Figure 3.

Schematic overview of the Burghardt et al. JSW method (13) illustrating the dilation and erosion functions used to close the joint space and subtraction with the original volume to create the joint space mask. Schematic illustration of distance map algorithm with sphere fitting. Red spheres are excluded in SFR and CLG methods. JSW, joint space width; SFR, University of California San Francisco; CLG, University of Calgary.