How is sacroiliac joint dysfunction different in pregnancy?

The sacroiliac joints connect the lower spine and pelvis and help transfer load between the trunk and legs. During pregnancy, a growing abdomen, altered posture, changing walking pattern, and increased demands on the pelvis can make one side or both sides feel painful. Pain may be felt near the dimples of the lower back, buttock, groin, or outer hip and may increase with stairs, turning in bed, standing on one leg, or getting out of a car.

These symptoms can overlap with other causes of back or pelvic pain. A pregnancy-aware clinician considers the stage of pregnancy, the location and behaviour of pain, neurological symptoms, abdominal symptoms, urinary symptoms, and any concerns about labour or the pregnancy itself.

Tell your maternity team and ask for assessment by a clinician familiar with pregnancy. Gentle activity, position changes, supportive footwear, a pillow between the knees, and pacing tasks may help; choose exercises and manual treatments that have been cleared for your pregnancy. Avoid lifting strategies or stretches that sharply increase pain. Ask before using medicines, heat, braces, or supplements, particularly if you have other health conditions.

Contact your maternity service urgently for vaginal bleeding, leaking fluid, regular painful contractions, fever, severe abdominal pain, painful urination, a severe headache or visual change, or reduced fetal movement when that is relevant to your stage of pregnancy. Seek emergency help for new leg weakness, loss of bladder or bowel control, fainting, chest pain, or severe breathlessness. Do not assume every new pelvic pain is a joint problem.

Ask which symptoms fit sacroiliac joint dysfunction, which warning signs need maternity review, what movements and exercises are suitable now, whether a support belt is appropriate, and how to plan work, sleep, and birth positions around your pain.