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Evaluation of musculoskeletal modelling parameters of the shoulder complex during humeral abduction above 90°

  • Based on electromyographic data and force measurements within the shoulder joint, there is an indication that muscle and resulting joint reaction forces keep increasing over an abduction angle of 90°. In inverse dynamics models, no single parameter could be attributed to simulate this force behaviour accordingly. The aim of this work is to implement kinematic, kinetic and muscle model modifications to an existing model of the shoulder (AnyBody™) and assess their single and combined effects during abduction up to 140° humeral elevation. The kinematics and the EMG activity of 10 test subjects were measured during humeral abduction. Six modifications were implemented in the model: alternative wrapping of the virtual deltoid muscle elements, utilization of a three element Hill model, strength scaling, motion capture driven clavicle elevation/protraction, translation of the GH joint in dependency of the acting forces and an alteration of the scapula/clavicle rhythm. From the six modifications, 16 different combinations were considered. Parameter combinations with the Hill model changed the resultant GH joint reaction force and led to an increase in force during abduction of the humerus above 90°. Under the premise of muscle activities and forces within the GH joint rising after 90° of humeral abduction, we propose that the Hill type muscle model is a crucial parameter for accurately modelling the shoulder. Furthermore, the outcome of this study indicates that the Hill model induces the co-contraction of the muscles of the shoulder without the need of an additional stability criterion for an inverse dynamics approach.

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Metadaten
Verfasserangaben:Maximilian Aurbach, Jan Spicka, Franz Süß, Sebastian DendorferORCiD
DOI:https://doi.org/10.1016/j.jbiomech.2020.109817
Titel des übergeordneten Werkes (Englisch):Journal of Biomechanics
Verlag:Elsevier
Dokumentart:Artikel aus einer Zeitschrift/Zeitung
Sprache der Veröffentlichung:Englisch
Jahr der Veröffentlichung:2020
Datum der Freischaltung:26.05.2020
Freies Schlagwort / Tag:EMG; Glenohumeral joint reaction force; Muscle model; Musculoskeletal modelling; Shoulder joint
GND-Schlagwort:Schultergelenk; Bewegungsapparat; Biomechanik; Simulation
Jahrgang:106
Ausgabe / Heft:June
Aufsatznummer:109817
Fakultäten / Institute / Einrichtungen:Fakultät Maschinenbau
Regensburg Center of Biomedical Engineering - RCBE
Fakultät Maschinenbau / Labor Biomechanik (LBM)
Begutachtungsstatus:peer-reviewed
Forschungsschwerpunkt:Lebenswissenschaften und Ethik
Lizenz (Deutsch):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG