Patellar tendon rupture with superior patellar dislocation on knee radiograph and magnetic resonance imaging

A lateral radiograph of the knee (A) shows superior dislocation of the patella (arrowhead) and soft tissue swelling below the patella (arrow). A T2 weighted magnetic resonance image in sagittal projection (B) shows rupture of the patella tendon (between arrows). There is fluid accumulation at the site of the tear (arrowhead). The patient is a 42-year-old male.