Does sacroiliac joint dysfunction cause buttock pain?

The sacroiliac joints connect the base of the spine with the pelvis. Irritation or altered movement there may produce aching on one side of the buttock, close to the dimples at the back of the pelvis. Discomfort can become more noticeable when standing from a chair, climbing stairs, turning in bed, taking a long stride, or putting weight through one leg. The sensation may stay in the buttock or spread toward the hip or upper thigh. These features can overlap with problems involving the lumbar spine, hip, or nearby muscles, so the symptom alone does not establish the cause.

Reduce movements that clearly flare the pain for a short period, while keeping gentle walking within a comfortable range. A clinician or physiotherapist can examine your back, hip, pelvis, gait, and movement patterns. Treatment may include graded exercises for trunk and hip control, mobility work, changes to lifting or sitting habits, and suitable pain relief. Tell the clinician whether the pain began after a fall, pregnancy, a change in activity, or prolonged one-sided loading.

Arrange an assessment if the pain persists, keeps returning, limits sleep or walking, or is not settling with simple activity changes. Seek urgent medical help for new loss of bladder or bowel control, numbness around the genitals or inner thighs, major leg weakness, inability to bear weight after an injury, fever with severe back or pelvic pain, or unexplained weight loss with persistent pain.

Ask: Could the sacroiliac joint, hip, lumbar spine, or a muscle be contributing? Which movements should I temporarily modify? What exercises are appropriate now? Which warning signs should prompt urgent review?