Deformity | SI-BONE
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  • Rigid titanium construction and triangular implant geometry provide immediate stabilization.
  • Unique design provides interference fit between the implant and the surrounding bone (cortical and cancellous bone).
  • 6X greater rotational resistance vs. screw. 82


  • 3D printed implant with porous surface facilitates bone ongrowth.17
  • Fenestrated structure allows through growth and accommodates bone graft.17
  • Porous surface self harvests bone during insertion.17


  • Immobilization and stabilization of the sacroiliac joint (SIJ) provides a foundation for long constructs that includes spinopelvic fixation.
  • 30% reduction in SI joint motion by adding iFuse Bedrock to sacral-alar iliac (S2AI) screws. 114
Image Courtesy of Dr. Clifford Douglas (Lorna Linda, CA)
Image Courtesy of Dr. Clifford Douglas (Lorna Linda, CA)

More Levels. More Stress.

A 2009 paper published in Spine by Ivanov showed fusing the L5-S1 and L4-S1 increased the motion (stress) of the sacroiliac joint by 52% and 168%, respectively.112

Conversely, there is little increase in motion of the lumbar spine (2-4%)113 and little increase in hip stress (5%)114 after fusing the sacroiliac joint.

Joint mechanics 4

Bedrock Biomechanics108 Barrow Neurological Institute

SI Joint ROM chart

S2A1 Bending Moment chart

  • iFuse Bedrock stabilized the SI joint as measured by decreased ROM 
  • S2AI and S2AI with iFuse Bedrock decreased the bending moments on the S1 screw (reduced S1 screw stresses)
  • iFuse Bedrock decreased the bending moments on the S2AI screw (reduced S2AI screw stresses) 

For indications, safety, and risk information about the iFuse Implant System, click here.


SI Joint and iFuse Implant System Training

SI-BONE offers training on SI joint diagnosis and treatment for healthcare providers. Learn more about SI joint training opportunities.

Find Out More

3,000+Behandelnde Chirurgen

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100+Publikationen zu iFuse

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