the spinal cord that isimportant, especially for initiation of walking. The neurophysiological testused to examine the functional integrity of this tract, the acoustic startleresponse (ASR), has not been well described in persons with SCI. Specifically,habituation of the response and means to avoid or delay this habituation arepoorly understood. Our research shows that more stable responses could beelicited in individuals standing on compliant ground rather than lying supine.Also, in healthy control participants, when tested a second time after 48hrs,responses are reduced when compared to the first data collection. Finally, the ASR and other neurophysiological and clinical testswere used to show that neural plasticity between centers above and below thespinal lesion can be induced by 6 weeks of locomotor training. No differencebetween 3 weeks of basic locomotor training and 3 weeks of adaptive trainingcould be detected in our sample of 3 participants. This case series providesimportant data to adequately plan a larger study investigating the differentialeffects of basic locomotor training and specific adaptability training designedto induce plasticity in the spinal connections below and above the lesion. ( en ) Advisors/Committee Members: Behrman, Andrea L (committee chair), Shechtman, Orit (committee member), Howland, Dena R (committee member).

Subjects/Keywords: Boxes; Gait; Habituation; Health care outcome assessment; Locomotion; Motor ability; Physical trauma; Reflexes; Spinal cord; Walking; acoustic – adaptability – brown – cord – injury – locomotion – mechanisms – neurophysiology – neuroplasticity – recovery – sequard – spinal – startle

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Spiess, M. R. (2012). Presence, Assessment and Plasticity of Descending Pathways after Spinal Cord Injury. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0045037

Chicago Manual of Style (16^th Edition):

Spiess, Martina R. “Presence, Assessment and Plasticity of Descending Pathways after Spinal Cord Injury.” 2012. Doctoral Dissertation, University of Florida. Accessed April 13, 2021. https://ufdc.ufl.edu/UFE0045037.

MLA Handbook (7^th Edition):

Spiess, Martina R. “Presence, Assessment and Plasticity of Descending Pathways after Spinal Cord Injury.” 2012. Web. 13 Apr 2021.

Vancouver:

Spiess MR. Presence, Assessment and Plasticity of Descending Pathways after Spinal Cord Injury. [Internet] [Doctoral dissertation]. University of Florida; 2012. [cited 2021 Apr 13]. Available from: https://ufdc.ufl.edu/UFE0045037.

Council of Science Editors:

Spiess MR. Presence, Assessment and Plasticity of Descending Pathways after Spinal Cord Injury. [Doctoral Dissertation]. University of Florida; 2012. Available from: https://ufdc.ufl.edu/UFE0045037

Tampere University

10. Palvanen, Mika. Upper body fractures in older adults - epidemiology and injury mechanisms .

Degree: Lääketieteen laitos - Medical School, 2001, Tampere University

URL: https://trepo.tuni.fi/handle/10024/67104

► Osteoporoosi, eli luun rakenteen heikkeneminen, ja ikäihmisten osteoporoottiset murtumat ovat maailmanlaajuisesti lisääntyvä kansanterveydellinen ja -taloudellinen ongelma. Osteoporoottisina pidetään murtumia, jotka tulevat ikäihmisille varsin lievältä tuntuvan… (more)

▼ Osteoporoosi, eli luun rakenteen heikkeneminen, ja ikäihmisten osteoporoottiset murtumat ovat maailmanlaajuisesti lisääntyvä kansanterveydellinen ja -taloudellinen ongelma. Osteoporoottisina pidetään murtumia, jotka tulevat ikäihmisille varsin lievältä tuntuvan vamman seurauksena, esim. kaatuminen tai putoaminen seisomiskorkeudelta tai sitä matalammalta. Vammojen esiintymistutkimukset ovat aiemmin keskittyneet pääasiassa ranne-, ranka- ja lonkkamurtumiin, kun taas olka- ja kyynärseudun sekä kylkiluun murtumista on ollut hyvin vähän pitkän aikavälin seurantatietoja. Jotta murtumia voitaisiin ehkäistä mahdollisimman tehokkaasti, on tärkeätä tuntea murtuman syntyyn johtaneet taustatekijät, tilannetiedot ja erityisesti välittömät vammamekanismit. Tämän väitöskirjatyön tarkoituksena oli (1) selvittää ikäihmisten osteoporoottisten olkaluun yläosan, olkaluun alaosan ja kylkiluun murtumien määrä sekä kaatumisen aiheuttamien vakavien kallovammojen määrä Suomessa vv. 1970-1995, (2) tutkia perimän osuutta murtumien syntyyn ja (3) selvittää olkaluun yläosan, kyynärseudun ja rannemurtumien vammamekanismit ikäihmisillä. Murtumatiedot kerättiin valtakunnallisesta sairaaloiden hoitoilmoitusrekisteristä (HILMO). Sairaalassa hoidettujen olkaluun yläosan murtumien määrä 60-vuotiailla ja sitä vanhemmilla ikäihmisillä nelinkertaistui vuodesta 1970 (212) vuoteen 1993 (844). Vastaavasti kylkiluun murtumien määrä kaksinkertaistui vuodesta 1970 (270) vuoteen 1994 (576) ja naisten olkaluun alaosan murtumien määrä nelinkertaistui vuodesta 1970 (42) vuoteen 1995 (175). Samalla aikavälillä kaatumisen aiheuttamien vakavien kallovammojen määrä yli kaksinkertaistui ja myös niiden ikävakioitu esiintymistaajuus lisääntyi voimakkaasti. Viimeksi mainittu kuvastaa kaatumisten määrän ja/tai vakavuuden lisääntymistä maassamme, koska kallovammojen synnyssä osteoporoosin merkitys on vähäinen. Perimän osuutta murtumien synnyssä tutkittiin vertailemalla yli 50-vuotiaiden identtisten ja ei-identtisten kaksosten murtumia vv. 1972-1996. Tutkimus osoitti, että ikäihmisten osteoporoottisten murtumien riskin vaihtelusta perimä selittää keskimäärin vain pienen osan (alle 15%), erityisesti naisilla. Yläraajamurtumien vammamekanismitutkimuksessa haastateltiin ja tutkittiin 287 yläraajamurtumapotilasta ja 108 satunnaisesti valittua kontrollipotilasta viikon sisällä tapaturmasta. Yläraajamurtumilla (olka-, kyynär- ja rannemurtuma) näyttää kullakin olevan tyypilliset vammamekanisminsa. Ne syntyvät yleisimmin kaaduttaessa etuviistoon ja siten että kaatumisessa syntyvä iskuvoima kohdistuu suoraan murtumakohtaan. Kaatumista ei ehditä hidastaa esim. kädellä vastaanottamalla, poikkeuksena rannemurtumat, joissa noin puolet murtumapotilaista oli ottanut kädellä vastaan. Tämä väitöskirjatutkimus osoittaa ensimmäistä kertaa, että ikäihmisten ylävartalon murtumat ovat lisääntyneet maassamme huolestuttavasti viimeisten vuosikymmenien aikana. Suurin osa murtumista syntyy kaatumisen seurauksena siten, että iskuenergia kohdistuu suoraan murtumakohtaan. Luun kunnosta huolehtimisen…

Subjects/Keywords: epidemiologia ; kaatumiset ; osteoporoosi ; vammamekanismit ; yläraajamurtumat ; elderly ; epidemiology ; falls ; injury mechanisms ; upper body fractures

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Palvanen, M. (2001). Upper body fractures in older adults - epidemiology and injury mechanisms . (Doctoral Dissertation). Tampere University. Retrieved from https://trepo.tuni.fi/handle/10024/67104

Chicago Manual of Style (16^th Edition):

Palvanen, Mika. “Upper body fractures in older adults - epidemiology and injury mechanisms .” 2001. Doctoral Dissertation, Tampere University. Accessed April 13, 2021. https://trepo.tuni.fi/handle/10024/67104.

MLA Handbook (7^th Edition):

Palvanen, Mika. “Upper body fractures in older adults - epidemiology and injury mechanisms .” 2001. Web. 13 Apr 2021.

Vancouver:

Palvanen M. Upper body fractures in older adults - epidemiology and injury mechanisms . [Internet] [Doctoral dissertation]. Tampere University; 2001. [cited 2021 Apr 13]. Available from: https://trepo.tuni.fi/handle/10024/67104.

Council of Science Editors:

Palvanen M. Upper body fractures in older adults - epidemiology and injury mechanisms . [Doctoral Dissertation]. Tampere University; 2001. Available from: https://trepo.tuni.fi/handle/10024/67104

11. Conte, Cécile. Comportement mécanique du foie en contexte traumatique : rupture et endommagement des tissus : Distortion of spatial visual perception in virtual reality : myth or reality?.

Degree: Docteur es, Sciences du mouvement humain, 2012, Aix Marseille Université

URL: http://www.theses.fr/2012AIXM4103

►

Chaque année en France, on dénombre environ 2000 cas de lésions de la région abdominale lors d'accidents de la route. Ces lésions sont très souvent… (more)

▼

Chaque année en France, on dénombre environ 2000 cas de lésions de la région abdominale lors d'accidents de la route. Ces lésions sont très souvent sévères, mortelles dans 20% des cas, et nécessitent un traitement médical délicat, long et coûteux car il fait appel à la chirurgie dans un cas sur deux. Parmi ces lésions, celles du foie font partie des plus fréquentes mais aussi des plus graves à cause de leur risque hémorragique et sceptique élevé. Une voie d'amélioration de leur prévention passe alors par la conception de systèmes de protection plus efficaces basée sur une connaissance détaillée du comportement de ces structures et des mécanismes lésionnels mis en jeu lors d'un choc. L'objectif de ce travail a donc été de construire un outil numérique de prédiction des lésions hépatiques en situation d'impact. Pour cela, nous avons tout d'abord réalisé une étude expérimentale de compression uniaxiale de foies humains à différentes vitesses pour observer le comportement visco-hyperélastique du foie et comprendre ses modes de rupture tant à l'échelle globale qu'à l'échelle cellulaire. Ensuite, nous avons fixé un cadre théorique adapté à la fois au comportement observé et à la description de l'endommagement et de la rupture. Enfin, nous avons construit un modèle éléments finis intégrant une description fine des sous-structures du foie (parenchyme, capsule et arbres vasculaires), les comportements théoriques déduits de la phase expérimentale, la rupture des différents tissus et la présence de fluide dans les structures vasculaires.

Every year in France, about 2000 cases of abdominal injuries are due to car crashes. These injuries are often severe and 20% of them are lethal. They require long and expensive treatments because half of cases needs surgery. Among abdominal organs, liver is one of the most frequently and severely injured: haemorrhage and infectious risks are real. To improve hepatic injuries prevention, the definition of efficient safety devices should be based on a comprehensive knowledge of these structures behaviour and liver injury mechanisms. Thus the aim of this thesis was to build a predictive tool for hepatic injuries in crash situation. To achieve this point, we performed experimental uniaxial compressions of human livers with various loading speeds. We then observed the visco-hyperelastic behaviour of the liver and its failure modes at the global scale and also at the cells scale. After that, we chose a theoretical framework which was adapted both to the observed behaviour and to the damage and rupture description. We finally built a finite element model which integrate a precise description of liver structures (parenchyma, capsule and vascular trees), the theoretical behaviours deduced from the experimental phase, the failure of the different tissues and the fluid action within the vascular structures. After the model calibration and validation with experimental observations, this FEM makes up the wanted predictive tool for hepatic injuries. This tool can be used both with slow and rapid loading…

Advisors/Committee Members: Arnoux, Pierre-Jean (thesis director).

Subjects/Keywords: Biomécanique; Compression; Visco-hyperélasticité; Endommagement; Rupture; Éléments finis; Foie; Tissus mous; Mécanismes lésionnels; Biomechanics; Compression; Visco-hyperelasticity; Damage; Failure; Finite element; Liver; Soft tissues; Injury mechanisms

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Conte, C. (2012). Comportement mécanique du foie en contexte traumatique : rupture et endommagement des tissus : Distortion of spatial visual perception in virtual reality : myth or reality?. (Doctoral Dissertation). Aix Marseille Université. Retrieved from http://www.theses.fr/2012AIXM4103

Chicago Manual of Style (16^th Edition):

Conte, Cécile. “Comportement mécanique du foie en contexte traumatique : rupture et endommagement des tissus : Distortion of spatial visual perception in virtual reality : myth or reality?.” 2012. Doctoral Dissertation, Aix Marseille Université. Accessed April 13, 2021. http://www.theses.fr/2012AIXM4103.

MLA Handbook (7^th Edition):

Conte, Cécile. “Comportement mécanique du foie en contexte traumatique : rupture et endommagement des tissus : Distortion of spatial visual perception in virtual reality : myth or reality?.” 2012. Web. 13 Apr 2021.

Vancouver:

Conte C. Comportement mécanique du foie en contexte traumatique : rupture et endommagement des tissus : Distortion of spatial visual perception in virtual reality : myth or reality?. [Internet] [Doctoral dissertation]. Aix Marseille Université 2012. [cited 2021 Apr 13]. Available from: http://www.theses.fr/2012AIXM4103.

Council of Science Editors:

Conte C. Comportement mécanique du foie en contexte traumatique : rupture et endommagement des tissus : Distortion of spatial visual perception in virtual reality : myth or reality?. [Doctoral Dissertation]. Aix Marseille Université 2012. Available from: http://www.theses.fr/2012AIXM4103

University of Melbourne

12. NIKFARJAM, MEHRDAD. The effect of laser induced thermal ablation on liver tumours.

Degree: 2005, University of Melbourne

URL: http://hdl.handle.net/11343/38730

► Laser thermal ablation (LTA) is an in situ ablative technique that induces heat destruction of liver tumours. Despite increasing clinical use of LTA, reports of… (more)

Subjects/Keywords: laser; thermal ablation; colorectal liver metastases; liver tumours; mechanisms; direct and indirect thermal injury

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

NIKFARJAM, M. (2005). The effect of laser induced thermal ablation on liver tumours. (Doctoral Dissertation). University of Melbourne. Retrieved from http://hdl.handle.net/11343/38730

Chicago Manual of Style (16^th Edition):

NIKFARJAM, MEHRDAD. “The effect of laser induced thermal ablation on liver tumours.” 2005. Doctoral Dissertation, University of Melbourne. Accessed April 13, 2021. http://hdl.handle.net/11343/38730.

MLA Handbook (7^th Edition):

NIKFARJAM, MEHRDAD. “The effect of laser induced thermal ablation on liver tumours.” 2005. Web. 13 Apr 2021.

Vancouver:

NIKFARJAM M. The effect of laser induced thermal ablation on liver tumours. [Internet] [Doctoral dissertation]. University of Melbourne; 2005. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/11343/38730.

Council of Science Editors:

NIKFARJAM M. The effect of laser induced thermal ablation on liver tumours. [Doctoral Dissertation]. University of Melbourne; 2005. Available from: http://hdl.handle.net/11343/38730

University of Central Florida

13. Trachik, Benjamin. Treatment Matching in PTSD: A Confirmatory Factor Analysis Based On Therapeutic Mechanisms of Action.

Degree: 2015, University of Central Florida

URL: https://stars.library.ucf.edu/etd/1313

► The current study takes an initial step toward deriving a method for empirically based, theory-driven treatment matching in a military population suffering from PTSD. Along… (more)

Subjects/Keywords: Post traumatic stress disorder; ptsd; treatment matching; exposure therapy; prolonged exposure therapy; cognitive processing therapy; mechanisms of action; confirmatory factor analysis; combat; moral injury; physiological arousal; oif; oef; veterans; Clinical Psychology; Psychology

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Trachik, B. (2015). Treatment Matching in PTSD: A Confirmatory Factor Analysis Based On Therapeutic Mechanisms of Action. (Masters Thesis). University of Central Florida. Retrieved from https://stars.library.ucf.edu/etd/1313

Chicago Manual of Style (16^th Edition):

Trachik, Benjamin. “Treatment Matching in PTSD: A Confirmatory Factor Analysis Based On Therapeutic Mechanisms of Action.” 2015. Masters Thesis, University of Central Florida. Accessed April 13, 2021. https://stars.library.ucf.edu/etd/1313.

MLA Handbook (7^th Edition):

Trachik, Benjamin. “Treatment Matching in PTSD: A Confirmatory Factor Analysis Based On Therapeutic Mechanisms of Action.” 2015. Web. 13 Apr 2021.

Vancouver:

Trachik B. Treatment Matching in PTSD: A Confirmatory Factor Analysis Based On Therapeutic Mechanisms of Action. [Internet] [Masters thesis]. University of Central Florida; 2015. [cited 2021 Apr 13]. Available from: https://stars.library.ucf.edu/etd/1313.

Council of Science Editors:

Trachik B. Treatment Matching in PTSD: A Confirmatory Factor Analysis Based On Therapeutic Mechanisms of Action. [Masters Thesis]. University of Central Florida; 2015. Available from: https://stars.library.ucf.edu/etd/1313

14. Reas, Hannah. The Missing Moral Dimension: Perceptions of Transgressions and the Moderating Role of Moral Foundations on Psychological Distress.

Degree: 2020, Seattle Pacific University

URL: https://digitalcommons.spu.edu/cpy_etd/50

► Anxiety and depression can be represented on a dimensional spectrum of negative affect, broadly termed psychological distress. Research has identified several factors that maintain negative… (more)

Subjects/Keywords: socio-political climate; moral foundations; distress; moral transgressions; moral injury; Haidt; Behavior and Behavior Mechanisms; Clinical Psychology; Mental Disorders; Other Psychiatry and Psychology; Psychological Phenomena and Processes; Public Affairs; Social Psychology

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Reas, H. (2020). The Missing Moral Dimension: Perceptions of Transgressions and the Moderating Role of Moral Foundations on Psychological Distress. (Thesis). Seattle Pacific University. Retrieved from https://digitalcommons.spu.edu/cpy_etd/50

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Reas, Hannah. “The Missing Moral Dimension: Perceptions of Transgressions and the Moderating Role of Moral Foundations on Psychological Distress.” 2020. Thesis, Seattle Pacific University. Accessed April 13, 2021. https://digitalcommons.spu.edu/cpy_etd/50.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Reas, Hannah. “The Missing Moral Dimension: Perceptions of Transgressions and the Moderating Role of Moral Foundations on Psychological Distress.” 2020. Web. 13 Apr 2021.

Vancouver:

Reas H. The Missing Moral Dimension: Perceptions of Transgressions and the Moderating Role of Moral Foundations on Psychological Distress. [Internet] [Thesis]. Seattle Pacific University; 2020. [cited 2021 Apr 13]. Available from: https://digitalcommons.spu.edu/cpy_etd/50.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Reas H. The Missing Moral Dimension: Perceptions of Transgressions and the Moderating Role of Moral Foundations on Psychological Distress. [Thesis]. Seattle Pacific University; 2020. Available from: https://digitalcommons.spu.edu/cpy_etd/50

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Loma Linda University

15. Kim, Cherine Hee-Sun. Crotalus Snake Venom Preconditioning to Prevent Surgical Brain Injury.

Degree: PhD, Basic Sciences, 2015, Loma Linda University

URL: https://scholarsrepository.llu.edu/etd/224

► Preventive measures are increasingly relevant to medical practice. Preconditioning, a preemptive therapy that administers mildly harmful stimuli to induce endogenous protective mechanisms before major… (more)

Subjects/Keywords: Biochemistry; Biochemistry, Biophysics, and Structural Biology; Medical Biochemistry; Medicine and Health Sciences; Crotalid Venoms - Therapeutic Use; Crotalus - Metabolism; Brain Injuries - Surgery; Brain Edema - Drug Therapy; Postoperative Hemorrhage; Neuroprotective Agents; Phospholipases - Antagonist & Inhibitors; Matrix Mettaloproteinase Inhibitors; Preconditioning; Endogenous Protective Mechanisms; Surgical Brain Injury Rodent Model; Endogenous Fibrinogen; Perioperative Hemorrhage; Postoperative Brain Edema

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kim, C. H. (2015). Crotalus Snake Venom Preconditioning to Prevent Surgical Brain Injury. (Doctoral Dissertation). Loma Linda University. Retrieved from https://scholarsrepository.llu.edu/etd/224

Chicago Manual of Style (16^th Edition):

Kim, Cherine Hee-Sun. “Crotalus Snake Venom Preconditioning to Prevent Surgical Brain Injury.” 2015. Doctoral Dissertation, Loma Linda University. Accessed April 13, 2021. https://scholarsrepository.llu.edu/etd/224.

MLA Handbook (7^th Edition):

Kim, Cherine Hee-Sun. “Crotalus Snake Venom Preconditioning to Prevent Surgical Brain Injury.” 2015. Web. 13 Apr 2021.

Vancouver:

Kim CH. Crotalus Snake Venom Preconditioning to Prevent Surgical Brain Injury. [Internet] [Doctoral dissertation]. Loma Linda University; 2015. [cited 2021 Apr 13]. Available from: https://scholarsrepository.llu.edu/etd/224.

Council of Science Editors:

Kim CH. Crotalus Snake Venom Preconditioning to Prevent Surgical Brain Injury. [Doctoral Dissertation]. Loma Linda University; 2015. Available from: https://scholarsrepository.llu.edu/etd/224

16. To, Curtis Sai-Hay. Closed-Loop Control and Variable Constraint Mechanisms of a Hybrid Neuroprosthesis to Restore Gait after Spinal Cord Injury.

Degree: PhD, Biomedical Engineering, 2010, Case Western Reserve University School of Graduate Studies

URL: http://rave.ohiolink.edu/etdc/view?acc_num=case1269809553

► A hybrid neuroprosthesis (HNP) was developed with the goal of providing improved gait to individuals with paraplegia relative to existing assistive gait systems. The… (more)

▼ A hybrid neuroprosthesis (HNP) was developed with the goal of providing improved gait to individuals with paraplegia relative to existing assistive gait systems. The HNP is an approach to restoring gait by combining a lower extremity exoskeleton with functional neuromuscular stimulation (FNS). Individually, exoskeletons apply constraints for support, but provide limited step length and depend on upper extremity actions on a walker for forward propulsion. Conversely, FNS mobilizes the limbs through electrical pulses to paralyzed muscles. However, muscles targeted for stimulation quickly fatigue and provide inadequate postural support. The HNP was designed to functionally combine the supportive features of the exoskeleton and joint mobility of FNS. Controllable knee and hip joint mechanisms were developed to support the user while allowing for functional motion from FNS for forward progression. These mechanisms were optimized for maximal torque when supporting a joint and minimal resistance when driven by FNS. A closed-loop controller based on sensor measurements of joint dynamics was developed to synchronize exoskeletal operation with muscle stimulus activity. The objectives were to modulate joint constraints to provide continual support to the user while minimizing the deleterious effects of the constraints on joint mobility, deactivate stimulus to target muscles when certain exoskeletal constraints are engaged to allow the target muscles to rest, and modulate FNS from baseline levels to achieve functional joint positions. The operational response of the controller and mechanisms were characterized through simulation, bench, and able-bodied testing. Implementation of the HNP with an individual with paraplegia respectively showed a 40 % and 16 % reduction in maximum exerted upper extremity forces relative to exoskeleton-only and FNS-only gait. Step lengths were shown to be comparable between HNP and FNS-only gait. When comparing the HNP with and without the FNS modulation, the average gait speed was increased by 16 % with FNS modulation due to a 10 % increase in the hip range of motion. Reductions in muscle activity were feasible when the exoskeletal constraints were enabled. Future work to optimize joint coordination or apply an active mechanism to the exoskeleton to assist hip extension may improve postural control and forward progression. Advisors/Committee Members: Kirsch, Robert (Committee Chair), Audu, Musa (Advisor).

Subjects/Keywords: Biomedical Research; Design; Engineering; Health Care; Mechanical Engineering; Rehabilitation; Technology; hybrid neuroprosthesis; exoskeleton; functional neuromuscular stimulation; gait restoration; assistive gait systems; spinal cord injury; paraplegia; portable/wearable hydraulic constraint mechanisms; closed-loop control of gait; real-time control

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

To, C. S. (2010). Closed-Loop Control and Variable Constraint Mechanisms of a Hybrid Neuroprosthesis to Restore Gait after Spinal Cord Injury. (Doctoral Dissertation). Case Western Reserve University School of Graduate Studies. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=case1269809553

Chicago Manual of Style (16^th Edition):

To, Curtis Sai-Hay. “Closed-Loop Control and Variable Constraint Mechanisms of a Hybrid Neuroprosthesis to Restore Gait after Spinal Cord Injury.” 2010. Doctoral Dissertation, Case Western Reserve University School of Graduate Studies. Accessed April 13, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1269809553.

MLA Handbook (7^th Edition):

To, Curtis Sai-Hay. “Closed-Loop Control and Variable Constraint Mechanisms of a Hybrid Neuroprosthesis to Restore Gait after Spinal Cord Injury.” 2010. Web. 13 Apr 2021.

Vancouver:

To CS. Closed-Loop Control and Variable Constraint Mechanisms of a Hybrid Neuroprosthesis to Restore Gait after Spinal Cord Injury. [Internet] [Doctoral dissertation]. Case Western Reserve University School of Graduate Studies; 2010. [cited 2021 Apr 13]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=case1269809553.

Council of Science Editors:

To CS. Closed-Loop Control and Variable Constraint Mechanisms of a Hybrid Neuroprosthesis to Restore Gait after Spinal Cord Injury. [Doctoral Dissertation]. Case Western Reserve University School of Graduate Studies; 2010. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=case1269809553

Université de Montréal

17. Jodoin, Marianne. Récupération suite à un traumatisme orthopédique avec ou sans traumatisme craniocérébral léger concomitant.

Degree: 2020, Université de Montréal

URL: http://hdl.handle.net/1866/24819

Subjects/Keywords: Traumatisme orthopédique; Traumatisme crâniocérébral léger; Stratégies de dépistage; Douleur; Profil de récupération; Complications orthopédiques; Mécanismes physiologiques; Stimulation magnétique transcranienne; Orthopedic trauma; Mild traumatic brain injury; Screening strategies; Pain; Recovery profile; Orthopedic complications; Physiological mechanisms; Transcranial magnetic stimulation; Health Sciences - Medicine and Surgery / Sciences de la santé - Médecine et chirurgie (UMI : 0564)

Record Details Similar Records Cite « Share

❌

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Jodoin, M. (2020). Récupération suite à un traumatisme orthopédique avec ou sans traumatisme craniocérébral léger concomitant. (Thesis). Université de Montréal. Retrieved from http://hdl.handle.net/1866/24819

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jodoin, Marianne. “Récupération suite à un traumatisme orthopédique avec ou sans traumatisme craniocérébral léger concomitant.” 2020. Thesis, Université de Montréal. Accessed April 13, 2021. http://hdl.handle.net/1866/24819.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jodoin, Marianne. “Récupération suite à un traumatisme orthopédique avec ou sans traumatisme craniocérébral léger concomitant.” 2020. Web. 13 Apr 2021.

Vancouver:

Jodoin M. Récupération suite à un traumatisme orthopédique avec ou sans traumatisme craniocérébral léger concomitant. [Internet] [Thesis]. Université de Montréal; 2020. [cited 2021 Apr 13]. Available from: http://hdl.handle.net/1866/24819.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jodoin M. Récupération suite à un traumatisme orthopédique avec ou sans traumatisme craniocérébral léger concomitant. [Thesis]. Université de Montréal; 2020. Available from: http://hdl.handle.net/1866/24819

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

		in
And / Or
		in
And / Or
		in
And / Or
		in

Open Access Theses and Dissertations