Shape Analysis of the Patellar Bone Surface and Cutting Plane for Knee Replacement Surgery

Figure 4

Patellae with the most and least consistently drawn sagittal resection lines. The four colours represent the four different surgeons, with three repetitions each. The solid black line represents the corresponding peg plane defined later (Section 3.2). The thickness is unimportant in the representation since this is decided intraoperatively based on the patellar thickness and component thickness.

(a)

(b)