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Model

Model. Labrum Material Properties – Linear Poroelastic, transversely isotropic, strain dependent permeability. Cartilage Material Properties – Linear Poroelastic, isotropic, and strain dependent permeability. Steps, Loads, and BCs.

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Model

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Presentation Transcript

  1. Model

  2. Labrum Material Properties – Linear Poroelastic, transversely isotropic, strain dependent permeability

  3. Cartilage Material Properties – Linear Poroelastic, isotropic, and strain dependent permeability

  4. Steps, Loads, and BCs

  5. Mesh – CAX4P, axisymmetric bilinear pore and stress 4-noded linear quad element Resected Labrum Intact Labrum

  6. Results

  7. Contact Stresses on the Femoral Cartilage for Both Cases (t=0 s P=190 lbs) Resected Labrum Intact Labrum

  8. Fluid Velocity Vectors for Both Cases (t=100s and P=190 lbs) Resected Labrum Intact Labrum

  9. Maximum In-Plane True Strain for Both Cases (t=0 sec and P=190 lbs) Resected Labrum Intact Labrum

  10. Problems

  11. BCs Causing Stress Concentrations and Excessive Distortion – Will prevent application of 600 lb Load (4 Times Bodyweight which is a typical joint load)

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