???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????
1994??WHO???????BMD??BMC(bone mineral content???????)??????????????з??????????(Normal)?BMD??BMC????????????????????1???????(SD)???????????(Osteopenia)?BMD??BMC??????????????????????1??2.5????????????????(Osteoporosis)?BMD??BMC??????????????????????2.5????????????????????????(Osteoporosis)?BMD??BMC??????????????????????2.5????????????????1????1???????????????????????BMD??BMC?????????????????????