Types of Arthritis That Cause Sacroiliac Joint Pain

If you struggle with lumbar back pain often, it may be because of an arthritic sacroiliac joint. According to experts, in over 15 to 30 percent of back pain cases, the sacroiliac (SI) joint is the cause of origination. Several types of arthritis contribute to pain in the sacroiliac joint. But before we get to them, let’s first learn a bit about the anatomy of the Sacroiliac joint.

Anatomy of the Sacroiliac Joint

Our spinal cord comprises several vertebrae, and those in the lower back are referred to as "lumbar" vertebrae. The lumbar vertebrae rest on top of a triangle-shaped bone called the sacrum.

A sacroiliac joint surrounds the sacrum on either side, which connects the sacrum to the pelvic bone. Because of its large size, the sacroiliac joint plays a major role in supporting the upper human body, making it susceptible to several arthritis types.

Sacroiliac Joint Pain Symptoms

People struggling with sacroiliac joint pain have reported the following symptoms: