Comparison of Two Methods for Functional Knee Axis Determination: Mri Validation and Effect on Knee Joint Kinematics during Isokinetic Dynamometry

نویسندگان

  • Anke Van Campen
  • Friedl De Groote
  • Lode Bosmans
  • Lennart Scheys
  • Ilse Jonkers
  • Joris De Schutter
چکیده

This paper compares two methods proposed in literature [1,2] to calculate the functional knee axis of rotation (fAoR). Calculations are based on 3D motion data based on data during dynamometer processed using Kalman Smoothing [3]. fAoRs are validated with equivalent axes (EA) based on static MR-imaging data. Both methods are combined with a knee motion model (KMY) [4], widely used in the study of human motion. We quantified the effect of different axes on knee joint kinematics, at one hand the axes based on human motion trajectories, i.e. the fAoRs and the EA, at the other hand commonly used axes based on bone geometry, namely the transepicondylar axis (EPI) and the geometric center axis (GEO). KS was used to estimate generalized coordinates.

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تاریخ انتشار 2011