Probe design to robustly locate anatomical features

  • Kevin B. Inkpen
  • Richard J. Emrich
  • Antony J. Hodgson
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1496)


Computer-assisted surgical techniques which seek to avoid relying on CT or MRI scans often require intraoperative location of anatomical features. The conventional optoelectronic probe measures a cloud of points on the feature surface, but the resulting location estimate is subject to bias and variation due both to local deformations in the surface and to measurement noise. We compare three probe designs — the conventional point probe, a flat probe and a V-probe — and show that all exhibit strong directional variability when estimating the centre of a quarter arc. We also show that the V-probe design is superior in tests on a 2D image, reducing the variability in localizing a femoral condyle by 50%.


Total Knee Replacement Probe Design Point Probe Curvature Bisector Flat Probe 
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  1. 1.
    Leitner, F., Picard, F., Minfelde, R., Schulz, H-J., Cinquin P., Saragaglia D.: Computer Assisted Knee Replacement Surgical Total Replacement. In: Troccaz, J., Grimson, E., Mosges, R. (eds): CVRMed-MRCAS ’97. Lecture Notes in Computer Science, Vol. 1205. Springer-Verlag, Berlin Heidelberg New York (1997) 627–638.Google Scholar
  2. 2.
    Kurosawa, H., Walker, PS., Abe, S., Garg, A., Hunter, T.: Geometry and Motion of the Knee for Implant and Orthotic Design. Journal of Biomechanics (1985); 18 (7): 487–499.CrossRefPubMedGoogle Scholar
  3. 3.
    Simon, D.A., Hebert, M., Kanade T.: Techniques for Fast and Accurate Intra-Surgical Registration. In: DiGioia, A.M., Kanade, T.,Taylor, R. (eds.): MRCAS ’94, Vol. 1. Pittsburgh, Pennsylvania. (1994) 90–97.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Kevin B. Inkpen
    • 1
  • Richard J. Emrich
    • 1
  • Antony J. Hodgson
    • 1
  1. 1.Department of Mechanical EngineeringUniversity of British ColumbiaVancouverCanada

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