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SI Joint

The Sacroiliac Joint Fusion System

The Sacroiliac Joint Fusion System is a minimally invasive surgical (MIS) procedure for patients with sacroiliac (SI) joint dysfunction and/or inflammation (sacroiliitis) who have not gained relief from conservative care. This System is the only MIS process with the proprietary Decorticator® that allows surgeons to prepare the articular region of the joint and insert bone graft into the joint to help facilitate a true bone fusion. This procedure enables a more rapid return to regular activities for patients and a greater potential for a successful SI joint fusion.

This System is the only minimally invasive SI joint fusion system that includes all three critical steps to achieve true bone fusion across the SI joint:

  • Decortication – preparing the bone surface to trigger the body's natural healing response.
  • Bone grafting – filling the space between bones with material the bone may grow across.
  • Fixation – placing threaded implants that prevent the joint from moving during the healing process.


  • Minimal incision size
  • Immediate post-operative stabilization
  • True bone fusion, by creating the conditions that ensures bony growth across the SI joint
  • Potential for a rapid recovery
About the sacroiliac (SI) joint

The sacroiliac joints are strong joints (or articulations) between the bottom-most triangular bone of your spine, called the sacrum, and the ilium sections of the pelvis (the sections of the pelvis you put your hands on when you put your hands on your hips).

The function of the sacroiliac joint is both shock absorption (depending on the joint's possible amount of movement) and torque conversion, to transfer movement in your lower body up to your spine.