Unicameral bone cyst (UBC) is the most common benign lytic ... The fracture risk was significantly higher in the humerus than other bones. In multivariate analysis, ballooning of bone, cyst ...

Previous reports indicated that high cyst index (area of the cyst/diaphysis diameter 2), [5] high percent of bone occupied by the cyst in the transverse plane, [6] thin cortical thickness ...