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Muscles Contributing to Flexion/Extension of the Elbow

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  • Muscles Contributing to Flexion/Extension of the Elbow

    Hello. We are a group of students at LeTourneau University in Longview, Texas
    working on a senior design biomedical engineering project, focusing on the
    elbow joint. We are looking at the correlation between the EMG signals
    produced by the brain and the motion performed by the arm. Last year, we built
    a 2 degree of freedom model with four muscles. The model used the EMG signals
    produced by a test subject to produce real time movement of the model arm.
    This year we are extending our model to include 8 muscles. The muscles we
    looking at using are the bicep brachii (BRI), brachialis (BRA), brachioradialis
    (BRD), tricep brachii (TRI), pronator teres (PT), extensor carpi radialis
    brevis and longus (ECRB, ECRL), flexor digitorum profundus (FDP), and flexor
    digitorum superficialis (FDS). Experimentally, we are collecting the EMG
    signals from these muscles. These signals will eventually be put into an
    optimal control program. For computational putposes, we need to know the
    moment arms of all these muscles around the elbow joint. So far we have found
    moment arms of the larger muscles (BIC, BRA, BRD, PT, TRI, and ECRL), but
    cannot find the affect on the elbow joint of the other muscles in the forearm.

    Is this information available? If so, where would I find it?

    Thanks so much for your help!
    Intelligent Prosthetic Arm
    Team

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