An integrated approach for reconstructing surface models of the proximal femur from sparse input data for surgical navigation

Authors:
Guoyan Zheng;Miguel A. González Ballester
Affiliations:
MEM Research Center, Institute for Surgical Technology and Biomechanics, University of Bern, Bern, Switzerland;MEM Research Center, Institute for Surgical Technology and Biomechanics, University of Bern, Bern, Switzerland
Venue:
ICDHM'07 Proceedings of the 1st international conference on Digital human modeling
Year:
2007

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Abstract

A patient-specific surface model of the proximal femur plays an important role in planning and supporting various computer-assisted surgical procedures including total hip replacement, hip resurfacing, and osteotomy of the proximal femur. The common approach to derive 3D models of the proximal femur is to use imaging techniques such as computed tomography (CT) or magnetic resonance imaging (MRI). However, the high logistic effort, the extra radiation (CT-imaging), and the large quantity of data to be acquired and processed make them less functional. In this paper, we present an integrated approach using a multi-level point distribution model (ML-PDM) to reconstruct a patient-specific model of the proximal femur from intra-operatively available sparse data. Results of experiments performed on dry cadaveric bones using dozens of 3D points are presented, as well as experiments using a limited number of 2D X-ray images, which demonstrate promising accuracy of the present approach.