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Re: A library of orthopaedic prosthetic components?

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  • Re: A library of orthopaedic prosthetic components?

    I strongly agree with Marco.

    It is nice to listen such suggestions that can actually assist in solving
    real practical issues.
    It is for certain that making available older implant CAD files and relevant
    clinical data would make biomechanics research much more effective.

    Any feedback to his questions would also be greatly appreciated.

    Panos Diamantopoulos

    Panos Diamantopoulos
    Application & Development Manager
    Bio-Medical Modelling Unit (BioModel)
    School of Engineering
    University of Sussex
    Brighton BN1 9QT
    Tel: +44 1273 877320
    Fax: +44 1273 877341
    -----Original Message-----
    From: Marco Viceconti
    Date: 11 September 2000 11:41
    Subject: A library of orthopaedic prosthetic components?

    >Messages like to one here below are common on BIOMCH-L. As responsible for
    >the Standardised Femur Program I also frequently receive requests for
    >computer models of joint prostheses for research purposes.
    >Unfortunately, the prosthetic CAD models we use are commonly obtained
    >directly from the manufacturers with a non-disclosure clause. Thus we are
    >not allowed to re-distribute them. While this situation is understandable
    >for the prosthetic designs currently on the market, but I believe we could
    >do much better for those designs that are not used anymore, but for which a
    >large clinical history is available.
    >It would be great if the CAD 3D model of components such as the Howmedica
    >PCA or the original Charnley low-friction hip prostheses were made
    >available to the research community. The same applies to designs
    >considered unsuccessful such as the 3M Capital hip prosthesis.
    >The problem is that I have no idea of how to get them. Why should the
    >companies expose their historical designs? Which advantage would they
    >obtain? I know there are some colleagues working in orthopaedic companies
    >on the BIOMCH-L list. Could they please express their point of view on the
    >In theory we could also consider to recover a sample and then try some
    >reverse engineering. However, we would be never sure it the right design
    >and it is a lot of work anyway. Last, I am not sure you can put on the
    >public domain such reversed model without infringing any law.
    >I would really appreciate any feedback on this matter, which in my opinion
    >could boost the effectiveness of biomechanical studies on the clinical
    >>From: "Andrew W. (Drew) Smith, PhD"
    >>Subject: A 3-D model of the femoral component
    >>Dear friends!
    >>Does anyone arrange me to get where I can find a 3-D model of the femoral
    >>component of TKR (total knee replacement) prosthesis in .DXF, .OBJ, 3DS,
    >>.T3D, .3MF, or .B3D format?
    >>I need these files for FE analysis of stress shielding and remodelling of
    >>trabecular bone around the femoral component. We are trying to approach
    >>differently for this phenomena using "Voxel meshing program".
    >>Any help would be greatly appreciated.
    >>Ye-Yeon, Won., M.D., Ph.D.
    >Laboratorio di Tecnologia Medica tel. 39-051-6366865
    >Istituti Ortopedici Rizzoli fax.
    >via di barbiano 1/10, 40136 - Bologna, Italy
    >Tiger! Tiger! Burning bright in the forest of the night,
    >what immortal hand or eye could frame thy fearful symmetry?
    >Opinions expressed here do not necessarly reflect those of my employer
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