Stagnant blood as a factor, can hinder the normal function of bone collaterals.Ultimately stagnant blood can induce loss of bone marrow, and formed osteoporosis.

• 瘀血作为致病因素，能够阻碍骨络的正常功能活动，最终使络损脉阻，骨髓失养，形成骨质疏松症。