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shoulder kinematics

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https://www.readbyqxmd.com/read/29340004/performance-and-kinematic-differences-in-putting-between-healthy-and-disabled-elite-golfers
#1
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/29338846/comparison-of-two-trunk-electromagnetic-sensor-placement-methods-during-shoulder-motion-analysis
#2
Hillary A Plummer, Federico Pozzi, Lori A Michener
For kinematic studies of the shoulder, electromagnetic sensors are commonly placed on the humerus, scapula, and trunk. The trunk sensor is used to describe humeral and scapular kinematics with respect to the trunk. There are two common trunk sensor placements, the sternum or third thoracic vertebrae (T3). It is currently unclear if placement of the trunk sensor affects kinematics, making it difficult to compare data across studies. The purpose of this study was to compare two trunk sensor placements (T3 and sternum) on trunk and scapular kinematics during arm elevation...
December 24, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29335773/effects-of-combining-ergonomic-interventions-and-motor-control-exercises-on-muscle-activity-and-kinematics-in-people-with-work-related-neck-shoulder-pain
#3
Sharon M H Tsang, Billy C L So, Rufina W L Lau, Jie Dai, Grace P Y Szeto
PURPOSE: This study compared the effects of "Ergomotor" intervention and conventional physiotherapy, on influencing the motor control in the neck-shoulder region in people with work-related neck-shoulder pain (WRNSP). METHODS: 101 patients (age range 20-54 years) diagnosed with chronic WRNSP were randomized into control (CO) group (n = 50) and Ergomotor (EM) group (n = 51). Each group received a 12-week intervention. Participants in CO group received treatment for pain relief and general exercises...
January 15, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29334846/scapular-motion-adaptations-in-junior-overhead-athletes-a-three-dimensional-kinematic-analysis-in-tennis-players-and-non-overhead-athletes
#4
Elif Turgut, Filiz Fatma Colakoglu, Gul Baltaci
Adult overhead athletes without a history of shoulder injury show scapular adaptations. There is a lack of detailed assessment of scapular kinematics in junior overhead athletes. This study aims to investigate three-dimensional scapular kinematics in junior overhead athletes. We recruited a total of 20 junior tennis players and 20 healthy children without participation in any overhead sports in this study. Bilateral scapular kinematic data were recorded using an electromagnetic tracking device for scapular plane glenohumeral elevation...
January 16, 2018: Sports Biomechanics
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
#5
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/29325577/dynamic-kinematics-of-the-glenohumeral-joint-in-shoulders-with-rotator-cuff-tears
#6
Naoya Kozono, Takamitsu Okada, Naohide Takeuchi, Satoshi Hamai, Hidehiko Higaki, Takeshi Shimoto, Satoru Ikebe, Hirotaka Gondo, Yoshitaka Nakanishi, Takahiro Senju, Yasuharu Nakashima
BACKGROUND: No clear trend has emerged from the literature regarding three-dimensional (3D) translations of the humerus relative to the scapula in shoulders with rotator cuff tears (RCTs). The purpose of this study was to evaluate the kinematics of RCT shoulders using 3D-to-two-dimensional (2D) model-to-image registration techniques. METHODS: Dynamic glenohumeral kinematics during scapular plane abduction and axial rotation were analyzed in 11 RCT patients and 10 healthy control subjects...
January 11, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29318167/a-comparison-of-cervical-spine-motion-after-immobilization-with-a-traditional-spine-board-and-full-body-vacuum-mattress-splint
#7
Brian E Etier, Grant E Norte, Megan M Gleason, Dustin L Richter, Kelli F Pugh, Keith B Thomson, Lindsay V Slater, Joe M Hart, Stephen F Brockmeier, David R Diduch
Background: The National Athletic Trainers' Association (NATA) advocates for cervical spine immobilization on a rigid board or vacuum splint and for removal of athletic equipment before transfer to an emergency medical facility. Purpose: To (1) compare triplanar cervical spine motion using motion capture between a traditional rigid spine board and a full-body vacuum splint in equipped and unequipped athletes, (2) assess cervical spine motion during the removal of a football helmet and shoulder pads, and (3) evaluate the effect of body mass on cervical spine motion...
December 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29312875/functional-dynamic-radiography-with-computer-analysis-for-physiological-chest-imaging-and-kinematic-joint-imaging
#8
Shigeru Sanada
We developed a functional digital radiography system that provides physiological and functional information of the chest and/or joints using an X-ray flat-panel detector (FPD) system. During chest examination, sequential chest radiographs are taken from inspiration to expiration in order to analyze diaphragmatic movements. Pixel value changes in localized areas of the lung are then assessed to analyze ventilation and circulation. For limb joints, such as the wrist, shoulder, and knee, sequential radiographs during flexion and extension or rotational movement are considered, and movement angles are analyzed...
December 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/29287160/kinematic-analysis-of-the-thoracic-limb-of-healthy-dogs-during-descending-stair-and-ramp-exercises
#9
Nadia L Kopec, Jane M Williams, Gillian F Tabor
OBJECTIVE To compare the kinematics of the thoracic limb of healthy dogs during descent of stairs and a ramp with those during a trot across a flat surface (control). ANIMALS 8 privately owned dogs. PROCEDURES For each dog, the left thoracic limb was instrumented with 5 anatomic markers to facilitate collection of 2-D kinematic data during each of 3 exercises (descending stairs, descending a ramp, and trotting over a flat surface). The stair exercise consisted of 4 steps with a 35° slope. For the ramp exercise, a solid plank was placed over the steps to create a ramp with a 35° slope...
January 2018: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/29283018/a-practical-clinical-kinematic-model-for-the-upper-limbs
#10
Jonathan J Noble, Nicola Rd Fry, Carly R Bingham, Rebecca H East, Adam P Shortland
A novel clinically practical upper limb model is introduced that has been developed through clinical use in children and adults with neurological conditions to guide surgery to the elbow and wrist. This model has a minimal marker set, minimal virtual markers, and no functional joint centres to minimise the demands on the patient and duration of data collection. The model calculates forearm supination independently from the humerus segment, eliminating any errors introduced by poor modelling of the shoulder joint centre...
December 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29276534/the-effect-of-humeral-polyethylene-insert-constraint-on-reverse-shoulder-arthroplasty-biomechanics
#11
Irfan Abdulla, Daniel G Langohr, Joshua W Giles, James A Johnson, George S Athwal
Background: There is little information on the effects of altering reverse shoulder arthroplasty (RSA) polyethylene constraint on joint load, load angle and deltoid force. The present biomechanical study aimed to investigate the effects of changing RSA polyethylene constraint on joint load, load angle, deltoid force and range of motion. Methods: A custom RSA implant capable of measuring forces across the joint with varying polyethylene constraint was tested in six cadaveric shoulders...
January 2018: Shoulder & Elbow
https://www.readbyqxmd.com/read/29276370/statistical-prediction-of-hand-force-exertion-levels-in-a-simulated-push-task-using-posture-kinematics
#12
Sol Lim, Clive D'Souza
This study explored the use of body posture kinematics derived from wearable inertial sensors to estimate force exertion levels in a two-handed isometric pushing and pulling task. A prediction model was developed grounded on the hypothesis that body postures predictably change depending on the magnitude of the exerted force. Five body postural angles, viz., torso flexion, pelvis flexion, lumbar flexion, hip flexion, and upper arm inclination, collected from 15 male participants performing simulated isometric pushing and pulling tasks in the laboratory were used as predictor variables in a statistical model to estimate handle height (shoulder vs...
September 2017: Proceedings of the Human Factors and Ergonomics Society ... Annual Meeting
https://www.readbyqxmd.com/read/29274455/biomechanical-analysis-of-the-shoulder-of-swimmers-after-a-maximal-effort-test
#13
Felipe S Serenza, Anamaria S Oliveira, Bruno L S Bedo, Fàbio P Mariano, Rodrigo Aquino, Martin Warner, Paulo R P Santiago
OBJECTIVES: To compare the kinematics and electromyography of the periscapular muscles in swimmers before and after a 3-min maximal effort test. PARTICIPANTS: 16 competitive swimmers. MAIN OUTCOME MEASUREMENTS: Infrared cameras were used to record kinematics in the scapular plane in synchronization with the electromyography system. RESULTS: There was an increase in internal rotation in all angles (p < 0.05), an increase of the anterior tilt, with 120° of elevation (p = 0...
November 6, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29245139/scapular-focused-exercise-treatment-protocol-for-shoulder-impingement-symptoms-three-dimensional-scapular-kinematics-analysis
#14
Gisele Harumi Hotta, Adriane Lopes Santos, Kevin James McQuade, Anamaria Siriani de Oliveira
BACKGROUND: The present study aimed to describe the effects of a periscapular strengthening and neuromuscular training protocol in three-dimensional scapular kinematics and resting positioning in participants with shoulder impingement symptoms. Self-reported function was also evaluated. METHOD: The study group comprised 50 subjects with shoulder impingement syndrome (control group, n=25; treatment group, n=25). The treatment group underwent 8weeks of neuromuscular training and periscapular strengthening...
December 11, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/29244838/muscle-function-in-glenohumeral-joint-stability-during-lifting-task
#15
Yoann Blache, Mickaël Begon, Benjamin Michaud, Landry Desmoulins, Paul Allard, Fabien Dal Maso
Ensuring glenohumeral stability during repetitive lifting tasks is a key factor to reduce the risk of shoulder injuries. Nevertheless, the literature reveals some lack concerning the assessment of the muscles that ensure glenohumeral stability during specific lifting tasks. Therefore, the purpose of this study was to assess the stabilization function of shoulder muscles during a lifting task. Kinematics and muscle electromyograms (n = 9) were recorded from 13 healthy adults during a bi-manual lifting task performed from the hip to the shoulder level...
2017: PloS One
https://www.readbyqxmd.com/read/29241660/effects-of-glenohumeral-internal-rotation-deficit-on-baseball-pitching-among-pitchers-of-different-ages
#16
Paul Pei-Hsi Chou, You-Li Chou, Yan-Sheng Wang, Rong-Tyai Wang, Hwai-Ting Lin
BACKGROUND: Previous studies have reported that glenohumeral internal rotation deficit (GIRD) may increase the risk of shoulder injury. However, the effects of GIRD on baseball pitching among pitchers of different age groups are still unclear. METHODS: The study participants were 24 high school and 24 university pitchers. For each age group, the pitchers were evenly divided into a GIRD group and a normal group. The pitching motion of each participant was captured using a motion analysis system at a sampling frequency of 300 Hz...
December 11, 2017: Journal of Shoulder and Elbow Surgery
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/29237578/the-effectiveness-of-exercise-therapy-on-scapular-position-and-motion-in-individuals-with-scapular-dyskinesis-systematic-review-protocol
#18
Afsun Nodehi Moghadam, Kianoush Abdi, Mohsen Shati, Shohreh Noorizadeh Dehkordi, Abbas Ali Keshtkar, Zahra Mosallanezhad
BACKGROUND: Scapular dyskinesis is an alteration in normal scapular position and motion. Some researchers believe that altered kinematics of the scapula subsequent to dysfunction or weakness of scapular stabilizing muscles contributes to impingement syndrome. Scapular muscle exercises are included in the rehabilitation of patients with subacromial impingement syndrome and scapular dyskinesis because the muscular system is one of the major contributors of scapular positioning both at rest and during shoulder movement, but there is considerable uncertainty relating to the relative effectiveness of such approaches on changing scapular position and motion...
December 13, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/29235939/are-shoulder-counter-rotation-and-hip-shoulder-separation-angle-representative-metrics-of-three-dimensional-spinal-kinematics-in-cricket-fast-bowling
#19
Billy Senington, Raymond Y Lee, Jonathan Mark Williams
This study aimed to investigate the relationship between shoulder counter-rotation (SCR), hip shoulder separation (HSS) and three-dimensional spinal kinematics during fast bowling in cricket. Thirty five elite male fast bowlers were analysed using three-dimensional inertial sensors on the spine. Lumbar, thoracic and thoracolumbar kinematics were determined during the delivery stride. Spearman's pairwise correlations displayed significant associations between SCR, thoracic and thoracolumbar lateral flexion between the back foot impact and max contralateral rotation phase of the delivery stride (rs = -...
December 13, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29229406/validation-of-single-plane-fluoroscopy-and-2d-3d-shape-matching-for-quantifying-shoulder-complex-kinematics
#20
Rebekah L Lawrence, Arin M Ellingson, Paula M Ludewig
Fluoroscopy and 2D/3D shape-matching has emerged as the standard for non-invasively quantifying kinematics. However, its accuracy has not been well established for the shoulder complex when using single-plane fluoroscopy. The purpose of this study was to determine the accuracy of single-plane fluoroscopy and 2D/3D shape-matching for quantifying full shoulder complex kinematics. Tantalum markers were implanted into the clavicle, humerus, and scapula of four cadaveric shoulders. Biplane radiographs were obtained with the shoulder in five humerothoracic elevation positions (arm at the side, 30°, 60°, 90°, maximum)...
December 8, 2017: Medical Engineering & Physics
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