钙作为骨骼中的主要成分,约占体重的1.5％～2％。骨骼中的钙含量与骨骼的强度和功能有密切的关系,老年人中常发生的骨质疏松症,常出现的腰背疼痛、肢体关节酸痛无力,严重者的腰弯、背驼(脊椎骨压缩性骨折)和肢体骨骨折就是因为骨骼中的 Calcium as a bone in the main components, accounting for about 1.5% to 2% of body weight. The calcium content in the bones is closely related to the strength and function of the bones. Osteoporosis often occurs in the elderly, low back pain often occurs, weakness in the joints of the joints, lumbar curves in severe cases, Fractures) and limb fractures are due to bones