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Subject-specific and function-specific applicability of a hand-forearm musculoskeletal model
, Article Biomedical Engineering - Applications, Basis and Communications ; Volume 27, Issue 6 , 2015 ; 10162372 (ISSN) ; Farahmand, F ; Fateh, H. R ; Forogh, B ; Sharif University of Technology
World Scientific Publishing Co. Pte Ltd
2015
Abstract
There is ambiguity on the quantitative validity of the predictions revealed by musculoskeletal models for muscle forces. This study investigated the consistency between the predictions of a musculoskeletal model of the upper limb and the experimental data for a number of different subjects and functional tasks. Six normal subjects performed isokinetic eccentric or isotonic concentric contraction tests of the wrist muscles in well controlled conditions, using a robotic apparatus, and the net joint torque and angular velocities, as well as the surface electromyograms (EMG) signals of the muscles, were recorded. The experiments were then simulated using a parametric musculoskeletal model of...
A Musculoskeletal Model of the Hand and Forearm to Simulate the Rehabilitation Process of Stroke Survivors
, M.Sc. Thesis Sharif University of Technology ; Farahmand, Farzam (Supervisor) ; Saadat Foumani, Mahmoud (Supervisor) ; Forough, Bijan (Supervisor)
Abstract
Spasticity is a common phenomenon following stroke, which causes increase in muscle resistance to imposed movements. Most of the clinical measurements used by physiotherapists to evaluate spasticity are qualitative. Consequently, the reported results are subjective. The objective of this study was to develop a musculoskeletal model of the upper limb to simulate spasticity of muscles activating in wrist flexion-extension. Subjects in two groups of normal and stroke survivors participated in this study. Six normal subjects and three hemiplegia patients were exercised by the robotic instrument. Simultaneously, the resistive moment, the wrist joint position and the EMG of muscles were recorded....