For patients with sacroiliac (SI) joint dysfunction, posterior allograft SI fusion is a minimally invasive procedure to stabilize the joint and reduce pain. It involves placing a biologic allograft (donor bone tissue) into the SI joint through a small incision in the lower back. The allograft promotes natural bone growth, helping the joint fuse and restore stability.

Preparing your body for surgery is crucial. Following an anti-inflammatory diet and taking nutritional supplements can help in healing. Refrain from eating for 8 hours before the procedure, but clear liquids are usually allowed up to 2 hours prior. If you're on blood thinners, adhere to your doctor’s advice on stopping them. Clean the surgical site with a pre-surgical wash like Hibiclens® to reduce infection risk. Wear loose clothing and arrange assistance for a ride home.

After surgery, avoid bending, twisting, and lifting over 10 pounds for at least 6 weeks to aid healing. Avoid falling which could affect the success of the surgery. Mild soreness may occur—use ice and prescribed medication as needed. Keep the incision site clean and dry for 72 hours. Support recovery with a nutrient-rich, anti-inflammatory diet, proper hydration, and rest.

This procedure has a slightly higher risk of implant misplacement due to the angled approach. If misplacement occurs, it might lead to a lack of symptom relief rather than worsening pain.

If pain returns in the months after the procedure, consult your care team. Imaging may be needed for nonunion or implant misplacement, and sometimes additional techniques may be required. Following these guidelines aids in a successful recovery. If concerns arise, contact your medical team.