MRI of the Sacroiliac Joint

MRI of the sacroiliac (SI) joints is a highly accurate diagnostic method that allows detailed assessment of the pelvic bones, sacrum, joint surfaces and surrounding soft tissues. It is particularly valuable for detecting inflammatory and degenerative conditions that cannot be reliably visualized using X-ray or ultrasound.

What Does SI Joint MRI Reveal?

• trauma of the lower back and sacrum;
• sacroiliitis (inflammatory lesions of the SI joints);
• congenital malformations;
• cartilage damage;
• bone overgrowth and sclerosis;
• abnormal joint cavities and enlargement of foramina;
• calcium deposits;
• edema caused by inflammation;
• early signs of autoimmune rheumatic diseases.

Indications for MRI

• sudden limping;
• persistent sacral pain or clicking sounds;
• nerve compression symptoms near the sacrum;
• pelvic or sacral trauma;
• suspicion of tumors or metastases;
• ankylosing spondylitis and other rheumatic diseases;
• hypoplasia or congenital anomalies.

How the Examination Is Performed

The patient lies horizontally on the MRI table. Remaining still is crucial for obtaining high-quality images. If contrast is required, it helps detect tumors, metastases, fibrosis and active inflammation. The average duration of the scan is 15–20 minutes.