The estimation of the cross-sectional area of the ulna and radius.
D015502:Absorptiometry, Photon; D006801:Humans; D008433:Mathematics; D010024:Osteoporosis / Q000175:diagnosis; D011884:Radius / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D014457:Ulna / Q000033:anatomy & histology* / Q000000981:diagnostic imaging