Fig. 4.

Radiography and MR imaging were performed for a patient with Sinding-Larsen-Johansson disease. (a) Lateral radiograph shows ossification within the proximal patellar tendon adjacent to the inferior pole of the patella (arrow). No donor site is seen at the inferior pole of the patella. (b) Sagittal proton density-weighted turbo fat-saturated sequence of the same patient shows ossific fragments at the inferior pole of the patella (arrow). Minimal oedema is noted within the ossific fragments and adjacent patella.