Start with understanding
The sacroiliac joints connect the sacrum at the base of your spine to the pelvis. Pain in this area can come from the joint complex or from other nearby structures.
“SI joint dysfunction” is often used broadly. A careful assessment should establish whether this is a reasonable explanation, rather than assuming every one-sided lower-back or buttock ache comes from an out-of-place joint.
Video coming soon
Explore the written guide and illustrated lessons below.
Connect understanding to daily life
Location alone does not establish the source
The hip and lower back can produce overlapping symptoms. Clinicians may use a group of pain-provocation tests, but a positive cluster does not conclusively prove that the SI joint is the source. Different diagnostic questions may require different investigations.
Avoid the alignment trap
A painful area does not automatically mean the pelvis has shifted and needs repeated resetting. Ask for the clinical reasoning behind the label and the purpose of any proposed hands-on care.
Keep the wider differential open
Persistent pain with fever, significant trauma, unexplained illness, or neurological changes deserves medical assessment. New bladder or bowel dysfunction with groin numbness or rapidly worsening weakness requires emergency care.
Build the plan around your life
Explain the task that reliably interrupts your day, and what you would like to do more comfortably. A goal such as getting out of the car or sleeping with fewer interruptions gives a plan a useful focus. Ask how the team will know whether the working explanation is correct enough to keep guiding care.
Make your next visit useful
Describe the exact location, how the problem began, and whether symptoms change with sitting, standing, stairs, or rolling in bed. Ask how certain the SI explanation is, which other areas were examined, and what would prompt the team to reconsider it.
Educational information complements individual guidance. Your health history, goals, and examination determine appropriate care.
Build your understanding
Five ideas to build your understanding. Swipe, use the arrows, or focus the slides and use your keyboard.
Can I identify SI joint pain by pointing to it?
You can show the clinician where it hurts, which is valuable. The source still needs assessment because hip, spine, and pelvic problems can overlap.
Does a positive SI test settle the diagnosis?
No. Research shows important limitations in ruling the SI joint in as the pain source. Results should be interpreted with the history and wider examination.
What the evidence means for you
Positive tests do not provide diagnostic certainty
A systematic review found limited accuracy for ruling in SI joint pain using provocation-test clusters.
Put it to use: Ask what competing explanations have been considered before accepting a definite SI diagnosis.
Keep in mind: Certainty of the evidence was very low; tests remain one component of clinical reasoning.
JOSPT · diagnostic systematic review →The joint complex requires a broader pathway
A multisociety consensus guideline emphasizes the complexity of diagnosis and differences among procedural options.
Put it to use: Persistent symptoms deserve a diagnosis-specific discussion rather than treating every pelvic complaint identically.
Keep in mind: Some recommendations depend on consensus and evidence gaps remain; this is not a guarantee for an intervention.
Pain Medicine · international consensus guideline →