During pregnancy, the ligaments, under hormonal influences, become lax and stretch to allow the pelvis to spread for delivery. It is important to hold the sacroiliac and pubic joints firmly together after delivery in order to assist the ligaments in shortening and realigning the pelvis properly. Research has shown that after childbirth most women noted a positive effect using a sacroiliac belt. Because all pelvic joints loosen during pregnancy, use of a sacroiliac belt most likely will prevent associated pain during and after pregnancy.
SI joint dysfunction is certainly not the only reason you might be feeling lower back or leg pain, so it’s always best to get a proper diagnosis from a doctor before taking any steps to treat your condition. If you developed back pain prior to being 30 years old and experience other symptoms — such as morning stiffness, unexplained weight loss, bowel problems, fever, rashes, pain that lasts for more than six weeks and pain that improves with activity — it’s possible that the real cause for your pain is another disorder or disk disease.