Improvements in measuring shoulder joint kinematics

Jackson, Monique; Michaud, Benjamin; Tétreault, Patrice; Begon, Mickaël

doi:10.1016/j.jbiomech.2012.05.042

Cited by 72 publications

(74 citation statements)

References 13 publications

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“…The participants were equipped with 43 reflective markers (including 35 technical markers for the multibody optimization) put on their thorax and upper limb skin in line with the Jackson et al (2012) marker set. Two additional geometrical markers were placed on the seventh cervical vertebra and on the most lateral point of the thorax to build geometrical ellipsoids (Bolsterlee et al 2014;Prinold and Bull 2014).…”

Section: Methodsmentioning

confidence: 99%

“…As recommended by Michaud et al (2016), sternoclavicular, acromioclavicular and glenohumeral joint centres were located using anatomical or predictive methods. Locations of joint centres and anatomical makers served to define joint coordinate systems of the segements in the anatomical pose position (Jackson et al 2012). Six kinematic models were built (Table 1).…”

Section: Kinematic Chainsmentioning

confidence: 99%

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Scapular kinematic reconstruction – segmental optimization, multibody optimization with open-loop or closed-loop chains: which one should be preferred?

Michaud

Duprey

Begon

2017

International Biomechanics

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Several numerical approaches have been developed to address the soft tissue artefact, such as the segmental optimization and multibody kinematics optimizations using either open-loop or closed-loop chains. However, it is still not clear which method is the most efficient for scapular kinematics reconstruction. In this study, six kinematic models were compared to a silver standard, i.e. a scapula palpator, during a series of 55 postures with maximal amplitudes of both the arm and scapula performed by 15 subjects. The most accurate approaches were the multibody optimization with a closed-loop chain and the segmental optimization. They provided averaged scapula misorientations of 14.9 ± 6.7° and 16 ± 7.1, respectively. Regarding the closed-loop chain integrating a point-to-ellipsoid scapulothoracic joint, the ellipsoid providing the most accurate results was a thorax-size ellipsoid fitting the area browsed by the scapula. Eventually, considering the high implementation costs of a multibody kinematics optimization, the segmental optimization could be considered as appropriate for scapular kinematics reconstruction.

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Section: Methodsmentioning

confidence: 99%

Section: Kinematic Chainsmentioning

confidence: 99%

Scapular kinematic reconstruction – segmental optimization, multibody optimization with open-loop or closed-loop chains: which one should be preferred?

Michaud

Duprey

Begon

2017

International Biomechanics

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“…The limitation of the study is use of the relative movements of the upper extremity segments defined by the markers placed on them. The anatomy and thus movements of the wrist, elbow, and most of all shoulder joints are much more complicated and require much more advanced models and markers set-ups [8]. These models enable much better measurement of real ranges of motion, but their application in clinical settings on quite often greatly affected patients is to date impossible.…”

Section: Discussionmentioning

confidence: 99%

Timing of electromyographic activity and ranges of motion during simple motor tasks of upper extremities

Syczewska

Krawczyk

Szczerbik

2017

Biomedical Human Kinetics

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SummaryStudy aim: Improvement of the upper extremities' performance is one of the key aims in the rehabilitation process. In order to achieve high effectiveness of this process the amount of functional improvement achieved by a patient during the therapy needs to be assessed. The aim of this study was to obtain electromyographic (EMG) activity profiles of the upper extremity muscles during execution of simple tasks in healthy subjects. Additionally the ranges of wrist, elbow and shoulder joints were measured and reported during performed trials. The second aim was to determine whether the movement execution and ranges of movements and muscular activity depend on age. Material and methods: Twenty-eight healthy adults, age range 21 to 65 years old, participated in the study. Surface electrodes were placed bilaterally on 7 upper extremity muscles. To obtain information about the beginning and end of the movement task and ranges of upper extremity joints, 13 markers were placed on the elbows and wrists of both upper extremities. The movements of the segments were calculated (distal vs proximal) in five simple functional tasks (each task involved only one joint), performed while sitting. Kinematic data were collected by the VICON 460 system, and electromyographic data with the Motion Lab EMG system. Results: Charts of timing of EMG activity of the upper extremity muscles together with ranges of upper extremity joint motion were obtained. Conclusion:The results show that the number of muscles activated and the time (or percentage) of the task during which they are active depend on the type of the task and age. These data can be used as a reference in evaluation of functional deficits of patients.

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“…The joint kinematics reconstruction was achieved in accordance with the kinematic chain defined in the Jackson et al 37 model to improve joint kinematics based on ball-andsocket joints and marker redundancy ( Figure 1). A kinematic chain imposes constraints on the motions at joints with 3 degrees of freedom and no translation, which has been shown to overcome the problem of apparent joint dislocation.…”

Section: Kinematics Reconstructionmentioning

confidence: 99%

Shoulder Coordination During Full-Can and Empty-Can Rehabilitation Exercises

Robert-Lachaîne

Allard

Gobout

et al. 2015

Journal of Athletic Training

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Context:Supraspinatus tear is a common rotator cuff injury. During rehabilitation, debate persists regarding the most appropriate exercises. Whereas shoulder coordination is part of normal arm function, it has been infrequently considered in the context of exercise selection.Objective: To assess shoulder-motion coordination during 2 common supraspinatus rehabilitation exercises and to characterize load and motion-direction influences on shoulder coordination.Design: Descriptive laboratory study.Setting: Motion-analysis laboratory. Patient or Other Participants: Fifteen asymptomatic righthand-dominant men (age ¼ 26 6 4 years, height ¼ 1.77 6 0.06 m, mass ¼ 74.3 6 7.7 kg).Intervention(s): Full-can and empty-can exercises with and without a 2.27-kg load.Main Outcome Measure(s): We recorded motion with an optoelectronic system. Scapulohumeral rhythm and complete shoulder joint kinematics were calculated to quantify shoulder coordination. The effects of exercise type, load, motion direction, and humerothoracic-elevation angle on the scapulohumeral rhythm and shoulder-joint angles were assessed.Results:We observed multivariate interactions between exercise type and humerothoracic elevation and between load and humerothoracic elevation. Scapulohumeral rhythm increased by a mean ratio of 0.44 6 0.22 during the full-can exercise, whereas the addition of load increased mean glenohumeral elevation by 48 6 18.Conclusions: The full-can exercise increased the glenohumeral contribution, as hypothesized, and showed normal shoulder coordination. During the empty-can exercise, the increased scapulothoracic contribution was associated with a compensatory pattern that limits the glenohumeral contribution. Using loads during shoulder rehabilitation seems justified because the scapulohumeral rhythm is similar to that of unloaded arm elevation. Finally, motion direction showed a limited effect during the exercises in healthy individuals. Key Words:kinematics, shoulder joint, scapulohumeral rhythm, supraspinatus muscle Key PointsThe full-can exercise increased scapulohumeral rhythm, which was in line with normal shoulder function. The empty-can exercise demonstrated increased scapulothoracic contribution, which is associated with a compensation pattern that limits glenohumeral motion. Handheld load increased glenohumeral elevation in healthy participants. The raising and lowering phases of the exercise resulted in negligible differences in shoulder-joint coordination in healthy individuals.

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Improvements in measuring shoulder joint kinematics

Cited by 72 publications

References 13 publications

Scapular kinematic reconstruction – segmental optimization, multibody optimization with open-loop or closed-loop chains: which one should be preferred?

Scapular kinematic reconstruction – segmental optimization, multibody optimization with open-loop or closed-loop chains: which one should be preferred?

Timing of electromyographic activity and ranges of motion during simple motor tasks of upper extremities

Shoulder Coordination During Full-Can and Empty-Can Rehabilitation Exercises

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