FIG. 1 Comparison of the contact pressure distributions measured in the intact articulation (first row) with those measured when the intact patella articulates with the femoral components of 5 different component designs used in total knee arthroplasty, for 4 different flexion angles (30°, 60°, 90° and 105°). MG II = Miller/Galante II prosthesis (Zimmer, Warsaw, Ind.), AMK = Anatomic Modular Knee prosthesis (DePuy, Warsaw, Ind.), Ortholoc = Whiteside Ortholoc Modular prosthesis (Wright Medical Technology, Arlington, Tenn.), PFC = press-fit condylar prosthesis (Johnson & Johnson, Warsaw, Ind.) and IB II = Insall–Burstein II prosthesis (Zimmer).