Parathyroid hormone (PTH) and its analogs have been used as bone anabolic agents for the treatment of severe osteoporosis in clinic.
甲状旁腺激素（PTH）目前已作为一种促骨合成药物，用于骨质疏松症的临床治疗。However, the cortex of the posterior tibia does not always offer good purchase for screw fixation, particularly in osteopenic bone.
但是胫骨后侧皮质并不总是能用于螺钉的固定，特别是在骨质疏松骨。It is often used in the United States to show people if they are in danger of osteoporosis.
在美国，经常用这种测试方法来告诉人们有没有患骨质疏松症的风险。Osteoporosis (bone resorption) is often brought on by high phosphorus and low calcium intake.
骨质疏松症（骨头再吸收）时常被高的磷和低的钙吸入引起。First, clean the joint carefully. Then loosely assemble the joint by putting in the bottom two or three bolts.
首先细心地清洗连接处，然后，在底座部疏松地装上两个或三个螺栓。Osteoporosis or low bone density is often described as a silent epidemic of the 21st century.
骨质疏松症或骨质密度偏低通常被视为二十一世纪的“安静的瘟疫”。Dr Claire Bowring, National Osteoporosis Society, said the research did not mean that people head for the pub.
英国国家骨质疏松症学会的克莱尔·鲍灵（ClaireBowring）表示这项研究成果并不是鼓励人们都到酒吧里去喝酒。It has loose and porous structure, poor stability and corrosion resistance which make it essential for the material to be antirust treated.
其结构疏松、多孔，稳定性和耐蚀性差，须进行防锈处理。This MRI of the spine demonstrates marked kyphosis with compressed fractures. Such a finding can be seen as a consequence of osteoporosis.
脊柱MRI显示明显的脊柱后凸，也可见伴有压缩性骨折。主要是由于长期骨质疏松形成的。