Biomechanical simulation of contact pressure on acetabular cartilage.

<p>(A) Surface models of a dysplastic hip; (B) Volume meshes of a dysplastic hip. (C) Surface models for a planned situation after acetabulum fragment reorientation. (D) Volume meshes for the planned situation. (E) Boundary conditions and loading for biomechanical simulation. (F) Coarse meshes for bone models, and refined meshes for cartilages.</p

The schematic workflow of computer assisted planning of PAO with biomechanical optimization.

<p>(A) Computer assisted morphology based PAO planning. Virtual osteotomy operation is done with a sphere, whose radius and position can be interactively adjusted, and virtual reorientation operation is done by interactively adjusting anteversion and inclination angle of the acetabulum fragment. (B) Biomechanical optimization. (C) the pre-operative planning output.</p

Contact pressure distribution obtained by using two different cartilage models at different acetabular reorientation position.

<p>Contact pressure distribution obtained by using two different cartilage models at different acetabular reorientation position.</p