What abnormalities are demonstrated on this film?
The femora are both bowed and overgrown. In addition, there are multiple transverse dense lines in the metaphyses of the femora and tibia.
What animal-inspired name is given to the dense metaphyseal lines?
What do these lines represent?
They represent growth-arrest and are often seen in patients on bisphosphonate therapy because of the cyclical nature of administration.
There is bowing of both femora which is symmetric. Multiple growth arrest lungs in the femora and tibia.