Table 2.

Mean three-dimensional deviations between geometries within regions of the articular surface in which wear is typically found

Geometry comparison	CR (microns)	PS (microns)
Between individual inserts	−10.4 ± 9.4	9.7 ± 6.4
Averaged insert versus individual inserts	1.4 ± 2.0	−0.4 ± 1.9
CAD model versus individual inserts	−25.7 ± 13.1	−36.8 ± 31.4
Scaled CAD model versus individual inserts	−14.4 ± 11.8	−36.1 ± 30.9

CR = cruciate-retaining; PS = posterior-stabilized; CAD = computer-aided design.