老年人髋骨及其它非脊椎骨骨折的危险性增加,在许多发达国家已接近于流行水平。尽管有许多因素与这类骨折有关,但最重要的原因是骨块减少以及跌倒频率增加。骨密度随年龄增长而降低,其原因至少部分可解释为甲状旁腺素(PTH)增多所致。作者指出,维生素 D_3不足和低钙摄入可激发老 The increased risk of hip and other non-vertebral fractures in the elderly has approached epidemic levels in many developed countries. Although there are many factors associated with this type of fracture, the most important reason is the reduction of the mass and the frequency of falls. Bone mineral density decreases with age, at least in part due to an increase in parathyroid hormone (PTH). The authors point out that vitamin D 3 deficiency and low calcium intake can stimulate the old