Fig. 2

Temporal distribution of the low-trauma fractures in the premenopausal osteoporosis group

The fracture onsets are presented separately by 18-month period. Vertebral fractures were the majority of fractures around childbirth (between 5 months before and 12 months after childbirth); however, they were not as frequent in other periods. Conversely, the frequencies of distal radius and sacral fractures were lower around childbirth than in other periods, during which they were common