Sacroiliitis Bone Scan: What to Know

A bone scan uses a small tracer and a camera to show bone turnover. Increased uptake near a sacroiliac joint can reflect inflammation, stress, healing, infection, arthritis, or another process. It is therefore a clue rather than a diagnosis by itself. The clinician compares the scan with your history, examination, blood tests, and sometimes other imaging. Tell the imaging team about pregnancy, breastfeeding, allergies, and medicines before the appointment.

Follow the imaging department's instructions about fluids, eating, and timing. You may need to wait between tracer injection and images, and you may be asked to drink water and empty your bladder. Afterward, follow the department's specific hygiene and contact advice. Ask who will explain the report and what further assessment is needed. Treatment may include physiotherapy, manual therapy, or a sacroiliac joint injection only when the clinical picture supports it.

Contact your clinician if pain persists, limits walking, or is accompanied by morning stiffness or night discomfort. Seek urgent assessment for fever with severe back or buttock pain, a rapidly worsening hot area, major injury, new leg weakness, numbness around the groin, or bladder and bowel changes.

Why is a bone scan suitable for my symptoms? What other causes could create increased uptake? Would another scan answer a different question? When will I receive the report, and what treatment follows each possible result?