The “Finger Test”
When a new patient walks into Elwart Family Chiropractic clutching their lower back, one of the first things we ask is: “Point with one finger to exactly where it hurts.”
If they sweep their hand across their entire lower beltline, it’s often a lumbar spine issue (discs or muscles).
But if they take one finger and point specifically to the bony knob just to the right or left of their spine, right at the top of the buttocks, we immediately suspect something else.
They aren’t pointing at their back. They are pointing at their Sacroiliac (SI) Joint.
“SI Joint Dysfunction” is the chameleon of the chiropractic world. It mimics a herniated disc. It mimics sciatica. It mimics hip bursitis. Because it is so good at disguising itself, many patients spend months treating their “bad back” with no relief, because the problem isn’t their back at all, it’s their pelvis.
Anatomy 101: The Keystone of Your Body
To understand why this joint causes so much trouble, you have to look at how you are built.
Your pelvis is shaped like a bowl. The sacrum is the triangular bone at the base of your spine (the “tailbone” area). It fits like a wedge, or a keystone in an arch, between your two hip bones (the ilium). Hence the name: Sacro-Iliac.

Unlike your knee or elbow, this joint isn’t designed to move much. It is a shock absorber. Its job is to transfer the weight of your upper body into your legs. It is held together by incredibly strong ligaments that prevent it from shifting more than a few millimeters.
But sometimes, “a few millimeters” is all it takes to cause agony.
The Dead Giveaway Symptoms
How do you know if you are dealing with an SI problem versus a Lumbar (lower back) problem? While only a physical exam can tell for sure, SI joint pain leaves some very specific clues.
1. The “Sit-to-Stand” Wince This is the classic sign. You feel okay while sitting in your recliner. But the moment you transition from sitting to standing, you feel a sharp, stabbing pain on one side of your lower back/buttock. You might have to hunch over for a few seconds before you can straighten up.
2. The One-Sided Ache Lumbar muscle strain often hurts across the whole back. SI pain is almost always unilateral (one side). It feels like a dull, boring ache deep in the glute on one side.
3. No Pain Below the Knee This is a major differentiator from Sciatica. True sciatica often shoots all the way to the foot. SI joint pain typically refers pain into the buttock, the groin, or the “side pocket” of the hip, but it rarely goes past the knee.
4. The “Uneven” Feeling Patients often tell us, “I feel like my hip is out,” or “I feel like one leg is longer than the other.” They aren’t imagining it. If the SI joint is locked or rotated, it physically tilts your pelvis, which can make one leg functionally shorter than the other.
Why Did This Happen?
You didn’t lift a heavy box. You didn’t fall. So why is your SI joint locked up?
- The “Step Down” Jolt: Stepping off a curb or a missed step on the stairs is a common cause. That sudden jarring force jams the wedge of the sacrum into the hip bone.
- Pregnancy: This is the #1 cause for women. During pregnancy, your body releases a hormone called relaxin to loosen your ligaments for birth. This makes the SI joints hyper-mobile and unstable.
- The Commute: Sitting for long periods (especially in bucket seats that curve your spine) weakens the glute muscles. When the glutes are weak, the SI ligaments have to do all the work, and they eventually get inflamed.
How We Unlock the Joint
If you have SI Joint Dysfunction, massage usually won’t fix it (because the joint is too deep), and traditional back exercises might irritate it. You need to restore the proper motion to that “keystone.”
At Elwart Family Chiropractic, we combine manual care with technology to fix this:
1. The Chiropractic Adjustment We use specific chiropractic adjustments designed to “unlock” the fixation. By applying a precise force to the ilium or sacrum, we can realign the pelvis. Many patients feel instant relief, like a pressure valve has been released.
2. PiezoWave Shockwave Therapy The pain from SI dysfunction often comes from the ligaments being chronically inflamed or developing scar tissue. We use PiezoWave shockwave therapy to send acoustic waves deep into the joint capsule. This increases blood flow and helps break down the adhesions that are keeping the joint stiff.
3. Intersegmental Traction You might know this as the “roller table.” This therapy is excellent for gently mobilizing the spinal column and the pelvic joints. It passively stretches the ligaments and muscles attached to the sacrum, helping to increase motion and circulate spinal fluids without putting stress on the injury.
4. Spinal Decompression If we find that the SI pain is complicated by compression in the lower lumbar discs, we may utilize Spinal Decompression. This gently stretches the lower back, taking pressure off the structures that sit directly above the pelvis.
10 Frequently Asked Questions About SI Joint Pain
1. Can an MRI see SI joint dysfunction? Often, no. An MRI is great for seeing soft tissue like discs, but SI joint dysfunction is a “movement” problem, not necessarily a structural break. It usually shows up better on a physical exam than on a scan.
2. Why does my hip hurt when I lie on it? Direct pressure on an inflamed SI joint (or the bursa next to it) can be excruciating. This is why many patients with this condition struggle to sleep on their side.
3. Is walking good for it? Yes, but shorten your stride. Taking long, lunging steps creates “shear” force across the pelvis. Shorter, brisk steps are better.
4. Can a chiropractor fix this, or do I need a shot? Steroid injections are a common medical treatment, but they only stop the pain temporarily. If the joint is mechanically stuck, the pain will return once the shot wears off. We aim to fix the mechanical sticking point.
5. Why does it hurt to put on my pants? Standing on one leg puts 100% of your weight through a single SI joint. If that joint is inflamed, the “shear” force is painful. We recommend sitting down to put on pants/socks until you heal.
6. Is heat or ice better? For the SI joint, ICE is usually superior. The joint is deep and often surrounded by inflammation. Ice helps calm that “hot” sensation.
7. Can this cause groin pain? Yes. Because of the way the nerves travel and the torque on the pelvis, SI dysfunction frequently refers pain around to the front of the groin or testicle/labia.
8. Do I have one leg shorter than the other? Structurally? Probably not. Functionally? Yes. When the pelvis rotates forward or backward due to a stuck SI joint, it pulls the leg up, making it appear shorter. We fix the rotation, and the legs usually even out.
9. Why does it hurt when I cross my legs? Crossing your legs puts a twisting torque directly on the sacroiliac ligaments. If you have this condition, sit with both feet flat on the floor.
10. How long does it take to fix? Because the SI joint is a weight-bearing joint used with every step you take, it can be stubborn. Relief often comes quickly (1-3 visits), but full stabilization typically takes 4-6 weeks of care.
Stop Chasing the Wrong Pain
If you have been treating “low back pain” for months with no results, you might be treating the wrong spot. You don’t have to live with that sharp catch every time you stand up from the dinner table.
Let’s figure out if your “Back Pain” is actually a “Pelvis Problem.”
At Elwart Family Chiropractic, we know exactly how to test for this and, more importantly, how to fix it using adjustments, traction, and shockwave therapy.Call us today at 586-741-5782 or visit us at 42958 Garfield Rd in Clinton Twp. Let’s get you back in alignment.