Figure 10. Variations in signal intensity of repair tissue on GRE (8.8/4.2; flip angle, 60°) images obtained in three patients after autologous chondrocyte implantation at the right femoral trochlea. Sagittal image obtained in a 40-year-old man 11 months after implantation shows hyperintense signal with perfect depth of cartilage filling at the repair site (arrow). F = femur, P = patella, T = tibia.