Surgical treatment for symptomatic non-ossifying fibromas of the lower extremity with calcium sulfate grafts in skeletally immature patients.

CaSPs offer a safe, cheap, convenient alternative to the autograft as an implant substitute that helps regeneration of bone in the defects produced by curettage of large, symptomatic NOFs. Chemical cauterization of bone walls does not interfere with CaSP integration into bone tissue.