The sacroiliac joint, commonly referred to as the SI joint, connects the sacrum to the ilium of the pelvis on both sides of the body. This joint helps transfer weight from the torso down through the legs. Sacroiliac joint fusion (SIJF) is a surgical procedure that joins or fuses the sacrum and ilium together to eliminate motion and relieve pain caused by injury or deterioration of the sacroiliac joint.

Causes of Sacroiliac Joint Pain

There are several factors that can cause sacroiliac joint pain:

Injury or Trauma

Direct injury or trauma to the pelvis area from a car accident, fall, or sports injury can damage the sacroiliac joint. Over time, this damage can lead to instability, arthritis, and pain.

Degenerative Changes

The natural process of aging and wear-and-tear can cause the cartilage within the joint to deteriorate. As the cartilage breaks down, it leads to inflammation, stiffness, and pain in and around the SI joint.

Inflammatory Arthritis

Conditions like ankylosing spondylitis or reactive arthritis that cause inflammation in the joints can also affect the sacroiliac joints. Over time, this chronic inflammation can degrade the joints.

Misalignment

Anatomical issues like leg length discrepancy or changes in gait from previous injury can put abnormal stress on the SI joint over the years and lead to injury or strain.

Sacroiliac Joint Fusion -  https://www.coherentmi.com/blog/sacroiliac-joint-fusion-a-guide-to-this-life-changing-back-procedure-19