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What is MIS Sacroiliac Joint Fusion Using SI-BONE?

MIS (Minimally Invasive Surgery) Sacroiliac Joint Fusion using SI-BONE's technology involves a surgical procedure to stabilize the sacroiliac (SI) joint using implants made by SI-BONE, a company specializing in devices for this purpose. The procedure is typically performed to address SI joint dysfunction, which can cause lower back pain and other symptoms.

SI-BONE offers a range of products uniquely designed to address SI joint dysfunction. SI-BONE has been at the forefront of advancing minimally invasive procedures for the SI joint. The term minimally invasive refers to surgery performed through smaller incisions, with tiny instruments, and minimal muscle trauma. Through its groundbreaking iFuse Implant Systems, SI-BONE empowers patients and optimizes their well-being. The iFuse Implant by SI-BONE is a small, triangle-shaped implant designed to stabilize and fuse the sacroiliac joint to address SI joint dysfunction. SI joint pain sufferers around the world have found lasting relief with the SI-BONE’s iFuse Implant System.

Anatomy of the SI Joint

Sacroiliac joints (SI joints) are joints in the lower back region, located where the sacrum and ilium bones conjoin.  Despite  the fact that these joints are small and have limited motion, they have an important role in connecting your spine to the pelvic bone and thus the lower part of your body. They perform important functions by absorbing the injurious shock forces of the upper portion of the body. Any inflammation or irritation in SI joints may cause pain in the lower back, abdomen, groin, buttocks, or legs.

Indications for MIS Sacroiliac Joint Fusion Using SI-BONE

MIS Sacroiliac Joint Fusion using SI-BONE implants is typically recommended for individuals who experience significant functional impairment due to SI joint dysfunction and when conservative treatments such as physical therapy, medications, and injections have not provided sufficient relief. Sacroiliac joint dysfunction is defined as a strain or painful discomfort experienced in the lower back or buttocks region. The pain may occur as a result of injury or damage to the sacroiliac joint by trauma or a disease condition.

Preparation for MIS Sacroiliac Joint Fusion Using SI-BONE

Before the surgery, your healthcare provider will conduct a thorough medical evaluation, including a review of your medical history, current medications, allergies, and any previous surgeries or medical conditions. Imaging studies such as X-rays, MRI (Magnetic Resonance Imaging), or CT (Computed Tomography) scans may be performed to assess the anatomy of the sacroiliac joint, identify any abnormalities, and guide surgical planning. Your surgeon may instruct you to avoid certain medications and supplements that can thin the blood and increase the risk of bleeding during surgery. You should not consume solids or liquids at least 8 hours prior to surgery. A signed informed consent form will be obtained from you after the risks and benefits of the surgery have been explained.

Procedure for MIS Sacroiliac Joint Fusion Using SI-BONE

The procedure for minimally invasive sacroiliac joint fusion using SI-BONE's technology typically involves the following steps:
  • You will be taken to the operating room and given anesthesia, which may include general anesthesia or regional anesthesia with sedation.
  • You will be positioned on the operating table usually face down (prone position) which allows the surgeon optimal access to the sacroiliac joint.
  • The surgeon makes small incisions, usually about 2-3 centimeters in length, near the SI joint.
  • Specialized instruments are used to access the sacroiliac joint and remove any damaged tissue, cartilage, or bone that may be contributing to pain or instability in the joint.
  • SI-BONE's triangular-shaped implants, called iFuse Implants, are then placed across the SI joint to stabilize and fuse it. These implants are designed to promote bone growth and fusion over time, creating a solid connection between the sacrum and ilium.
  • X-ray or fluoroscopy (real-time imaging) may be used during the procedure to confirm the accurate placement of the implants and ensure proper alignment of the SI joint.
  • Once the implants are in place and the surgeon is satisfied with the fusion construct, the incisions are closed with sutures or surgical staples. Sterile dressings are applied to the incision sites.

Postoperative Care and Recovery

After the procedure, you will be monitored in the recovery area until you are awake and stable. Depending on your condition and the specific surgical protocol, you may be discharged home the same day or stay in the hospital for a short observation period. You will receive instructions on postoperative care, including pain management, activity restrictions, wound care, and follow-up appointments with your surgeon. Physical therapy and rehabilitation may also be recommended to aid in your recovery and optimize long-term outcomes.

Risks and Complications

MIS sacroiliac joint fusion using SI-BONE is a relatively safe procedure; however, as with any surgery, some risks and complications may occur, such as:
  • Infection
  • Bleeding
  • Blood clots
  • Persistent pain
  • Damage to nerves and vessels
  • Failure of fusion
  • Broken hardware
  • Adverse effects of anesthesia


Benefits of MIS sacroiliac joint fusion using SI-BONE include:
  • Smaller incision size
  • Minimal muscle trauma
  • Minimal tendon irritation
  • Less postoperative pain
  • Reduced blood loss
  • Faster recovery time
  • Highly durable implants
  • Proven effectiveness
  • High level of patient satisfaction

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Sports Medicine Associates of South Florida, PA

1600 Town Center Boulevard
Suite C
Weston, FL 33326

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Sports Medicine Associates of South Florida, PA

220 SW 84 Avenue
Suite 102
Plantation, FL 33324

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