Geometry parameters for musculoskeletal modelling of the shoulder system

Helm, F.C.T. van der; Veeger, H.E.J.; Pronk, G.M.; Woude, L.H.V. van der; Rozendal, R. H.

doi:10.1016/0021-9290(92)90270-b

Cited by 220 publications

(116 citation statements)

References 15 publications

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“…Pressures in the subacromial bursa were recorded in human volunteers by Sigholm et al (1988), but not in regard to suprapinatus muscle function. The development of computer models of the shoulder has only just begun (Wood et al 1989, Karlsson and Peterson 1992, Van der Helm et al 1992.…”

Section: Discussionmentioning

confidence: 99%

Function of the supraspinatus muscle: Abduction of the humerus studied in cadavers

Wuelker

Plitz

Roetman

et al. 1994

SORT

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Section: Discussionmentioning

confidence: 99%

Function of the supraspinatus muscle: Abduction of the humerus studied in cadavers

Wuelker

Plitz

Roetman

et al. 1994

SORT

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“…The scapulohumeral epiphyseal rotational center was appropriately estimated because use of measurement devices for determining the residual error of spherical surface regression was validated within the range permitted by anatomical findings. The difference in radius of curvature between the epiphysis and the glenoid measures 5-6 mm and is influenced by changes in the external forces (Van der Helm et al, 1992). Although Bao and Willems (1999) have claimed to have incorporated counter-measures in their originally improvised model, the results proved otherwise.…”

Section: Discussionmentioning

confidence: 99%

“…Numerical shoulder complex joint models are not only complicated but many are also restricted by subsystems monitoring planar movements of the scapular plane (Poppen and Walker, 1978;Karlsson and Peterson, 1992). In numerical models, the fundamental approach can be conclusively constructed based on the anatomical data such as mathematical description of musculoskeletal systems (Högfors et al, 1987;Van der Helm FCT, 1992) and scapulohumeral rhythm on the scapular plane (Högfors et al, 1991). In a model designed by Karlsson and Peterson (1992) for mechanical estimation of the shoulder, and another introduced by Högfors et al (1995) to furnish prediction consistency with 46 integrated components besides the versatile innovation that affords >30 parameters plus the intricate salute movement involving 5 degree of freedom (DOF) structural orientation (Yamaguchi et al, 1995), the global movements are simple and restrictive and computation of data can be time-consuming and cumbersome.…”

Section: Introductionmentioning

confidence: 99%

“…Although attention has been focused on the faithful expression of anatomical aspects by numerical models, major interests are highly concentrated on the actual measurements derived in shoulder models in expressing skeletal movements with consistency ( Van der Helm FCT et al, 1992;Debski et al, 1995;Wang et al, 1998;Maskers et al, 1998a,b;Bao and Willems, 1999;Maskers et al, 1999;Engin and Peindl, 1987a, b).…”

Section: Introductionmentioning

confidence: 99%

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Development and Evaluation of the Measurement System for the Human Shoulder Joint Based on the 6 DOF Kinematic Modelling

Shimomura

Iwanaga

Harada

et al. 2000

J. Physiol. Anthropol.

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Abstract. Although numerical models on the shoulder complex joint are currently available, many are impractical because of the procedural complexity coupled with limited and mere simple simulations. The present study defined the clavicle-scapula system as the "base of the humerus" in determining the position of proximal head of humerus, rendering conclusive innovation of a six degree of freedom (DOF) shoulder complex joint model. Furthermore, a complete measurement system where evaluation by calibrating the actual values via the use of an electromagnetic tracking device (ETD) was developed based on the innovated model. The special calibration method using optimizing calculation to work out the rotational center of humerus was employed and actually tested if the theoretical consideration was practically available. As a result of accuracy check experiments, the measurement error was defined within 2-3 mm, indicating sufficient accuracy in studies for human movement. Our findings strongly advocate that the benefit of this novel measurement system would contribute to studies related to shoulder movements in physiological anthropology.

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“…The experiment was numerically simulated, using the Delft Shoulder and Elbow Model (DSEM) with both a linear and an energy related cost function [19,[22][23][24]. We used the PA, i.e.…”

Section: Introductionmentioning

confidence: 99%

Arm load magnitude affects selective shoulder muscle activation

Steenbrink

Meskers

Vliet

et al. 2009

Med Biol Eng Comput

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For isometric tasks, shoulder muscle forces are assumed to scale linearly with the external arm load magnitude, i.e., muscle force ratios are constant. Inverse dynamic modeling generally predicts such linear scaling behavior, with a critical role for the arbitrary load sharing criteria, i.e., the ''cost function''. We tested the linearity of the relation between external load magnitude exerted on the humerus and shoulder muscle activation. Six isometric force levels ranging from 17 to 100% of maximal arm force were exerted in 24 directions in a plane perpendicular to the longitudinal axis of the humerus. The direction of maximum muscle activation, the experimentally observed so called Principal Action (PA), was determined for each force magnitude in 12 healthy subjects. This experiment was also simulated with the Delft Shoulder and Elbow Model (DSEM) using two cost functions: (1) minimizing muscle stress and (2) a compound, energy related cost function. PA, both experimental (PA exp ) and simulated (PA sim ), was expected not to change with arm forces magnitudes. PA exp of the mm. trapezius pars descendens, deltoideus pars medialis and teres major changed substantially as a function of external force magnitude, indicating external load dependency of shoulder muscle activation. In DSEM simulations, using the stress cost function, small non-linearities in the muscle forceexternal load dependency were observed, originating from gravitational forces working on clavicular and scapular bone masses. More pronounced non-linearities were introduced by using the compound energy related cost function, but no similarity was observed between PA exp and PA sim .

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Geometry parameters for musculoskeletal modelling of the shoulder system

Cited by 220 publications

References 15 publications

Function of the supraspinatus muscle: Abduction of the humerus studied in cadavers

Function of the supraspinatus muscle: Abduction of the humerus studied in cadavers

Development and Evaluation of the Measurement System for the Human Shoulder Joint Based on the 6 DOF Kinematic Modelling

Arm load magnitude affects selective shoulder muscle activation

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