Sacroiliac (SI) Joint Dysfunction: Symptoms & Signs

Medically Reviewed on 9/17/2019

The connection of the sacrum and the right and left iliac (hip) bones form the sacroiliac (SI) joints. The sacrum is the triangular-shaped bone in the lower portion of the spine, centrally located below the lumbar spine.

Signs and symptoms associated with SI joint dysfunction can include

It can sometimes be difficult to precisely determine the location of the pain. The pain usually worsens with walking and is relieved by lying down.

Causes of sacroiliac (SI) joint dysfunction

There are many causes of dysfunction of the SI joint, including arthritis conditions, pregnancy, and any anatomic condition that alters the walking movement.

Other sacroiliac joint dysfunction symptoms and signs

  • Burning Sensation in the Pelvis
  • Groin Pain
  • Low Back Pain
  • Pain in the Back of the Hips
  • Sacroiliac Joint Pain
  • Stiffness
  • Thigh Pain


The term arthritis refers to stiffness in the joints. See Answer

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Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.