Tagged: GPA

What is a Population Average?

A population average merges together several individual specimens to form a consensus of the group being studied. A population average is useful for computing and understanding what “normal” means for a specific group. For example, what is the normal 3D shape of crania, mandible, condyle, femoral head, tibial plateau, etc.

What is joint congruence?

Joint congruence is the measurement of two opposing joint surfaces as they relate to one another considering the 3D shape contour of each bone at their interface. For example, relating the femoral condyle to the tibial plateau or the temperomandibular condyle to the fossa.

The procrustes superimposition method calculates the procrustes average specimen, which removes scale from the specimens. The following covers the options available in Checkpoint’s Shape Analysis tab.  Under “Analysis method”, select “Generalized Procrustes Analysis”.