Patient's question:
NoDoctor's answer:
Hello: During pregnancy, the common folk say that giving birth involves "opening the bone seams." We say this statement is not scientific; what actually happens is the dilation of the cervix. However, during pregnancy, the ligaments in our joints are loosened, a change caused by pregnancy that makes our joints relax. That's why we measure the mother's pelvis before birth—it's because the ligaments are loosened, and in the middle stages of pregnancy, the ligaments are not yet fully relaxed. We say that the loosening of ligaments may cause some people to feel joint swelling when moving, or to hear a popping sound when they turn over, mainly due to the loosening of ligaments during pregnancy.