SI Joint Dysfunction

Pain in the lower back or pelvis can be traced back to the sacroiliac joints –  a common source of discomfort that can make everyday movement difficult. Understanding what causes SI joint dysfunction and exploring your treatment options can help you find lasting relief.

The sacroiliac joints connect the base of the spine to the pelvis on each side. S.I. joint dysfunction occurs when these joints become inflamed, worn, or move abnormally, disrupting how the spine and pelvis work together.

Most people describe S.I. joint dysfunction as pain in the lower back, buttock, or hip that may worsen with standing, climbing stairs, or shifting weight from one leg to the other. It can also cause pain that radiates into the groin or upper leg.

POSH specialists offer a range of treatments to help patients manage SI joint dysfunction, including both nonsurgical and surgical options tailored to each patient’s individual needs.

SI joint dysfunction typically develops when the sacroiliac joints become inflamed or move abnormally. Common causes include:

  • Arthritis or joint wear over time
  • Pregnancy, which can loosen ligaments around the joint
  • Injury or trauma to the lower back or pelvis
  • Previous spinal fusion surgery, which can add stress to the joint

Diagnosing SI joint dysfunction starts with a thorough evaluation by a POSH spine specialist. Our specialists typically evaluate patients by:

  • Physical exams: Our specialists will review your medical history and perform movements that help pinpoint whether the SI joint is the source of your pain.
  • Imaging tests: X-rays or MRI or CT scans give our specialists a detailed look at the joint and surrounding structures, helping confirm a diagnosis.
  • Diagnostic injections: A numbing injection into the S.I. joint can help confirm whether it’s the source of the pain, based on the amount of relief it provides.

POSH specialists work alongside a multidisciplinary team to deliver nonsurgical treatments for SI joint dysfunction. These conservative approaches are often the first step toward relief before surgical recommendations.

  • Anti-inflammatory medications (ibuprofen or acetaminophen)
  • Physical therapy
  • Steroid injections
  • Prescriptive medications

When nonsurgical methods don’t provide sufficient relief, a POSH specialist will discuss surgical options, which may include:

  • SI joint fusion: A minimally invasive procedure that stabilizes the joint using implants, reducing abnormal movement and relieving pain.

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