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Lower limb kinematics

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https://www.readbyqxmd.com/read/29351875/trunk-and-pelvic-dynamics-during-transient-turns-among-individuals-with-unilateral-traumatic-lower-limb-amputation
#1
Pawel R Golyski, Brad D Hendershot
Prior work has identified alterations in trunk-pelvic dynamics with lower limb amputation (LLA) during in-line walking; however, evaluations of other ambulatory tasks are limited. Turns are ubiquitous in daily life but can be challenging for individuals with LLA, prompting additional or unique proximal compensations when changing direction, which over time may lead to development of low back pain. We hypothesized such proximal kinematic differences between persons with and without LLA would exist in the sagittal and frontal planes...
January 16, 2018: Human Movement Science
https://www.readbyqxmd.com/read/29350551/hip-and-knee-kinematics-and-kinetics-during-landing-tasks-after-anterior-cruciate-ligament-reconstruction-a-systematic-review-and-meta-analysis
#2
Adam S Lepley, Christopher M Kuenze
OBJECTIVE:   To evaluate the current evidence concerning kinematic and kinetic strategies adopted during dynamic landing tasks by patients with anterior cruciate ligament reconstruction (ACLR). DATA SOURCES:   PubMed, Web of Science. STUDY SELECTION:   Original research articles that evaluated kinematics or kinetics (or both) during a landing task in those with a history of ACLR were included. DATA EXTRACTION:   Methodologic quality was assessed using the modified Downs and Black checklist...
January 19, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29345541/running-mechanics-and-metabolic-responses-with-water-bottles-and-bottle-belt-holders
#3
Heather K Vincent, Laura A Zdziarski, Kyle Fallgatter, Giorgio Negron, Cong Chen, Trevor Leavitt, MaryBeth Horodyski, Joseph G Wasser, Kevin R Vincent
PURPOSE: This study determined whether differential kinematics, kinetics, rates of energy use and cardiopulmonary responses occurred during running with water bottles and bottle belt holders compared to running only. METHODS: Trained runners (N=42; 27.2±6.4 yr) ran on an instrumented treadmill for four conditions in a randomized order: 1) control run (CON); 2) hand-held full water bottle (FULL, 16.9 fluid oz; 454 g); 3) hand-held half-full water bottle (HALF, 8...
January 18, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29340004/performance-and-kinematic-differences-in-putting-between-healthy-and-disabled-elite-golfers
#4
Tomáš Gryc, Petr Stastny, František Zahálka, Wojciech Smółka, Piotr Żmijewski, Artur Gołaś, Marek Zawartka, Tomáš Malý
Golfers with disability are limited in the execution of the full golf swing, but their performance in putting may be comparable because this stroke does not demand significant strength, balance and range of motion. Therefore, the aim of this study was to compare putting performance, kinetic and kinematic consistency between golfers with different disabilities and healthy athletes. The participants consisted of three disabled athletes (perinatal cerebral palsy, multiple sclerosis, below knee lower limb amputee) and three healthy golfers (age 34 ± 4...
December 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29334862/the-effects-of-an-unanticipated-side-cut-on-lower-extremity-kinematics-and-ground-reaction-forces-during-a-drop-landing
#5
Jae P Yom, Tane Owens, Scott Arnett, Justin Beebe, Veronica Son
Unanticipated direction to cut after landing may alter the lower extremity landing biomechanics when performing landing motions. These alterations may potentially increase the risk of ACL injury. The purpose of this study was to determine if an unanticipated side-cut affects lower extremity landing biomechanics in females. Eighteen recreational female athletes participated in two blocks of testing: the first block of testing consisted of three acceptable trials of anticipated dominant limb and non-dominant limb 45-degree diagonal cutting after landing, which were performed in a counterbalanced order...
January 16, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29334675/effects-of-running-retraining-on-biomechanical-factors-associated-with-lower-limb-injury
#6
Marcus D Dunn, David B Claxton, Graham Fletcher, Jonathan S Wheat, David M Binney
Injury risk is an important concern for runners; however, limited evidence exists regarding changes to injury risk following running style retraining. Biomechanical factors, such as absolute peak free moment, knee abduction impulse, peak foot eversion and foot eversion excursion, have been shown to predict lower limb injury. The aim of this study was to assess the effects of Pose running retraining on biomechanical factors associated with lower limb running injury. Twenty uninjured recreational runners were pair-matched based on their five km run time performance and randomly assigned to control (n = 10) and intervention (three 2-h Pose running retraining sessions) groups (n = 10)...
January 12, 2018: Human Movement Science
https://www.readbyqxmd.com/read/29332762/the-effect-of-foot-orthoses-on-joint-moment-asymmetry-in-male-children-with-flexible-flat-feet
#7
AmirAli Jafarnezhadgero, Morteza Madadi Shad, Reed Ferber
INTRODUCTION: It has been widely postulated that structural and functional misalignments of the foot, such as flat foot, may cause mechanical deviations of the lower limb during walking. The aim of this study was to investigate the effect of foot orthoses on lower extremity joint moment asymmetry during the stance phase of walking in children with asymptomatic flexible flat feet. METHODS: Fourteen volunteer male children, clinically diagnosed with flexible flat feet, participated in this study...
January 2018: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29329889/exploring-individual-adaptations-to-an-anterior-cruciate-ligament-injury-prevention-programme
#8
Aaron S Fox, Jason Bonacci, Scott G McLean, Natalie Saunders
BACKGROUND: Individual responses to anterior cruciate ligament injury prevention programmes (ACL IPPs) have received little attention. This study examined the effects of an ACL IPP on neuromuscular control and lower limb biomechanics during landing at the group and individual levels. METHODS: Sixteen female athletes were randomly allocated to training (n=8) or control (n=8) groups. Electromyography, and three-dimensional kinematic and kinetic data were collected during landing at two testing sessions...
January 9, 2018: Knee
https://www.readbyqxmd.com/read/29327823/a-previous-hamstring-injury-affects-kicking-mechanics-in-soccer-players
#9
Archit Navandar, Santiago Veiga, Gonzalo Torres, David Chorro, Enrique Navarro
BACKGROUND: Although the kicking skill is influenced by limb dominance and sex, how a previous hamstring injury affects kicking has not been studied in detail. Thus, the objective of this study was to evaluate the effect of sex and limb dominance on kicking in limbs with and without a previous hamstring injury. METHODS: 45 professional players (males: n=19, previously injured players=4, age=21.16 ± 2.00 years; females: n=19, previously injured players=10, age=22...
January 10, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29325902/which-data-should-be-tracked-in-forward-dynamic-optimisation-to-best-predict-muscle-forces-in-a-pathological-co-contraction-case
#10
Colombe Bélaise, Benjamin Michaud, Fabien Dal Maso, Katja Mombaur, Mickaël Begon
The choice of the cost-function for predicting muscle forces during a movement remains a challenge, especially in patients with neuromuscular disorders. Forward dynamics-based optimisations mainly track joint kinematics or torques, combined with a least-excitation criterion. Tracking marker trajectories and/or electromyography (EMG) has rarely been proposed. Our objective was to determine the best tracking objective-function to accurately predict the upper-limb muscle forces. A musculoskeletal model was created and EMG was simulated to obtain a reference movement - a shoulder abduction...
January 4, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29325901/dynamic-structure-of-lower-limb-joint-angles-during-walking-post-stroke
#11
Kelley Kempski, Louis N Awad, Thomas S Buchanan, Jill S Higginson, Brian A Knarr
BACKGROUND: Variability in joint kinematics is necessary for adaptability and response to everyday perturbations; however, intrinsic neuromotor changes secondary to stroke often cause abnormal movement patterns. How these abnormal movement patterns relate to joint kinematic variability and its influence on post-stroke walking impairments is not well understood. OBJECTIVE: The purpose of this study was to evaluate the movement variability at the individual joint level in the paretic and non-paretic limbs of individuals post-stroke...
December 15, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29324873/a-new-strength-assessment-to-evaluate-the-association-between-muscle-weakness-and-gait-pathology-in-children-with-cerebral-palsy
#12
Marije Goudriaan, Angela Nieuwenhuys, Simon-Henri Schless, Nathalie Goemans, Guy Molenaers, Kaat Desloovere
AIM: The main goal of this validation study was to evaluate whether lower limb muscle weakness and plantar flexor rate of force development (RFD) related to altered gait parameters in children with cerebral palsy (CP), when weakness was assessed with maximal voluntary isometric contractions (MVICs) in a gait related test position. As a subgoal, we analyzed intra- and intertester reliability of this new strength measurement method. METHODS: Part 1 -Intra- and intertester reliability were determined with the intra-class correlation coefficient (ICC2,1) in 10 typical developing (TD) children (age: 5-15)...
2018: PloS One
https://www.readbyqxmd.com/read/29306147/the-effect-of-simulated-leg-length-discrepancy-on-lower-limb-biomechanics-during-gait
#13
Sam Khamis, Eli Carmeli
Understanding the effects of leg length discrepancy (LLD) on the biomechanics of gait and determining as to what extent of LLD alters gait is essential. A total of 91 biomechanical data were assessed from 14 lower limbs of healthy individuals walking under random conditions: shod only and with a 5, 10, 15, 20, 30 and 40 mm sole lift. Lower limb kinematics and dynamic leg length (DLL) were measured by a motion capture system. Hotelling's T-Square test was used to evaluate the differences in DLLs throughout the gait cycle in conjunction with differences between the sides based on the maximal stance phase and minimal swing phase DLLs...
December 28, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29304509/effect-of-foot-progression-angle-adjustment-on-the-knee-adduction-moment-and-knee-joint-contact-force-in-runners-with-and-without-knee-osteoarthritis
#14
I C D Fong, W S C Li, W K J Tai, T W R Tsang, J H Zhang, T L W Chen, H Baur, P Eichelberger, R T H Cheung
BACKGROUND: Knee adduction moment (KAM) is often used as a surrogate marker of knee contact force (KCF) during walking. Previous studies have reported potential benefits to reduce KAM in patients with knee osteoarthritis (OA) by foot progression angle adjustment. However, KAM is an external moment and it does not consider any muscle contribution to the joint loading, which should pose a greater influence in running than walking. RESEARCH QUESTION: This study used a computational model to compare KAM and KCF between runners with and without knee OA during running...
December 30, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29284521/exercise-intervention-for-unilateral-amputees-with-low-back-pain-study-protocol-for-a-randomised-controlled-trial
#15
Joseph G Wasser, Daniel C Herman, MaryBeth Horodyski, Jason L Zaremski, Brady Tripp, Phillip Page, Kevin R Vincent, Heather K Vincent
BACKGROUND: Atraumatic lower limb amputation is a life-changing event for approximately 185,000 persons in the United States each year. A unilateral amputation is associated with rapid changes to the musculoskeletal system including leg and back muscle atrophy, strength loss, gait asymmetries, differential mechanical joint loading and leg length discrepancies. Even with high-quality medical care and prostheses, amputees still develop secondary musculoskeletal conditions such as chronic low back pain (LBP)...
December 29, 2017: Trials
https://www.readbyqxmd.com/read/29276707/reliability-and-minimal-detectable-change-values-for-predictions-of-knee-forces-during-gait-and-stair-ascent-derived-from-the-freebody-musculoskeletal-model-of-the-lower-limb
#16
Phil D B Price, Conor Gissane, Daniel J Cleather
FreeBody is a musculoskeletal model of the lower limb used to calculate predictions of muscle and joint contact forces. The validation of FreeBody has been described in a number of publications; however, its reliability has yet to be established. The purpose of this study was, therefore, to establish the test-retest reliability of FreeBody in a population of healthy adults in order to add support to previous and future research using FreeBody that demonstrates differences between cohorts after an intervention...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/29238821/multibody-kinematic-optimization-for-the-estimation-of-upper-and-lower-limb-human-joint-kinematics-a-systematic-review
#17
Mickael Begon, Michael S Andersen, Raphael Dumas
Multibody kinematic optimization (MKO) aims at reducing soft tissue artefact (STA) and is key in musculoskeletal modeling. The objective was to identify the numerical methods and the level of validation for the estimation of the human joint kinematics using MKO. Seventy-four articles were extracted from a systematic search in five databases and cross-referencing. Model-derived kinematics was obtained using either optimization or Kalman filtering to minimize the difference between measured (by skin markers, electromagnetic or inertial sensors) and model-derived positions and/or orientations...
December 13, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/29238596/limb-symmetry-during-double-leg-squats-and-single-leg-squats-on-land-and-in-water-in-adults-with-long-standing-unilateral-anterior-knee-pain-a-cross-sectional-study
#18
Anna C Severin, Brendan J Burkett, Mark R McKean, Aaron N Wiegand, Mark G L Sayers
Background: The presence of pain during movement typically results in changes in technique. However, the physical properties of water, such as flotation, means that water-based exercise may not only reduce compensatory movement patterns but also allow pain sufferers to complete exercises that they are unable to perform on land. The purpose of this study was to assess bilateral kinematics during double-leg squats and single-leg squats on land and in water in individuals with unilateral anterior knee pain...
2017: BMC Sports Science, Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29238512/an-approach-to-developing-customized-total-knee-replacement-implants
#19
Xinyu Li, Changjiang Wang, Yuan Guo, Weiyi Chen
Total knee replacement (TKR) has been performed for patients with end-stage knee joint arthritis to relieve pain and gain functions. Most knee replacement patients can gain satisfactory knee functions; however, the range of motion of the implanted knee is variable. There are many designs of TKR implants; it has been suggested by some researchers that customized implants could offer a better option for patients. Currently, the 3-dimensional knee model of a patient can be created from magnetic resonance imaging (MRI) or computed tomography (CT) data using image processing techniques...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29238181/the-link-between-weight-shift-asymmetry-and-gait-disturbances-in-chronic-hemiparetic-stroke-patients
#20
Andrzej Szopa, Małgorzata Domagalska-Szopa, Anetta Lasek-Bal, Amadeusz Żak
Introduction: While the asymmetry of body posture and the asymmetrical nature of hemiparetic gait in poststroke (PS) patients are well documented, the role of weight shift asymmetry in gait disorders after stroke remains unclear. Objective: We examined the association of weight-bearing asymmetry (WBA) between paretic and nonparetic lower limbs during quiet standing with the degree of deviation of hemiplegic gait from normal gait evaluated by the Gillette Gait Index (GGI) incorporating 16 distinct clinically important kinematic and temporal parameters in chronic PS patients...
2017: Clinical Interventions in Aging
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