Fig. 3.

MR imaging of the left knee was performed for a patient with known Osgood-Schlatter disease. (a) Sagittal proton density-weighted turbo spin echo sequence shows bony fragmentation at the tibial tuberosity adjacent to the distal insertion site of the patellar ligament (arrow). (b) Sagittal proton density-weighted turbo spin echo fat-saturated sequence shows bone oedema and cyst formation at the tibial tuberosity (arrow). (c) Sagittal proton density-weighted turbo spin echo fat-saturated sequence done two years later shows resolution of marrow oedema but interval development of intraosseous cystic changes within a bony fragment (arrow) adjacent to the tibial tuberosity.