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Scaling and kinematics optimisation of the scapula and thorax in upper limb musculoskeletal models.

Prinold JA, Bull AM - J Biomech (2014)

Bottom Line: These rely on thorax scaling to effectively define the scapula's path but do not consider the area underneath the scapula in scaling, and assume a fixed conoid ligament length.The scapula and clavicle kinematics are optimised with the constraint that the scapula medial border does not penetrate the thorax.This method is simulated in the UK National Shoulder Model and compared to four other methods, including the standard technique, during three pull-up techniques (n=11).

View Article: PubMed Central - PubMed

Affiliation: Department of Bioengineering, Imperial College London, London SW7 2AZ, UK.

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Separation between ellipse representing the STGP and the (a) inferior angle of the scapula and (b) trigonum spinae during the wide motion: using the PCC method of kinematics optimization. The rest position of the two landmarks is shown as the measured separation distances at a position of rest, with the arms by the side and no load on the hands. The grey area represents the positive and negative standard deviation around the mean (black line). The separations presented are the mean values during the wide pull-ups, but should be considered representative of those seen in the two other pull-up tasks.
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f0020: Separation between ellipse representing the STGP and the (a) inferior angle of the scapula and (b) trigonum spinae during the wide motion: using the PCC method of kinematics optimization. The rest position of the two landmarks is shown as the measured separation distances at a position of rest, with the arms by the side and no load on the hands. The grey area represents the positive and negative standard deviation around the mean (black line). The separations presented are the mean values during the wide pull-ups, but should be considered representative of those seen in the two other pull-up tasks.

Mentions: The distance between the bony landmarks on the scapula medial border and the ellipse representing the STGP are of a similar order to the landmarks׳ resting distances, although the TS distance can be up to twice the resting distance (Fig. 4).


Scaling and kinematics optimisation of the scapula and thorax in upper limb musculoskeletal models.

Prinold JA, Bull AM - J Biomech (2014)

Separation between ellipse representing the STGP and the (a) inferior angle of the scapula and (b) trigonum spinae during the wide motion: using the PCC method of kinematics optimization. The rest position of the two landmarks is shown as the measured separation distances at a position of rest, with the arms by the side and no load on the hands. The grey area represents the positive and negative standard deviation around the mean (black line). The separations presented are the mean values during the wide pull-ups, but should be considered representative of those seen in the two other pull-up tasks.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4150986&req=5

f0020: Separation between ellipse representing the STGP and the (a) inferior angle of the scapula and (b) trigonum spinae during the wide motion: using the PCC method of kinematics optimization. The rest position of the two landmarks is shown as the measured separation distances at a position of rest, with the arms by the side and no load on the hands. The grey area represents the positive and negative standard deviation around the mean (black line). The separations presented are the mean values during the wide pull-ups, but should be considered representative of those seen in the two other pull-up tasks.
Mentions: The distance between the bony landmarks on the scapula medial border and the ellipse representing the STGP are of a similar order to the landmarks׳ resting distances, although the TS distance can be up to twice the resting distance (Fig. 4).

Bottom Line: These rely on thorax scaling to effectively define the scapula's path but do not consider the area underneath the scapula in scaling, and assume a fixed conoid ligament length.The scapula and clavicle kinematics are optimised with the constraint that the scapula medial border does not penetrate the thorax.This method is simulated in the UK National Shoulder Model and compared to four other methods, including the standard technique, during three pull-up techniques (n=11).

View Article: PubMed Central - PubMed

Affiliation: Department of Bioengineering, Imperial College London, London SW7 2AZ, UK.

Show MeSH
Related in: MedlinePlus