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Combined MR imaging towards subject-specific knee contact analysis

By Bailang Chen, Tryphon Lambrou, Amaka Offiah, Martin Fry and Andrew Todd-Pokropek

Abstract

A combined magnetic resonance (MR) imaging method has been proposed to investigate individual's knee functionality quantitatively under weight-bearing condition. High resolution MR data were acquired first to reconstruct the subject-specific anatomical model. A dynamic MR acquisition was obtained afterwards to record the motion of knee joint. A tri-rigid registration was applied to retrieve the knee joint motion, leading to a 12 degree-of-freedom (DoF) knee functional model. Using this model, the tibiofemoral contact mechanism was studied and analysed in both 2D and 3D. A mathematical definition of contact points of cartilage surfaces is given by modelling these surfaces as manifolds. It is believed that such subject-specific motion of contact points on cartilage surfaces of femur and two tibia plateaus can provide valuable insights for clinical applications such as knee replacement surgery

Topics: F350 Medical Physics, G740 Computer Vision
Publisher: 'Springer Science and Business Media LLC'
Year: 2011
DOI identifier: 10.1007/s00371-010-0535-x
OAI identifier: oai:eprints.lincoln.ac.uk:7122
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