骨质疏松症是机体含骨量降低、骨组织微细结构破坏等系统性的骨骼疾病,患者骨的易脆性增加,并常易发生骨折。据统计,全世界骨质疏松症患者业已超过2亿人,美国每年有2000多万人发生骨质疏松,其中130万人发生骨折。据推测,到21世纪,全世界因骨质疏松引起的股骨颈骨折将达到450万人。新近,北京中日友好医院等单位对我国 Osteoporosis is a systemic skeletal disease with reduced bone mass and disrupted bone structure. The fragility of the patient’s bone increases, and fractures often occur. According to statistics, there are more than 200 million osteoporosis patients in the world, and more than 20 million people in the United States have osteoporosis each year, of which 1.3 million have fractures. It is estimated that by the 21st century, the femoral neck fracture caused by osteoporosis in the world will reach 4.5 million people. Recently, Beijing Sino-Japanese Friendship Hospital and other units