Causes
By Mayo Clinic staffA wide range of factors or events may cause sacroiliac joint dysfunction, including:
- Traumatic injury. A sudden impact, such as a motor vehicle accident or a fall, can damage your sacroiliac joints.
- Arthritis. Wear-and-tear arthritis (osteoarthritis) can occur in sacroiliac joints, as can ankylosing spondylitis — a type of inflammatory arthritis that affects the spine.
- Pregnancy. The sacroiliac joints must loosen and stretch to accommodate childbirth. The added weight and altered gait during pregnancy can cause additional stress on these joints and can lead to abnormal wear.
- Infection. In rare cases, the sacroiliac joint can become infected.
References
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- Vora AJ, et al. Functional anatomy and pathophysiology of axial low back pain: Disc, posterior elements, sacroiliac joint and associated pain generators. Physical Medicine & Rehabilitation Clinics of North America. 2010;21:679.
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- Yu DT. Clinical manifestations of ankylosing spondylitis in adults. http://www.uptodate.com/index. Accessed Nov. 20, 2012.
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