Med Biol Eng Comput - Development of a comprehensive musculoskeletal model of the shoulder and elbow.

Tópicos

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Resumo

The Delft Shoulder and Elbow Model (DSEM), a musculoskeletal model of the shoulder and elbow has been extensively developed since its introduction in 1994. Extensions cover both model structures and anatomical data focusing on the addition of an elbow part and muscle architecture parameters. The model was also extended with a new inverse-dynamics optimization cost function and combined inverse-forward-dynamics models. This study is an update on the developments of the model over the last decade including a qualitative validation of the different simulation architectures available in the DSEM. To validate the model, a dynamic forward flexion motion was performed by one subject, of which the motion data and surface EMG-signals of 12 superficial muscles were measured. Patterns of the model-predicted relative muscle forces were compared with their normalized EMG-signals. Results showed relatively good agreement between forces and EMG (mean correlation coefficient of 0.66). However, for some cases, no force was predicted while EMG activity had been measured (false-negatives). The DSEM has been used and has the potential to be used in a variety of clinical and biomechanical applications.

Resumo Limpo

delft shoulder elbow model dsem musculoskelet model shoulder elbow extens develop sinc introduct extens cover model structur anatom data focus addit elbow part muscl architectur paramet model also extend new inversedynam optim cost function combin inverseforwarddynam model studi updat develop model last decad includ qualit valid differ simul architectur avail dsem valid model dynam forward flexion motion perform one subject motion data surfac emgsign superfici muscl measur pattern modelpredict relat muscl forc compar normal emgsign result show relat good agreement forc emg mean correl coeffici howev case forc predict emg activ measur falseneg dsem use potenti use varieti clinic biomechan applic

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