Subgroup Analysis
tumor
CAVITY, TUMOR, RECURRENCE, PATHOLOGIC FRACTURE
In an analysis of the subgroup of patients without a prior pathologic fracture, 14% (2) of 14 patients in the bioactive glass group and 50% (5) of 10 patients in the allograft group developed a recurrence (OR for allograft = 6.00, 95% CI = 0.86 to 42, p = 0.09). Similarly, in an analysis of the patients with a prior pathologic fracture, 73% (8) of 11 and 44% (7) of 16, respectively, developed a recurrence (OR for allograft = 0.29, 95% CI = 0.055 to 1.53, p = 0.24).In a second subgroup analysis, the size of the recurrence did not differ between the study groups in the children with ABCs (mean recurrence size, 3.3 versus 2.2 mL, p = 0.43).Video 1 Step-by-step video of the operative technique: Opening a cortical window to the cyst cavity using an osteotome, curettage, high-speed burring, tumor removal, phenol application, tumor volume measurement, filling the cavity with bioactive glass.