[Pitfalls in bone mineral measurement].

In order to improve the reproducibility of bone mineral measurement, measurement needs to be repeated on the same position of the patients. Although lumbar bone mineral measurement is recommended in post menopausal osteoporosis, peripheral bone mineral reduction may precede lumbar bone mineral reduction in some secondary osteoporosis. The antiresorptive agents increase lumbar or proximal femoral bone mineral density; however, little changes are observed in peripheral bone mineral density by the treatment.