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Abstract #1170

Development of a Novel Combined Tibial and Femoral Bone Registration Method for Reliable Quantification of MR-based Knee Joint Kinematics

Musa Zaid 1 , Drew Lansdown 1 , Karupppasamy Subburaj 2 , C. Benjamin Ma 1 , Richard Souza 2 , and Xiaojuan Li 2

1 Orthopaedic Surgery, University of California San Francisco, San Francisco, California, United States, 2 Radiology and Biomedical Imaging, University of California San Francisco, California, United States

Magnetic resonance imaging is an appealing approach for measuring knee kinematics. We have developed a novel combined tibial and femoral algorithm for determining MR-based knee kinematic measurements. Tibial and femoral coordinate systems were established from bone segmentations and used to establish coordinate systems to measure anterior tibial translation and internal tibial rotation. Using this novel method, knee MR images from five subjects were segmented by two independent researchers. Intra-class correlation coefficient measurements exhibited excellent inter-user and intra-user reliability of this combined registration method over a tibial only based approach.

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