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Second Grand Challenge Competition to Predict In Vivo Knee Loads

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  • Second Grand Challenge Competition to Predict In Vivo Knee Loads

    An Open Invitation to the Musculoskeletal Modeling Research Community:

    We would like to invite you to participate in the second "Grand Challenge
    Competition to Predict In Vivo Knee Loads" to be held at the 2011 ASME
    Summer Bioengineering on June 22-25 in Farmington, Pennsylvania

    Thanks to funding provided by the National Institute of Biomedical Imaging
    and Bioengineering at the National Institutes of Health, we will be hosting
    the Grand Challenge Competition at the ASME Summer Bioengineering Conference
    for four more years.

    The goal of the competition is to evaluate quantitatively model-based
    estimates of muscle and contact forces in the knee during gait using in vivo
    tibial contact force data collected from subjects implanted with
    force-measuring knee replacements. Competitors will use any musculoskeletal
    (or other) modeling software and methods they desire to estimate medial and
    lateral tibial contact forces for two specified gait trials WITHOUT knowing
    the actual contact force measurements. Data files containing predicted
    medial and lateral contact forces will be submitted with each competition
    abstract. Abstracts will be judged using standard ASME Summer Bioengineering
    Conference criteria along with two additional criteria: Accuracy and
    Novelty. The highest scoring abstracts will be presented in a special
    session at the conference. At the end of the session, the in vivo contact
    force measurements will be revealed, and lessons learned by the competitors
    will be discussed. The winner of the competition will be announced at the
    conference awards ceremony.

    The research team has updated the existing project
    ( to provide all of the necessary
    information and data for the second competition. All data collection and
    distribution have been IRB approved. Some in vivo contact force data are
    included with the data sets to assist competitors in developing their
    musculoskeletal models.

    If you would like to stay informed about the competition, please sign up for
    the "kneeloads-news" mailing list on the competition's project
    (under Advanced->Mailing Lists). You will automatically be asked to join
    this mailing list any time you download data or documents for the
    competition (under Downloads). If you encounter any problems with the data,
    or if you have any questions, we will be using the Public Forum feature of (under Advanced ->Public Forums->open-discussion) as a central
    location for researchers to post their inquiries and for the research team
    to respond.

    Last year, research teams from six countries participated in the
    competition. We hope to have even broader participation for the second
    competition. We look forward to having researchers from around the world
    take our challenge to see how well they can predict in vivo knee loads
    during gait.


    B.J. Fregly, Ph.D., University of Florida

    Darryl D'Lima, M.D., Ph.D., Shiley Center at Scripps Clinic

    Thor Besier, Ph.D., Stanford University

    David Lloyd, Ph.D., University of Western Australia

    Marcus Pandy, Ph.D., University of Melbourne