The treatment of unicameral or solitary bone cysts by the injection of corticosteroids.

Methylprednisolone acetate injections into bone cysts are as effective a treatment as curettement and packing. More than one injection may be necessary since recurrences have been seen in half the cases treated with a single injection. Fracture of the cystic part may occur before or after injection if bony filling has not taken place. The fracture may be serious if it involves the neck of the femur. The method is safe and does not result in an unsightly scar. Solitary eosinophilic granulomata of bone also reportedly respond positively to direct injections fo methylprednisolone into the lesion by signs of healing and with relief of pain.