《英文msh词典》Age-Related Bone Losses
[入口词] Age-Related Bone Losses
[主题词] Osteoporosis
[英文释义] Reduction of bone mass without alteration in the composition of bone,leading to fractures. Primary osteoporosis can be of two major types: postmenopausal osteoporosis (OSTEOPOROSIS,POSTMENOPAUSAL) and age-related or senile osteoporosis.