原发性骨质疏松症(osteoporosis,OP)是以骨量减少,骨小梁变细、断裂、数量减少,皮质骨多孔、变薄为特征,以至骨的脆性增高及骨折的危险性增加的一种全身性骨病。原发性骨质疏松又分为Ⅰ型(绝经后骨质疏松)和Ⅱ型(老年性骨质疏松)。绝经后骨质疏松症(postmenopausal osteoporosi Osteoporosis (OP) is characterized by osteopenia, trabecular thinning, fracture, reduced number, porous and thin cortical bone, increased bone fragility and increased risk of fractures A systemic bone disease. Primary osteoporosis is divided into type I (postmenopausal osteoporosis) and type II (senile osteoporosis). Postmenopausal Osteoporosis (postmenopausal osteoporosi