Conclusions
calcification
BONE LESIONS, RECURRENCE
The recurrence rate of benign bone lesions in skeletally immature patients treated with intralesional curettage is high. In the present small randomized trial, we could not identify a difference between bioactive glass and allograft as the filling material after curettage in terms of either the recurrence rate or the size of recurrent lesions. Bioactive glass represents an alternative filling material for pediatric benign bone lesions, despite its 2 unique negative aspects: nonphysiologic calcification on follow-up radiographs and difficult removal during revision surgery.