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sacroiliitis, sacroiliitis symptoms
Sacroiliitis say-kroe-il-e-I-tus is a medical condition caused by any inflammation within one, or both, of the sacroiliac joints1 Sacroiliitis is a feature of spondyloarthropathies, such as axial spondyloarthritis including ankylosing spondylitis, psoriatic arthritis, reactive arthritis or arthritis related to inflammatory bowel diseases, including ulcerative colitis or Crohn's disease It is also the most common presentation of arthritis from brucellosis


  • 1 Cause
  • 2 Symptoms
  • 3 Diagnosis
  • 4 Treatment
    • 41 Non-surgical
    • 42 Surgical
  • 5 See also
  • 6 References
  • 7 External links


Magnetic resonance images of sacroiliac joints Shown are T1-weighted semi-coronal magnetic resonance images through the sacroiliac joints a before and b after intravenous contrast injection Enhancement is seen at the right sacroiliac joint arrow, left side of image, indicating active sacroiliitis This patient had psoriatic arthritis

Sacroiliitis is a condition caused by inflammation within the sacroiliac joint2 This joint is located where the base of the spine, known as the sacrum, and the pelvis, known as the ilium, intersect "Itis" is a latin term denoting inflammation3

Since sacroiliitis can describe any type of inflammation found within the sacroiliac joint, there can be a number of issues that cause it These include:4

  • Degenerative arthritis, or osteoarthritis of the spine, can cause degeneration within the sacroiliac joints and lead to inflammation and joint pain
  • Any form of spondyloarthropathies, which includes ankylosing spondylitis, psoriatic arthritis, reactive arthritis or arthritis related to inflammatory bowel diseases, including ulcerative colitis or Crohn's disease
  • Pregnancy can cause inflammation as a result of the widening and stretching of the sacroiliac joints to prepare for childbirth Additionally, the added weight carried during childbearing can put an extra amount of stress on the SI joints, leading to abnormal wear
  • Traumatic injury such as a fall or car crash that affects the lower back, hips, buttocks or legs
  • Though rare, infection within the sacroiliac joints or another part of the body, such as a urinary tract infection, can cause inflammation5


People suffering from sacroiliitis can often experience symptoms in a number of different ways, however it is commonly related to the amount of pressure that is put onto the sacroiliac joint Sacroiliitis pain is typically axial, meaning that the location of the condition is also where the pain is occurring Symptoms commonly include prolonged, inflammatory pain in the lower back region, hips or buttocks26

However, in more severe cases, pain can become more radicular and manifest itself in seemingly unrelated areas of the body including the legs, groin and feet

Symptoms are typically aggravated by:

  • Transitioning from sitting to standing
  • Walking or standing for extended periods of time
  • Running
  • Climbing stairs
  • Taking long strides


Sacroiliitis can be somewhat difficult to diagnose because the symptoms it manifests can also be caused by other, more common, conditions If a physician suspects sacroiliitis, they will typically begin their diagnosis by performing a physical exam Since the condition is axial, they can often pinpoint the affected joint by putting pressure on different places within the legs, hips, spine and buttocks They may also ask a patient to perform some stretches that will put gentle stress on the sacroiliac joints1

X-rays, MRIs and other medical imaging tests can be used to show signs of inflammation and damage within the SI joints Typically, a spine specialist will order a medical imaging test if they suspect ankylosing spondylitis or another form of arthritis to be the primary cause of inflammation and pain


Treatment of sacroiliitis can vary depending on the severity of the condition and the amount of pain the patient is currently experiencing However, it typically falls into one of two categories non-surgical and surgical:


In most cases sacroiliitis can be treated without surgery Often patients will find relief through a combination of rest, heat / ice therapy and anti-inflammatory medication, like ibuprofen Together these simple treatments help reduce inflammation and allow the body to deliver healing nutrients to the affected SI joints1

For more severe forms of sacroiliitis, sacroiliac joint injections might be recommended to help combat symptoms If chosen, a physician will inject a numbing agent, usually lidocaine, and a steroid containing powerful anti-inflammatory medication into the joint using fluoroscopic guidance7 These steroid injections can be delivered up to three or four times a year and should be accompanied with physical therapy to help rehabilitate the affected joint


Surgery is often the last resort when dealing with sacroiliitis and is rarely required However, it may be a viable option for patients who are suffering from severe pain that is unresponsive to nonsurgical treatments and is significantly impacting their quality of life In these cases, a minimally invasive procedure known as Sacroiliac Joint Fusion can effectively stabilize the joint and increase its load-bearing capacity by fusing it together8

See alsoedit

  • Sacroiliac joint dysfunction
  • Surgery for the dysfunctional sacroiliac joint


  1. ^ a b c "Sacroiliitis" Mayo Clinic 9 Jan 2013 
  2. ^ a b Slobodin, Gleb; Rimar, Doron; Boulman, Nina; Kaly, Lisa; Rozenbaum, Michael; Rosner, Itzhak; Odeh, Majed 2016-02-04 "Acute sacroiliitis" Clinical Rheumatology 35 4: 851–856 ISSN 0770-3198 doi:101007/s10067-016-3200-6 
  3. ^ "Definition of itis" MedicineNet Retrieved 2017-01-13 
  4. ^ Lim, Jae Y, MD January 2017 "Sacroiliitis" Atlantic Brain & Spine Retrieved 2017-01-13 
  5. ^ Scott, Kevin R; Rising, Kristin L; Conlon, Lauren Weinberger 2014 "Infectious Sacroiliitis" The Journal of Emergency Medicine 47 3: e83–e84 doi:101016/jjemermed201405001 
  6. ^ Dombrowski, Janice "What is the Difference Between Axial and Radicular Pain" Retrieved 2017-01-13 
  7. ^ "SI Joint Injection Information" SpineUniverse Retrieved 2017-01-13 
  8. ^ Kancherla, Vamsi; McGowan, Shane; Audley, Brittany; Sokunbi, Gbolabo O; Puccio, Steven T 2015 "Early Outcomes following Percutaneous Sacroiliac Joint Fusion" The Spine Journal 15 10: S255 doi:101016/jspinee201507392 

External linksedit

  • Backcom

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