This condition involves the sensation of pain within the sacroiliac joint. The sacroiliac joint is a part of the interface between the spine and pelvis. Sacroiliac joint pain may be highly localized, or radiate outward through the rest of the pelvis.
- When people begin to age, the sacroiliac joint begins to fuse, commonly causing arthritis in that area due to cartilage deterioration within the joint. Pain caused by the sacroiliac joint is usually experienced in the lower half of the body, such as the back, hips, groin, and buttocks.