Missoula Bone and Joint and Surgery Center

SI Joint Pain

Watch this video of a patient's journey with SI joint pain



Dr. Michael Woods, orthopedic spine surgeon at Missoula Bone & Joint, has been very interested in the sacroiliac (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 research and outcome-based practices in collaboration with several major national and international universities.

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. Learn more about low back pain and the sacroiliac joint.

Patients with SI joint pain 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

Dr. Woods understands that sacroiliac joint pain is very real and very painful. Watch as he walks you through the process of diagnosing and treating SI joint pain and dysfunction.

If you think you might have SI joint pain, schedule a consultation with Dr. Woods at our Missoula, Montana orthopedic office. Call (406) 721-4436 or request an appointment online today.

Minimally Invasive SI Joint Fusion with the iFuse Implant System®

The SI joints can be 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.1-4 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.5

The iFuse Implant System is designed to stabilize and fuse the SI joint for some causes of SI joint pain. This procedure is done through a small incision and takes about one hour. SI joint treatment using the patented triangular design of the iFuse Implant has produced unparalleled clinical results. More than 30 published, peer-reviewed articles demonstrate safety and effectiveness of the iFuse Implant System.6 Learn more about iFuse surgery.

iFuse is the only SI joint fusion system with clinical studies demonstrating that treatment improved pain, patient function, and quality of life.7 There are potential risks associated with the iFuse Implant System. It may not be appropriate for all patients and all patients may not benefit.

Dr. Woods has specialized in the SI iFuse surgery since 2010 and has performed over 100 iFuse surgeries. If you have been diagnosed with SI joint pain and conservative treatments have not been successful in relieving your pain, visit Dr. Woods at Missoula Bone & Joint to find out if you might be a candidate for iFuse surgery. For an appointment, call (406) 721-4436 or request one online today.

SI Join - Missoula Bone & Joint - Surgery Center - Orthopedic Urgent Care in Western Montana - Award


  1. Bernard TN, et al. Recognizing Specific Characteristics of Nonspecific Low Back Pain. Clin Orthop Relat Res. 1987;217:266–80.
  2. Schwarzer AC, et al. The Sacroiliac Joint in Chronic Low Back Pain. Spine. 1995;20:31–7.
  3. 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.
  4. Sembrano JN, et al. How Often Is Low Back Pain Not Coming From the Back? Spine. 2009;34:E27–32.
  5. DePalma MJ, et al. Etiology of Chronic Low Back Pain Patients Having Undergone Lumbar Fusion. Pain Med. 2011;12:732-9.
  6. Polly, D.W. et al., Neurosurgery. 2015. A list of additional published studies is available at www.si-bone.com/results – 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.
  7. 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.


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