骨质疏松症的临床表现是骨折及其并发症,骨折最典型部位是髋部、椎体和腕部。髋部骨折是骨质疏松症的一种毁坏性表现,5～20％病人于骨折发生后1年内死亡。同时50％以上生存者致残,多数为永久性的。目前,骨质疏松症已成为一个重要的公共健康问题。美国有1/3的妇女患有此病,每年150万人发生骨折,耗资巨大。我国这方面研究起步较晚,但随着人口进行性老年化,其患病率必定是可观的。 骨质疏松一旦存在,治疗是困难而结果却是令人失望的,因此预防较治疗更为重要,从而需要能早期发现骨改变及其反映治疗效果的指标。现代对骨量检测方法的研究热潮正是建立在此基础上的,骨量测定是准确性最高的预测骨折指标。研究显示,一般骨颈皮质 The clinical manifestations of osteoporosis are fractures and their complications. The most typical fractures are the hip, vertebral body and wrist. Hip fractures are a devastating manifestation of osteoporosis and 5 to 20% of patients die within 1 year of fracture. At the same time more than 50% of survivors were disabled, the majority of permanent. At present, osteoporosis has become an important public health issue. One in three women in the United States suffers from the disease, with 1.5 million people fracturing each year, which is costly. Our study in this area started late, but with the population aging, its prevalence rate must be considerable. Once osteoporosis is present, the treatment is difficult and the result is disappointing, so prevention is more important than treatment and there is a need for early detection of bone changes and indicators that reflect the effect of the treatment. Modern research on the method of bone mass craze is based on this, and bone mass is the most accurate prediction of fracture index. Studies have shown that the general neck cortex