Simple bone cysts. A review of 59 cases with special reference to their treatment.

In a retrospective study, 21 simple bone cysts (SBC) treated by curettage (with or without bone grafting) are compared to 20 SBC treated by intralesional injections of methylprednisolone. Curettage led to 43% favourable results and 29% recurrences. Cortisone injections led to 90% favourable results and 5% recurrences. Combined therapy (curettage and injections) led to results comparable to injections only. In our experience, curettage and hydroxyapatite grafting led to 100% complete healing (only 2 cases). We recommend intralesional methylprednisolone injections because the method is easy, effective and safe.