Sacroiliac joint dysfunction

The sacroiliac joint is located in the pelvis, linking the iliac bone to the sacrum. This joint transfers weight and forces between the upper body and legs. It is an essential component for shock absorption to prevent impact forces during walking from reaching the spine.

Dysfunction in the sacroiliac joint, or SI joint may have several causes, particularly: 

  • Sacroiliitis
  • Osteoarthritis
  • SI Joint Injury
  • Prior Lumbar Fusion
  • Pregnancy

 Symptoms of SI joint syndrome are often difficult to distinguish from other types of low back pain, and may include:

  • Lower back pain (below L5)
  • Sensation of lower extremity: pain, numbness, tingling, weakness
  • Hip/ groin pain
  • Feeling of leg instability
  • Disturbed sleep patterns
  • Disturbed sitting patterns (unable to sit for long periods, sitting on one side)
  • Pain going from sitting to standing

Your doctor will consider all the information you provide, including any history of injury, location of your pain, and problems standing or sleeping. A variety of diagnostic tests performed by may help determine whether the SI joint is a source of the symptoms.

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