Conclusion BUA and SOS and STI decreased at calcaneus in the elderly people,the sort was STI>BUA>SOS.

• 两组老年人的骨质疏松检出率在 SOS最低，BUA和 STI相近。 结论老年人跟骨质量显著下降，但下降顺序为 STI >BUA >SOS。