SI joint pain is one of the great impostors of the lower back. It gets treated as a disc, mistaken for sciatica, or written off as generic "back pain." And so it lingers, because the actual joint was never addressed.
Get the diagnosis right, though, and it's very manageable. The sacroiliac joint responds well to precise, hands-on care and the right stabilizing exercise.
What is the SI joint, and what goes wrong?
You have two sacroiliac joints, one on each side, where the base of your spine (the sacrum) meets the pelvis. They're small and remarkably strong, built to move very little while transferring the load of your upper body into your legs.
"Dysfunction" means one of those joints is moving too much or too little, or has become inflamed. The result is pain low and to one side of the back. And because it sits right where so many structures overlap, it's easily confused with a disc, the hip, or the nerve. Sorting that out is the key to fixing it.
Common causes of SI joint pain
- Pregnancy & postpartum: hormones loosen the pelvic ligaments, making the joints more mobile and irritable.
- A fall or impact onto the buttock: a jolt that shifts how the joint moves.
- Asymmetric loading: a leg-length difference, an altered gait, or always standing on one leg.
- Prolonged sitting & weak stabilizers: when the core and glutes don't support the pelvis well.
- Repetitive strain or arthritis: from sport, work, or wear over time.
Symptoms to look for
- Pain low and to one side of the back, often over the buttock or the dimple above it
- Sometimes felt in the groin or the back of the thigh, but rarely below the knee
- Worse standing up from sitting, climbing stairs, or rolling over in bed
- Discomfort standing on one leg, or with prolonged standing
- A feeling that the pelvis or low back is "stuck" or "catching"
When to seek care
If one-sided low back or buttock pain is limiting your day or keeps returning, an assessment can confirm whether the SI joint is the source, and separate it from the disc, hip, or nerve problems it mimics.
Seek urgent medical care if you have any of these
Some low back and pelvic pain needs prompt medical attention rather than conservative care. Call your physician or go to an emergency room for:
- Loss of bladder or bowel control, or numbness around the groin or inner thighs
- Significant or worsening leg weakness or numbness
- Pain following major trauma, or with fever or unexplained weight loss
- Low back or pelvic pain that is worse at night, or with prolonged morning stiffness in a younger adult (possible inflammatory arthritis worth evaluating)
These are uncommon, but a careful first assessment is designed to catch them.
How Dr. Daniel evaluates your SI joint
It starts with your story: where the pain sits, what sets it off, and whether it travels. The pattern of SI joint pain is distinctive, and it often points the way before any testing.
Then comes a focused exam: a cluster of provocation tests that load the SI joint specifically, plus checks of the hip, low back, and gait to rule out the conditions it mimics. Using several tests together, rather than any single one, is what makes the assessment reliable.
You'll leave your first visit knowing whether your SI joint is the source and what the plan is, in plain language. It's the same four steps every time: Listen, Assess, Treat, Teach.
Our evidence-informed treatment approach
SI joint care combines restoring motion with rebuilding stability, because a joint that flares needs both freedom and support:
- Adjustment & mobilization: to restore normal motion to the SI joint and pelvis, when appropriate.
- Soft-tissue therapy: to release the glutes and surrounding muscles that guard the joint.
- Core & glute stabilization: targeted exercise so the pelvis is supported and the joint stops flaring.
- Education: the positions, movement habits, and (in pregnancy) support that keep the joint calm.
This mirrors the evidence for SI joint dysfunction: manual therapy paired with stabilizing exercise, tailored to what set it off.
Think it might be your SI joint?
An unhurried assessment confirms the source and separates it from the disc, hip, and nerve. Then you get a clear explanation and an honest plan.
Exercises & prevention tips
These habits help keep the SI joint stable and calm. They're general guidance, not a substitute for an individualized plan. If the pain is severe or you're pregnant, get assessed first.
- Strengthen your glutes & core: the stabilizers that hold the pelvis steady.
- Balance your loading: avoid always standing on one leg or crossing the same way.
- Break up sitting: long sitting stiffens the pelvis; move regularly.
- Mind transitions: rise from sitting and get in and out of the car with control, not a twist.
- During pregnancy: a support belt and gentle stabilizing work can ease the load; ask what's right for you.
Why patients choose Alem for SI joint pain
Patients across San Francisco describe the same three things, again and again, in their own words, in their public reviews:
- Never rushed: a full, one-on-one visit and the careful testing SI pain requires.
- The right diagnosis: SI joint pain named correctly, not lumped in with generic back pain.
- Motion plus stability: restoring the joint and rebuilding the support that keeps it calm.
"He really helped my back start to heal and get back on track… I could feel an instant improvement in my back's health." — Alice S., verified 5-star review
Frequently asked questions
What is SI joint dysfunction?
The sacroiliac (SI) joints connect the base of your spine to your pelvis and transfer load between your back and legs. When one moves too much, too little, or becomes inflamed, it produces pain low on one side of the back or over the buttock. It's a common — and commonly overlooked — source of low back pain.
How is SI joint pain different from sciatica?
They can feel similar but come from different places. Sciatica is nerve pain that travels from the lower back down the leg, often below the knee. SI joint pain usually stays low and to one side — over the buttock, sometimes into the groin or upper thigh — and rarely goes past the knee. A hands-on exam can tell them apart, which is why an accurate assessment matters.
Can a chiropractor help SI joint pain?
Yes — SI joint dysfunction is one of the problems chiropractic care is best suited to. Dr. Daniel restores normal motion to the joint and pelvis, releases the muscles around it, and rebuilds the core and glute strength that stabilizes it, so the joint stops flaring.
Why did my SI pain start during or after pregnancy?
Pregnancy hormones loosen the pelvic ligaments to prepare for birth, which makes the SI joints more mobile and prone to irritation, especially as posture and weight shift. Gentle, pregnancy-appropriate care plus targeted stabilizing exercise can make a real difference — during pregnancy and postpartum.
How long does SI joint pain take to settle?
Many people feel meaningful relief within the first few visits as the joint's motion normalizes, with lasting results as the stabilizing muscles strengthen. Longstanding cases take a little longer. You'll always get an honest plan with a defined finish line.