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Biomechanics gait

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https://www.readbyqxmd.com/read/29764690/inter-ray-variation-in-metatarsal-strength-properties-in-humans-and-african-apes-implications-for-inferring-bipedal-biomechanics-in-the-olduvai-hominid-8-foot
#1
Biren A Patel, Tea Jashashvili, Stephanie H Bui, Kristian J Carlson, Nicole L Griffin, Ian J Wallace, Caley M Orr, Randall L Susman
When measured as a ratio of mean midshaft diameter to bone length, the OH 8 fossil hominin foot exhibits a metatarsal (Mt) robusticity pattern of 1 > 5 > 3 > 4 > 2, which differs from the widely perceived "common" modern human pattern (1 > 5 > 4 > 3 > 2); African apes generally exhibit a third pattern (1 > 2 > 3 > 4 > 5). Largely because of the relative ranking of Mt2 and Mt5, OH 8 metatarsals structurally resemble the pattern exhibited by bipedal humans more than the pattern of quadrupedal and climbing African apes...
May 12, 2018: Journal of Human Evolution
https://www.readbyqxmd.com/read/29762541/biomechanical-gait-variable-estimation-using-wearable-sensors-after-unilateral-total-knee-arthroplasty
#2
Ik-Hyun Youn, Jong-Hoon Youn, Joseph A Zeni, Brian A Knarr
Total knee arthroplasty is a common surgical treatment for end-stage osteoarthritis of the knee. The majority of existing studies that have explored the relationship between recovery and gait biomechanics have been conducted in laboratory settings. However, seamless gait parameter monitoring in real-world conditions may provide a better understanding of recovery post-surgery. The purpose of this study was to estimate kinematic and kinetic gait variables using two ankle-worn wearable sensors in individuals after unilateral total knee arthroplasty...
May 15, 2018: Sensors
https://www.readbyqxmd.com/read/29762339/the-relationship-between-fear-avoidance-and-neuromuscular-measures-of-function-in-patients-with-adult-degenerative-scoliosis
#3
Ram Haddas, Isador H Lieberman, Andrew Block
STUDY DESIGN: A prospective cohort study. OBJECTIVE: To examine the relationship of fear-avoidance beliefs and neuromuscular activity during gait in adult degenerative scoliosis (ADS) patients. SUMMARY OF BACKGROUND DATA: Among patients with chronic spine pain, fear-avoidance beliefs are predictive of poor surgical outcomes. Fear-avoidance occurs when patients perceive that movement will worsen underlying physical problems. This process leads them to restrict activity, which further heightens emotional distress...
May 14, 2018: Spine
https://www.readbyqxmd.com/read/29761113/differences-in-hip-joint-biomechanics-and-muscle-activation-in-individuals-with-femoroacetabular-impingement-compared-with-healthy-asymptomatic-individuals-is-level-ground-gait-analysis-enough
#4
Derek J Rutherford, Janice Moreside, Ivan Wong
Background: Femoroacetabular impingement (FAI) is a recognized cause of hip and groin pain and a significant factor in hip joint function during sport. Objective tests for understanding hip function are lacking in this population. Purpose: To determine whether biomechanical and electromyographic features of hip function during level-ground walking differ between a group diagnosed with FAI and those with no symptoms of FAI. Study Design: Controlled laboratory study...
May 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29753444/a-biplanar-x-ray-approach-for-studying-the-3d-dynamics-of-human-track-formation
#5
Kevin G Hatala, David A Perry, Stephen M Gatesy
Recent discoveries have made hominin tracks an increasingly prevalent component of the human fossil record, and these data have the capacity to inform long-standing debates regarding the biomechanics of hominin locomotion. However, there is currently no consensus on how to decipher biomechanical variables from hominin tracks. These debates can be linked to our generally limited understanding of the complex interactions between anatomy, motion, and substrate that give rise to track morphology. These interactions are difficult to study because direct visualization of the track formation process is impeded by foot and substrate opacity...
May 9, 2018: Journal of Human Evolution
https://www.readbyqxmd.com/read/29752054/spatiotemporal-and-kinematic-changes-in-gait-while-carrying-an-energy-harvesting-assault-pack-system
#6
Maria K Talarico, Courtney A Haynes, Julianne S Douglas, Jose Collazo
Soldiers are fielded with a variety of equipment including battery powered electronic devices. An energy harvesting assault pack (EHAP) was developed to provide a power source to recharge batteries and reduce the quantity and load of extra batteries carried into the field. Little is known about the biomechanical implications of carrying a suspended-load energy harvesting system compared to the military standard assault pack (AP). Therefore, the goal of this study was to determine the impact of pack type and load magnitude on spatiotemporal and kinematic parameters while walking at 1...
May 3, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29746965/spine-and-lower-extremity-kinematics-during-gait-in-cervical-spondylotic-myelopathy-patients
#7
Ram Haddas, Sujal Patel, Raj Arakal, Akwasi Boah, Theodore Belanger, Kevin L Ju
BACKGROUND CONTEXT: CSM typically manifests with a slow, progressive stepwise decline in neurologic function, including hand clumsiness and balance difficulties. Gait disturbances are frequently seen in CSM patients, with more advanced cases exhibiting a stiff, spastic gait. PURPOSE: To evaluate the spatiotemporal parameters and spine and lower extremity kinematics during the gait cycle of adult cervical spondylotic myelopathy (CSM) patients prior to surgical intervention...
May 7, 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29745598/-motion-analysis-on-patients-with-knee-osteoarthritis-merged-with-varus-deformity
#8
Zhengfei Zhu, Ling Wang, Dichen Li, Hanghui Wang, Zhongmin Jin, Zhiyuan Wang, Shuguo Hui, Chenglin Chen, Shu Zhang, Wenjiao Li
Aiming at comparing the pre-operative and post-operative gait characteristics and therefore establishing post-operative rehabilitation guidance for patients with end-stage knee osteoarthritis (KOA) merged with varus deformity, this study captured the level walking and sit-to-stand trials of 9 patients with 3-dimensional motion analysis system and after which musculoskeletal multi-body dynamic analysis was conducted. The study indicated that the average range of motion (ROM) of the proposed-surgical knee was 24...
February 1, 2018: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
https://www.readbyqxmd.com/read/29739283/isokinetic-dynamometry-and-gait-analysis-reveal-different-hip-joint-status-in-patients-with-hip-dysplasia
#9
Henrik Sørensen, Dennis B Nielsen, Julie S Jacobsen, Kjeld Søballe, Inger Mechlenburg
BACKGROUND: Objective assessment of hip dysplasia patients' functional hip joint status routinely involves gait analysis or isokinetic dynamometry. However, these methods have shown equivocal results and have not been employed in the same groups of patients and controls. PURPOSE: To assess hip flexor and abductor moments by isokinetic dynamometry in the dysplasia patient and controls, for which we previously reported smaller flexor and slightly larger abductor moments during gait in patients compared to controls...
May 1, 2018: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29734501/using-multidimensional-topological-data-analysis-to-identify-traits-of-hip-osteoarthritis
#10
Jasmine Rossi-deVries, Valentina Pedoia, Michael A Samaan, Adam R Ferguson, Richard B Souza, Sharmila Majumdar
BACKGROUND: Osteoarthritis (OA) is a multifaceted disease with many variables affecting diagnosis and progression. Topological data analysis (TDA) is a state-of-the-art big data analytics tool that can combine all variables into multidimensional space. TDA is used to simultaneously analyze imaging and gait analysis techniques. PURPOSE: To identify biochemical and biomechanical biomarkers able to classify different disease progression phenotypes in subjects with and without radiographic signs of hip OA...
May 7, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29734124/ankle-joint-function-during-walking-in-tophaceous-gout-a-biomechanical-gait-analysis-study
#11
Matthew Carroll, Mark Boocock, Nicola Dalbeth, Sarah Stewart, Christopher Frampton, Keith Rome
BACKGROUND: The foot and ankle are frequently affected in tophaceous gout, yet kinematic and kinetic changes in this region during gait are unknown. The aim of the study was to evaluate ankle biomechanical characteristics in people with tophaceous gout using three-dimensional gait analysis. METHODS: Twenty-four participants with tophaceous gout were compared with 24 age-and sex-matched control participants. A 9-camera motion analysis system and two floor-mounted force plates were used to calculate kinematic and kinetic parameters...
April 17, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29724536/ankle-and-foot-power-in-gait-analysis-implications-for-science-technology-and-clinical-assessment
#12
REVIEW
Karl E Zelik, Eric C Honert
In human gait analysis studies, the entire foot is typically modeled as a single rigid-body segment; however, this neglects power generated/absorbed within the foot. Here we show how treating the entire foot as a rigid body can lead to misunderstandings related to (biological and prosthetic) foot function, and distort our understanding of ankle and muscle-tendon dynamics. We overview various (unconventional) inverse dynamics methods for estimating foot power, partitioning ankle vs. foot contributions, and computing combined anklefoot power...
April 18, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29723652/kinetic-differences-between-level-walking-and-ramp-descent-in-individuals-with-unilateral-transfemoral-amputation-using-a-prosthetic-knee-without-a-stance-control-mechanism
#13
Yusuke Okita, Nobuya Yamasaki, Takashi Nakamura, Tsutomu Kubo, Atsuko Mitsumoto, Toru Akune
BACKGROUND: Individuals with transfemoral amputation (TFA) have difficulty in descending ramps. Although individuals with TFA who descend ramps are speculated to have greater biomechanical demands, this has not been quantified. RESEARCH QUESTION: How do individuals with TFA wearing a prosthetic knee without a stance control mechanism adapt their gait biomechanics to a slightly declined surface? METHODS: We retrospectively analyzed data of level walking and ramp descent (5° decline) from six subjects with TFA who used a prosthesis without a stance control mechanism...
April 26, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29721451/biomechanical-response-of-the-plantar-tissues-of-the-foot-in-healthy-and-degenerative-conditions
#14
Chiara Giulia Fontanella, Emanuele Luigi Carniel, Veronica Macchi, Andrea Porzionato, Raffaele De Caro, Arturo Nicola Natali
Introduction: This work reports a set of results on the mechanical response of foot plantar tissues in healthy and degenerative conditions during the gait cycle, by means of a computational approach. Methods: A three dimensional finite element model of the foot was developed starting from the analysis of biomedical images. Different constitutive models were defined to interpret the mechanical response of the biological tissues. In particular, a specific visco-hyperelastic constitutive formulation was provided for foot plantar soft tissue considering the general features of tissue mechanics...
October 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/29720948/the-oxygen-consumption-and-metabolic-cost-of-walking-and-running-in-adults-with-achondroplasia
#15
David T Sims, Gladys L Onambélé-Pearson, Adrian Burden, Carl Payton, Christopher I Morse
The disproportionate body mass and leg length of Achondroplasic individuals may affect their net oxygen consumption ([Formula: see text]O2 ) and metabolic cost (C) when walking at running compared to those of average stature (controls). The aim of this study was to measure submaximal [Formula: see text]O2 and C during a range of set walking speeds (SWS; 0.56 - 1.94 m⋅s-1 , increment 0.28 m⋅s-1 ), set running speeds (SRS; 1.67 - 3.33 m⋅s-1 , increment 0.28 m⋅s-1 ) and a self-selected walking speed (SSW)...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29715509/relationship-between-knee-joint-contact-forces-and-external-knee-joint-moments-in-patients-with-medial-knee-osteoarthritis-effects-of-gait-modifications
#16
R E Richards, M S Andersen, J Harlaar, J C van den Noort
OBJECTIVE: To evaluate i) the relationship between the knee contact force (KCF) and knee adduction and flexion moments (KAM and KFM) during normal gait in people with medial knee osteoarthritis (KOA), ii) to evaluate the effects on the KCF of walking with a modified gait pattern and iii) to evaluate the relationship between changes in the KCF and changes in the knee moments. METHOD: We modeled the gait biomechanics of thirty-five patients with medial KOA using the AnyBody Modeling System during normal gait and two modified gait patterns...
April 28, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29709498/clinical-and-biomechanical-changes-following-a-four-month-toe-out-gait-modification-program-for-people-with-medial-knee-osteoarthritis-a-randomized-controlled-trial
#17
Michael A Hunt, Jesse M Charlton, Natasha M Krowchuk, Calvin T Tse, Gillian L Hatfield
OBJECTIVE: To compare changes in knee pain, function, and loading following a four-month progressive walking program with or without toe-out gait modification program in people with medial tibiofemoral knee osteoarthritis. DESIGN: Individuals with medial knee osteoarthritis were randomized to a four month program to increase walking activity with (toe-out) or without (progressive walking) concomitant toe-out gait modification. The walking program was similar between the two groups, except that the gait modification group were trained to walk with 15° more toe-out...
April 27, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29708075/risk-factors-associated-with-musculoskeletal-injury-a-prospective-study-of-british-infantry-recruits
#18
Jagannath Sharma, R Heagerty, S Dalal, B Banerjee, T Booker
BACKGROUND: Musculoskeletal injury (MSKI), a common problem in both military and physically active civilian populations has been suggested to result from both extrinsic and intrinsic factors. OBJECTIVE: This study was to investigate prospectively whether gait biomechanics, aerobic fitness level and smoking status as well as entry military selection test variables can be used to predict MSKI development during recruit training. METHOD: British infantry male recruits (n = 562) were selected for the study...
April 29, 2018: Current Rheumatology Reviews
https://www.readbyqxmd.com/read/29707431/a-public-dataset-of-overground-and-treadmill-walking-kinematics-and-kinetics-in-healthy-individuals
#19
Claudiane A Fukuchi, Reginaldo K Fukuchi, Marcos Duarte
In a typical clinical gait analysis, the gait patterns of pathological individuals are commonly compared with the typically faster, comfortable pace of healthy subjects. However, due to potential bias related to gait speed, this comparison may not be valid. Publicly available gait datasets have failed to address this issue. Therefore, the goal of this study was to present a publicly available dataset of 42 healthy volunteers (24 young adults and 18 older adults) who walked both overground and on a treadmill at a range of gait speeds...
2018: PeerJ
https://www.readbyqxmd.com/read/29706719/effects-of-pelvic-range-of-motion-and-lower-limb-muscle-activation-pattern-on-over-ground-and-treadmill-walking-at-the-identical-speed-in-healthy-adults
#20
Seung-Yeop Lim, Wan-Hee Lee
[Purpose] Many studies have compared over-ground and treadmill walking, but the biomechanical relationship between the two gait modes is unclear. The aim of this study was to analyze differences in pelvic range of motion and lower limb muscles activity during over-ground and treadmill walking in healthy adults. Moreover, we aimed to analyze differences according to gender. [Subjects and Methods] Twenty-three healthy adults (9 men, 14 women) between 25 and 35 years of age walked at the identical speed for 30 seconds each in two difference gait modes...
April 2018: Journal of Physical Therapy Science
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