Two Cases of Inferior Dislocation of the Patella with Impaction into the Femoral Trochlea of Osteophytes on the Superior Pole of the Patella
Figure 1
(a) Plain frontal radiography: an intra-articular fracture (arrow) is evident from the condylar fossa to the lateral condyle of the femur. (b) Plain lateral radiography: the patella is dislocated inferiorly. (c) Plain radiography after manual reduction: the remaining osteophyte and a floating bone fragment are visible (arrow).