Ankylosing spondylitis often affects the sacroiliac or SI joint, which may cause pain in the lower back or buttocks. Learn more here.

Sacroiliac (SI) joint pain is a common cause of lower back pain. Here, learn about exercises and stretches that can help relieve the pain, as well as the treatments available.

The sacroiliac joints connect your pelvis with the lower parts of your spinal cord. Read to know everything about sacroiliac dysfunction, symptoms, causes & treatment options.

At one point, the sacroiliac joints were thought to be a major source of low back pain, but more accurate methods of diagnosis have proved that not to be the case.

A case report is presented of a patient with an anterosuperior osteophytic bone bridge of the sacroiliac joint causing lumbar back pain. After prolonged physiotherapy, the bone bridge was excised, ...

The sacroiliac joints connect your hip bones to the spine—and can cause back pain. Pregnancy, injury, and playing sports can all cause SI joint pain.

Acupuncture may be used to alleviate SI joint pain due to sacroiliitis. Studies have generally found acupuncture to be effective at easing lower back pain Learn more.

It’s not always easy to know if your SI joint is the cause of your low back pain. WebMD explains how doctors diagnose the condition.

Tailbone pain causes range from prolonged sitting to injuries and falls. Rarely, the pain is caused by tailbone cancer. Chordoma tumor, a cancerous tumor that grows along your spine, is one possible ...

"SI joint pain is often felt as a deep, dull ache in the buttock and lower back, typically localized to one side," explains Sapna Sriram, DC, Co-Founder and CEO of Toronto's Integra Health Centre.

Lower back and hip pain can be caused by several factors, including sciatica and muscle strain. Here, experts explain symptoms and treatment options.