Irregular Ossification of the Anterior Aspect of the Lateral Femoral Condyle

Remember not to misdiagnose the normal irregular ossification of the femoral condyles as stage I osteochondral defect, especially when using ultrasound; MR imaging is helpful in distinguishing this normal variant.

 Dynamic ultrasound scan of the anterior aspect of the lateral femoral condyle of a young football player.


Sagittal Ge-Stir and T1 weighted Mri of the same patient (0.3 Tesla). The overlying articular cartilage is intact.