There are two pubic bones on the left and right, which together form the front edge of the pelvis. The pubic bones are connected by fibrocartilage and reinforced by ligaments, making them difficult to move. After pregnancy, due to the influence of hormones, the two pubic bones are slightly separated to facilitate the smooth delivery of the fetus in the future. However, if the distance between the pubic bones is large, it can cause traction pain when walking, especially when going upstairs. Because when going upstairs, the hind legs touch the ground, the center of gravity of the body is tilted to one side, and the left and right pubic bones are staggered, which pulls the fibrocartilage and ligaments, causing pain. If the separation is severe, tough