(A) Association between radius and tibia total vBMD, tibia Ct Th, and FN aBMD and the risk of vertebral fracture in the whole group; in the subgroup of patients who are antiresorptive treatment naive; in the subgroups of patients according to osteoporotic status on central DXA (≥1 T-score <–2.5 SD at the lumbar spine, total hip, or FN) and FRAX-BMD intervention threshold for age (10-y fracture probability >10%). The P value of the interaction between groups is indicated. (B) Association between radius and tibia total vBMD, tibia Ct Th, and FN aBMD and various fracture outcomes: risk of single vertebral fracture in the upper panel; risk of multiple vertebral fracture in the lower panel. The P value of the difference between the outcomes is indicated.