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

Figure 1

In TKA, the arthritic surfaces of the femur, tibia, and patella are replaced with artificial components to reduce pain and improve function. The patella is normally cut “parallel” to the anterior (front) surface. Holes are then drilled into the flat cut surface to insert the patellar component. An incorrect cut of the patella can result in postoperative pain and complications.