Fig. 2

Distribution of single and multiple osteoporotic vertebral compression fractures. The 1530 fractured vertebrae from 1182 patients were unevenly located into thoracic (T1–T9), thoracolumbar (T10–L2), and lumbar (L3–L5) spine. L1, T12, and L2 were the three most frequently fractured vertebra in both single and multiple osteoporotic vertebral compression fractures. Multiple osteoporotic vertebral compression fractures involved more vertebra in lumbar and thoracic spine