Avascular necrosis of the femoral epiphysis complicating a minimally displaced fracture of solitary bone cyst of the neck of the femur in a child. A case report.

Reported herein is a rare case of a patient with a pathologic fracture through a cyst in the femoral neck that resulted in avascular necrosis of the femoral epiphysis. This type of necrosis is commonly understood to follow displaced fractures of the femoral neck in children, but has also been reported to follow undisplaced fractures.