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

Figure 7

Final peg configuration proposed to align the resection device to the desired resection plane: (a) shows the top view of peg configuration, which is aligned (red dot) to the centre of the patella; (b) shows the side view of the equal-length pegs; and (c) shows the patella view, whereby the patellar centre is defined midway between the mediolateral and superoinferior extents. Patellar width averages 46 mm [16].

(a)

(b)

(c)