Teaching Point or Hint:
What is the punctate radiopaque (white) material scattered about the knee?
TITLE: Lipohemarthrosis (s/p BKA for IED & shrapnel injury)
Lateral radiograph of the right knee shows a complex fracture of the distal femur, with cortical disruption of the medial femoral condyle and a 6 mm gap involving the lateral femoral condyle. A joint effusion is noted. The patient is post BKA, with prior surgical changes noted in the proximal tibia and diffuse osteopenia. Heterotopic ossification and shrapnel are seen in the soft tissues.