Figure 1From: How reliable is MRI in diagnosing cartilaginous lesions in patients with first and recurrent lateral patellar dislocations? Axial PD-weighted TSE MRI of a 28-year-old male with a first LPD. MRI shows bone marrow edema involving the anterolateral femoral condyle (black arrow). At the central dome of the retropatellar articular surface, a full-thickness defect of the cartilage with denudation of the bone is visible. This finding is defined as a grade 4 disorder (white arrow).Back to article page