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https://www.readbyqxmd.com/read/28420897/in-vivo-analysis-of-three-dimensional-dynamic-scapular-dyskinesis-in-scapular-or-clavicular-fractures
#1
Eugene Kim, Jai Hyung Park, Byeong-Ryong Han, Hee Jin Park, So Yeon Lee, Tsuyoshi Murase, Kazumi Sugamoto, Sumika Ikemoto, Se-Jin Park
The three-dimensional (3D) kinematics of the scapula were analyzed in vivo in 10 patients with scapular and 10 patients with clavicular fracture. Both the injured shoulder and normal contralateral shoulder were evaluated by computed tomography in the neutral and fully elevated positions. 3D rotational and translational movements of the scapula relative to the thorax during arm elevation were analyzed. A computer simulation program was used to compare rotational elevation/depression in the coronal plane, anterior/posterior tilting in the sagittal plane and protraction/retraction in the axial plane between the normal and affected sides...
April 2017: Acta Medica Okayama
https://www.readbyqxmd.com/read/28411722/kinematic-and-ergonomic-assessment-of-laparoendoscopic-single-site-surgical-instruments-during-simulator-training-tasks
#2
M Susan Hallbeck, Bethany R Lowndes, Bernadette McCrory, Melissa M Morrow, Kenton R Kaufman, Chad A LaGrange
While laparoendoscopic single-site surgery (LESS) appears to be feasible and safe, instrument triangulation, tissue handling, and other bimanual tasks are difficult even for experienced surgeons. Novel technologies emerged to overcome LESS' procedural and ergonomic difficulties of "tunnel vision" and "instrument clashing." Surgeon kinematics, self-reported workload and upper body discomfort were used to compare straight, bent and two articulating instruments while performing two basic surgical tasks in a LESS simulator...
July 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28402687/seatbelt-pre-pretensioner-effect-on-child-sized-dummies-during-run-off-road-events
#3
Isabelle Stockman, Katarina Bohman, Lotta Jakobsson
Objective Run-off road events occur frequently and can result in severe consequences. Several potential injury causing mechanisms can be observed in the diverse types of run-off road events. Real world data shows that different types of environments, such as rough terrain, ditch types and whether multiple events occur, may be important contributing factors to the occupant injury. While countermeasures addressing front seat occupants have been presented, studies on rear seat occupant retention in situations such as run-off road events are lacking...
April 12, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28395854/using-the-microsoft-kinect%C3%A2-to-assess-3-d-shoulder-kinematics-during-computer-use
#4
Xu Xu, Michelle Robertson, Karen B Chen, Jia-Hua Lin, Raymond W McGorry
Shoulder joint kinematics has been used as a representative indicator to investigate musculoskeletal symptoms among computer users for office ergonomics studies. The traditional measurement of shoulder kinematics normally requires a laboratory-based motion tracking system which limits the field studies. In the current study, a portable, low cost, and marker-less Microsoft Kinect™ sensor was examined for its feasibility on shoulder kinematics measurement during computer tasks. Eleven healthy participants performed a standardized computer task, and their shoulder kinematics data were measured by a Kinect sensor and a motion tracking system concurrently...
April 7, 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28395170/the-effects-of-walking-speed-on-upper-body-kinematics-during-gait-in-healthy-subjects
#5
Jacqueline Romkes, Katrin Bracht-Schweizer
Patients undergoing a clinical gait analysis often walk slower than healthy people. However, data on how speed affects upper body movements, especially of the arms and shoulders, are scarce. Therefore, in this descriptive study, we examined how changes in walking speed affect upper-body kinematics and aspects of intersegmental coordination between upper and lower body during overground walking in a group of healthy adult subjects. Three-dimensional gait data were collected on 20 healthy subjects (aged between 22 and 31 years) walking at six speeds ranging from extremely slow to very fast...
March 24, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28385001/comparative-kinematic-gait-analysis-in-young-and-old-beagle-dogs
#6
Malin Lorke, Maray Willen, Karin Lucas, Martin Beyerbach, Patrick Wefstaedt, Hugo Murua Escobar, Ingo Nolte
Age-related involution in dogs involves loss of muscle mass and changes in connective tissue and articular cartilage. The aim of this study was to examine whether an age-related influence on joint mobility can be detected in the absence of diseases. Five young (Ø 2.0 years) and five old (Ø 10.4 years) healthy and sound Beagle dogs were measured during locomotion on a treadmill by computer-assisted gait analysis. Angles of the shoulder, elbow, carpal, hip, stifle and tarsal joints were analyzed, including joint angle progression curves, minimum and maximum joint angles and range of motion (ROM)...
April 6, 2017: Journal of Veterinary Science
https://www.readbyqxmd.com/read/28359696/partial-thickness-tears-involving-the-rotator-cable-lead-to-abnormal-glenohumeral-kinematics
#7
Gregory J Pinkowsky, Neal S ElAttrache, Alexander B Peterson, Masaki Akeda, Michelle H McGarry, Thay Q Lee
HYPOTHESIS: The objective of this study was to determine the biomechanical function of the rotator cable when a partial-thickness (>50%) tear is present. We compared intact specimens with partial tears of the anterior cable followed by partial anterior and posterior tears in regard to glenohumeral kinematics and translation. The hypothesis was that partial-thickness tears will lead to abnormal glenohumeral biomechanics, including glenohumeral translation and path of glenohumeral articulation...
March 27, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28350234/inclined-weight-loaded-walking-at-different-speeds-pelvis-shoulder-coordination-trunk-movements-and-cost-of-transport
#8
Rodrigo Gomes da Rosa, Natalia Andrea Gomeñuka, Henrique Bianchi de Oliveira, Leonardo Alexandre Peyré-Tartaruga
Although studied at level surface, the trunk kinematics and pelvis-shoulder coordination of incline walking are unknown. The aim of this study was to evaluate the speed effects on pelvis-shoulder coordination and trunk movement and the cost of transport (C) during unloaded and loaded (25% of body mass) 15% incline walking. We collected 3-dimensional kinematic and oxygen consumption data from 10 physically active young men. The movements were analyzed in the sagittal plane (inclination and range of trunk motion) and the transverse plane (range of shoulder and pelvic girdle motion and phase difference)...
March 28, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28347934/kinematic-analysis-of-the-shoulder-complex-after-anatomic-and-reverse-total-shoulder-arthroplasty-a-cross-sectional-study
#9
Alexandra Roren, Christelle Nguyen, Clémence Palazzo, Fouad Fayad, Michel Revel, Thomas Gregory, Serge Poiraudeau, Agnès Roby-Brami, Marie-Martine Lefèvre-Colau
BACKGROUND: The movement of the arm relative to the trunk results from coordinated 3D glenohumeral and scapulothoracic movements. Changes in scapula kinematics may occur after total shoulder arthroplasty and could affect clinical and functional outcomes. OBJECTIVES: To assess the 3D movement of the scapula during arm elevation after anatomic and reverse total shoulder arthroplasty. DESIGN/METHODS: This was a single-centre, non-randomized, controlled cross-sectional study...
March 20, 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28327058/extending-energy-optimization-in-goal-directed-aiming-from-movement-kinematics-to-joint-angles
#10
James J Burkitt, Raoul M Bongers, Digby Elliott, Steve Hansen, James L Lyons
Energy optimization in goal-directed aiming has been demonstrated as an undershoot bias in primary movement endpoint locations, especially in conditions where corrections to target overshoots must be made against gravity. Two-component models of upper limb movement have not yet considered how joint angles are organized to deal with the energy constraints associated with moving the upper limb in goal-directed aiming tasks. To address this limitation, participants performed aiming movements to targets in the up and down directions with the index finger and two types of rod extensions attached to the index finger...
March 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28323218/the-postural-control-can-be-optimized-by-the-first-movement-initiation-condition-encountered-when-submitted-to-muscle-fatigue
#11
Florian Monjo, Nicolas Forestier
We investigated whether and how the movement initiation condition (IC) encountered during the early movements performed following focal muscle fatigue affects the postural control of discrete ballistic movements. For this purpose, subjects performed shoulder flexions in a standing posture at maximal velocity under two movement IC, i.e., in self-paced conditions and submitted to a Stroop-like task in which participants had to trigger fast shoulder flexions at the presentation of incongruent colors. Shoulder flexion kinematics, surface muscle activity of focal and postural muscles as well as center-of-pressure kinematics were recorded...
March 18, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28322758/increased-seat-dump-angle-in-a-manual-wheelchair-is-associated-with-changes-in-thoracolumbar-lordosis-and-scapular-kinematics-during-propulsion
#12
Beth A Cloud, Kristin D Zhao, Arin M Ellingson, Ahmad Nassr, Anthony J Windebank, Kai-Nan An
OBJECTIVE: To quantify and compare spinal curvature and shoulder kinematics throughout the manual wheelchair propulsion cycle for individuals with spinal cord injury (SCI) who were seated at 2 different seat dump angles. DESIGN: Single-group, repeated-measures study. SETTING: Academic medical center. PARTICIPANTS: Twenty-eight individuals completed the telephone screening; 21 were eligible and completed the study. INTERVENTIONS: Participants' personal manual wheelchairs were modified to have seat dump angles of 0° or 14°, with a vertical backrest...
March 18, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28319141/heightened-clinical-utility-of-smartphone-versus-body-worn-inertial-system-for-shoulder-function-b-b-score
#13
Claude Pichonnaz, Kamiar Aminian, Céline Ancey, Hervé Jaccard, Estelle Lécureux, Cyntia Duc, Alain Farron, Brigitte M Jolles, Nigel Gleeson
BACKGROUND: The B-B Score is a straightforward kinematic shoulder function score including only two movements (hand to the Back + lift hand as to change a Bulb) that demonstrated sound measurement properties for patients for various shoulder pathologies. However, the B-B Score results using a smartphone or a reference system have not yet been compared. Provided that the measurement properties are comparable, the use of a smartphone would offer substantial practical advantages. This study investigated the concurrent validity of a smartphone and a reference inertial system for the measurement of the kinematic shoulder function B-B Score...
2017: PloS One
https://www.readbyqxmd.com/read/28284228/interactive-wearable-systems-for-upper-body-rehabilitation-a-systematic-review
#14
REVIEW
Qi Wang, Panos Markopoulos, Bin Yu, Wei Chen, Annick Timmermans
BACKGROUND: The development of interactive rehabilitation technologies which rely on wearable-sensing for upper body rehabilitation is attracting increasing research interest. This paper reviews related research with the aim: 1) To inventory and classify interactive wearable systems for movement and posture monitoring during upper body rehabilitation, regarding the sensing technology, system measurements and feedback conditions; 2) To gauge the wearability of the wearable systems; 3) To inventory the availability of clinical evidence supporting the effectiveness of related technologies...
March 11, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28279851/the-sensitivity-of-shoulder-muscle-and-joint-force-predictions-to-changes-in-joint-kinematics-a-monte-carlo-analysis
#15
Wen Wu, Peter Vee Sin Lee, David C Ackland
Kinematics of the shoulder girdle obtained from non-invasive measurement systems such as video motion analysis, accelerometers and magnetic tracking sensors has been shown to be adversely affected by instrumentation measurement errors and skin motion artefact. The degree to which musculoskeletal model calculations of shoulder muscle and joint loading are influenced by variations in joint kinematics is currently not well understood. A three-dimensional musculoskeletal model of the upper limb was used to evaluate the sensitivity of shoulder muscle and joint force...
March 1, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28269659/evaluation-of-shoulder-joint-kinematics-and-muscle-activity-during-geared-and-standard-manual-wheelchair-mobility
#16
Omid Jahanian, Alyssa J Schnorenberg, Brooke A Slavens
Manual wheelchairs often lead to reduced independent function and an increase in shoulder pain and injuries. Geared manual wheelchairs may be a promising alternative that reduces the biomechanical demands of the shoulder needed for tasks such as propulsion on ramps and carpeted floors, while maximizing function and participation. To investigate the effects of geared manual wheelchair mobility during demanding tasks such as ramp ascent, six able-bodied subjects were evaluated in this study. Subjects were asked to propel both standard and geared manual wheelchairs on a tiled level floor and on a wheelchair ADA ramp...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269625/development-and-validation-of-thums-version-5-with-1d-muscle-models-for-active-and-passive-automotive-safety-research
#17
Hideyuki Kimpara, Yuko Nakahira, Masami Iwamoto
Accurately predicting the occupant kinematics is critical to better understand the injury mechanisms during an automotive crash event. The objectives of this study were to develop and validate a finite element (FE) model of the human body integrated with an active muscle model called Total HUman Model for Safety (THUMS) version 5, which has the body size of the 50th percentile American adult male (AM50). This model is characterized by being able to generate a force owing to muscle tone and to predict the occupant response during an automotive crash event...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28265688/from-reaching-to-reach-to-grasp-the-arm-posture-difference-and-its-implications-on-human-motion-control-strategy
#18
Zhi Li, Dejan Milutinović, Jacob Rosen
Reach-to-grasp arm postures differ from those in pure reaching because they are affected by grasp position/orientation, rather than simple transport to a position during a reaching motion. This paper investigates this difference via an analysis of experimental  data collected on reaching and reach-to-grasp motions. A seven-degree-of-freedom (DOFs) kinematic arm model with the swivel angle is used for the motion analysis. Compared to a widely used anatomical arm model, this model distinguishes clearly the four grasping-relevant DOFs (GR-DOFs) that are affected by positions and orientations of the objects to be grasped...
March 6, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28259517/short-term-effects-of-thoracic-spine-manipulation-on-shoulder-impingement-syndrome-a-randomized-controlled-trial
#19
Melina N Haik, Francisco Alburquerque-Sendín, Paula R Camargo
OBJECTIVE: To investigate the short-term effects of thoracic spine manipulation (TSM) on pain, function, scapular kinematics and scapular muscle activity in individuals with shoulder impingement syndrome (SIS). DESIGN: Blinded assessor and patient, randomized controlled trial. SETTING: Laboratory. PARTICIPANTS: Sixty-one patients with SIS. INTERVENTION: Participants were randomly allocated to TSM (n=30) or sham-TSM group (n=31) and attended 2 intervention sessions over a 1-week period...
March 1, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28250107/modulation-of-upper-limb-joint-work-and-power-during-sculling-while-ballasted-with-varying-loads
#20
Jessy Lauer, Annie Hélène Rouard, João Paulo Vilas-Boas
Human musculoskeletal system must modulate work and power output in response to substantial alterations in mechanical demands associated with different tasks. In water, particularly, upper limb muscles must perform net positive work to replace the energy lost against the dissipative fluid load. Where in the upper limb is work and power developed? Is mechanical output modulated similarly at all joints, or are certain muscle groups favored? For the first time, this study examined how work and power per stroke were distributed at the upper limb joints in seven male participants sculling while ballasted with 4, 6, 8, 10, and 12 kg...
February 22, 2017: Journal of Experimental Biology
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