http://mysbfiles.stonybrook.edu/~hoon/
For those on the run, here is a snapshot.
HAN YUEN OON
Engineer, Photographer, Musician
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My research is based on the spinal biomechanics and lower back pain (LBP). A cause for LBP is the activation of mechano-nociceptors situated in the lumbar facet joint capsules. These mechanoreceptors and no-ciceptors appear to encode the local stress rather than the local strain during loading. It is infeasible to directly obtain capsule stress in-vivo conditions. However, the finite element method (FEM) provides an accurate approximation of these capsule stresses and strains. This study aims to create a geometrically accurate FEM model of the lumbar FJ, incorporate it into an existing lumbar spine model, and subject it to normal physiological loading conditions. Cadaver spine regions T12-S1 images were obtained and descritized via CT imaging software and then exported into ABAQUS, a finite element solver. To mimic actual invivo conditions, my FE model will include non-linear geometry behavior, accurate material properties and dynamic loading conditions. This study is a joint effort with the University of Toledo and Palmer College.
Current T12-S1 model consisting of enhanced facet
joint geometry and mesh
Improved facet joint mesh (a)
Improved facet joint mesh (b)
