Abstract
A case of a 12-year-old boy with bone necrosis in the distal metaphysic of the right femur is reported. He was admitted to our hospital with chief complaint of pain in the right knee.
Roentgenograms of the right distal metaphysis of the femur revealed irregulary mixed lesion of the sclerotic and lytic shadow. Angiography showed no malignant finding. The biopsy was performed for the purpose of the histological diagnosis. Microscopic examination revealed necrosis of cancellous bone with diffuse granulation tissue surrounding it.
As he had no episode suspected cause of bone necrosis, we diagnosed this case as idiopathic bone necrosis.
