[Assessment of bone quality--present and future].

Bone quality including "structural property" and "material property" , which is strongly affected by bone remodeling and has an influence on bone biomechanical property. Structural property means macroscopical geometry, bone size, trabecular microstructure, cortical thickness and cortical porosity. Material property means mineralization, crystal size, collagen and microdamage. Although most of them are analyzed in vitro, in the future, noninvasive assessment of bone quality may help to guide therapy of osteoporosis.