Complications of patellar resurfacing depend largely on technique.
Patellar preparation is only one element of the technique.
Correct implantation can be obtained when soft tissues are equilibrated previously to sectioning, patellar cut is parallel to the prosthetic trochlea, the patellar is centered in relation to the center of the trochlea, and when thickness and height of the patella are maintained. Knee arthroplasty - Patellar resurfacing Introduction Complications of patellar resurfacing depend to a large extent upon technique. There are many possible causes of these complications, and patellar preparation is only one element of the technique. Rotation of the femoral and tibial component is critically important to patellar tracking. Neutral or external rotation of the tibial component in relation to the tibia decreases the Q angle and assists in the tracking of the patella.