Fracture through unicameral bone cyst
Fall during a football match. Left hip pain.
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Fracture of the left proximal femur with displacement and angulation. The underlying bone is not normal and this is therefore a pathological fracture.
The lytic lesion through which the fracture has occurred is a unicameral bone cyst.
1 case question available
To fracture a normal bone in this area would be very unusual in a child of this age. The lytic lesion at the site of fracture is typical for a unicameral bone cyst.
Since the fracture involves both sides of the femur a fallen fragment cannot be relied upon to make the diagnosis.