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New Standardized Femur Announcement

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  • New Standardized Femur Announcement

    Dear Colleagues:

    In September 1995 we started a service project entitled "Standardized
    Femur Program" which made available via Internet a 3D solid model of a
    femur. Here you can find the original launch message on BIOMCH-L:
    or the official announcement in: Viceconti, M., Casali M., Massari B.,
    Cristofolini, L., Bassini S. and Toni, A., The "Standardized femur
    program". Proposal for a reference geometry to be used for the creation of
    finite element models of the femur, J. Biomech., 1996a, Vol. 29, 1241.

    This voluntary program was quite successful; at the date we have released
    82 licenses to public and private research institutions all around the
    world. However, since its start the program was afflicted by a common
    problem: translation of complex 3D geometry between different CAE programs
    does not work very well. As expected many of our users had problem to
    import our IGES files in their CAD of FEA programs. Some time ago we
    started to analyse the reasons of such problems and found the following
    motivations: a) IGES translation not always work as expected; b) the way we
    had modelled the femur presented some topological singularities.

    We re-created the solid model to remove those singularities. Since 1995 we
    had learned some new tricks and we used all them in this new model (for
    details on the modelling procedure and on its effect on the accuracy, look
    for the soon (right, JM?) to be published proceedings: Viceconti M.,
    Zannoni C., Baruffaldi F., Pierotti L., Toni A. and Cappello A. CT-scan
    data acquisition to generate biomechanical models of bone structures. In:
    Computer Methods in Biomechanics and Biomedical Engineering, Vol II, edited
    by Middleton J. and Smith N. Amsterdam: Gordon and Breach, 1997a, in

    This is to announce our new creature. The new model is exactly the same
    thing of the old one only it is more accurate and it should be easier to
    import in most systems. We already had reports of successful imports in

    The access point is our new web site:

    If you are a new user go to the page a follow the instructions. If you
    were already registered in the old program, we would like to have a feed
    back from you. Thus please reply to the few questions here below and we
    shall pass your old logon on the new archive so you can use the old
    USER/PASSWD couple to download the new model.


    Marco Viceconti
    Laboratorio di Tecnologia dei Materiali
    Istituti Ortopedici Rizzoli

    ************************************************** *********************


    for which type of modelling did you intended to use the SFP model (FEA,
    CAD, etc.)?

    In which type of application (prosthetic design, orthop. Biomechanics, etc.)?

    after you received you passwd did you successfully download the model file?

    if yes, did you were able to import the file in your program of choice?

    which program is it?

    did you complete you modelling activity (i.e. did you successfully mesh it)?

    did you correlate you results with experimental measurements reported for
    the Composite bone analogue from which the SFP model was derived?

    did you submitted reports, papers, abstracts of presented at congresses
    results obtained using the SFP model?

    If yes, please report the full reference

    are you willing to made available to us pictures or other visuals to
    document you particular use of the SFP model?

    Are you planning to download the new model?

    Thanks a lot for your time and attention. Please reply to

    Laboratorio di Tecnologia dei Materiali tel. 39-51-6366865
    Istituti Ortopedici Rizzoli fax. 39-51-6366863
    via di barbiano 1/10, 40136 - Bologna, Italy

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