Surgical Technologies

Si Bone / Si Infusion

A minimally invasive surgical approach to the management of SI joint disruption and dysfunction.

Why the SI joint?

Up to 25% of all low back pain is SI joint in origin – but the diagnosis of SI joint disease is frequently overlooked. Cohen, et al.1

The incidence of SI joint degeneration in postlumbar fusion surgery is 75% at 5 years postsurgery. Ha, Kee-Yong, et.al.2

It is common for pain from SI joint dysfunction to mimic discogenic or radicular low back pain.Many patients go on to receive lumbar fusion instead of SI joint fusion – so SI joint disease should be strongly considered in differential diagnosis of low back pain. Weksler, et al.2

Now there’s a MIS approach to surgical management of SI Joint disruption and dysfunction that’s easier and less invasive than traditional open surgery.

With the iFuse Implant System, there is no need for:

  • BMP in conjunction with autologous bone graft
  • Additional pedicle screws and rods
  • Hollow modular anchorage screws
  • Cannulated compression screws
  • Threaded cages within the joint
  • Fracture fixation screws

Product Benefits

  • Less invasive than traditional open surgery with no extensive soft tissue stripping
  • Straightforward minimally invasive (MIS) surgical approach
  • Implant profile and design minimizes rotation and micromotion
  • Rigid titanium implants provide immediate post-op SI joint stability
  • Porous plasma spray coating with irregular surface designed to support stable bone fixation/fusion
  • Larger implant surface area designed to maximize post-surgical weight bearing capacity
  • Biomechanically rigorous implant designed specificall 

Minimally invasive surgical (MIS) solution compared to open surgical SI joint fusion

  • Minimal incision size
  • Minimal soft tissue stripping
  • Minimal tendon irritation

iFuse Implant System versus traditional SI joint fixation

  • Bony interference with iFuse Implant System versus none with screws
  • No conflicts with lumbar fusion devices
  • Stronger construct versus other SI joint fixation