SI Joint Pain & SI iFuse Surgery

SI Joint Pain

Dr. Michael Woods has been very interested in the SI Joint and its impact for years. He participates in SI Joint study and research groups helping to establish best practices for the diagnosis and treatment of SI joint conditions. He follows researched and outcome based practices in collaboration with several major national and international universities.

Dr. Woods has specialized in the SI iFuse surgery since 2010, and has performed over 100 iFuse surgeries. A good information resource is

Patients with SI Joint will usually have the following symptoms:

  •  Lower back pain near the hip and buttock
  •  Hip and or groin pain
  •  Feelings of giving way or buckling in the leg
  •  Problems sleeping and staying comfortable in bed
  •  Problems sitting especially for long periods or road trips in the car
  •  Trouble going from sitting to standing

The SI joints are the major connection joints between the upper and lower body, they have a minor rocking motion and if they are injured or deteriorated they can be a significant source of pain.


What is the Sacroiliac (SI) iFuse Implant System 

The iFuse Implant System is intended for sacroiliac joint fusion for some causes of SI joint pain. SI joint treatment using the patented triangular design of the iFuse Implant™ has produced unparalleled clinical results. More than thirty published, peer-reviewed articles demonstrate safety and effectiveness of the iFuse Implant System.1 iFuse is the only SI joint fusion system with clinical studies demonstrating that treatment improved pain, patient function, and quality of life.2 There are potential risks associated with the iFuse Implant System. It may not be appropriate for all patients and all patients may not benefit. For information about the risks, visit

The SI joint is a significant cause of lower back pain. Clinical publications have identified the SI joint as a pain generator in 15-30% of chronic lower back pain patients.3-6 In addition, the SI joint is a pain generator in up to 43% of patients with continued or new onset lower back pain after a lumbar fusion.7


  1. Polly, D.W. et al., Neurosurgery. 2015. A list of additional published studies is available at – Dr. Polly is an investigator on a clinical research study sponsored by SI-BONE. He has no financial interest in SI-BONE. Research was funded by SI-BONE, Inc.
  2. Duhon, B . et al., Triangular Titanium Implants for Minimally Invasive Sacroiliac Joint Fusion: 2-Year Follow-Up from a Prospective Multicenter Trial. Int J Spine Surg. 2016;10:Article 13. – Dr. Duhon is a paid consultant of and conducts clinical research for SI-BONE Inc. Research was funded by SI-BONE, Inc.
  3. Bernard TN, et al. Recognizing specific characteristics of nonspecific low back pain. Clin Orthop Relat Res. 1987;217:266–80.
  4. Schwarzer AC, et al. The Sacroiliac Joint in Chronic Low Back Pain. Spine. 1995;20:31–7.
  5. Maigne JY, et al. Results of Sacroiliac Joint Double Block and Value of Sacroiliac Pain Provocation Tests in 54 Patients with Low Back Pain. Spine. 1996;21:1889–92.
  6. Sembrano JN, et al. How Often is Low Back Pain Not Coming From The Back? Spine. 2009;34:E27–32.
  7. DePalma MJ, et al. Etiology of Chronic Low Back Pain Patients Having Undergone Lumbar Fusion. Pain Med. 2011;12:732-9.

Click here for SI iFuse Patient Education Pamphlet