SI Joint Pain or Hip Pain? The one-finger test most people miss
Same neighborhood, two different machines. If the ache sits at the back of your pelvis just below your belt line, that is your SI joint. If it sits deep in your groin and bites when you twist, that is your hip. Here is how to sort it in 60 seconds, then get the right care. Cash-pay, $40, walk in.
1334 E 41st St, Brookside, midtown Tulsa. Mon-Fri 10am-7pm and Sat 10am-2pm. Walk in, no appointment needed.
Quick answer
SI joint pain sits at the back of your pelvis, just below the belt line, on one side, right at the bony dimple called the PSIS. True hip pain sits at the front, deep in the groin or the front of the thigh, and gets worse when you rotate the leg. Location is your first and best clue. Once you know which machine hurts, the right care gets simple. Walk into Vanguard for a $40 exam, no contracts.
- Stand up, reach behind you, and point with one finger to the exact sorest spot.
- Finger lands on the bony dimple just below your belt line, low and to one side? That points to the SI joint.
- Finger drifts to the front of your hip or into your groin? That points to the hip.
- Note which movements flare it. Out of a car, rolling in bed, one-leg stand means SI. Twisting and pivoting means hip.
- If you have any of the red flags below, skip the clinic and go to the ER.
About one in four people with chronic low back pain are actually dealing with their sacroiliac joint, not a disc and not a muscle (Newman and Soto, American Family Physician, 2022). That is a big number, and it points at a common mix-up. People feel an ache low on one side of the pelvis, call it "hip pain," and chase the wrong fix for months. A si joint pain chiropractor sees this every week. The good news is you can usually tell the difference yourself, with one finger, before you ever book a visit.
This guide is the head-to-head no other Tulsa page gives you. We will walk through where each pain lives, the at-home test a si joint pain chiropractor uses in the exam room, what aggravates each one, what the research says about fixing them, and the warning signs that mean you skip the clinic and call your doctor. Every claim here is tied to a named study, so you are reading evidence, not opinion.
Where does SI joint pain hurt, and where does hip pain hurt?
Short answer: SI joint pain sits at the back of your pelvis, just below the belt line, on one side, right at the bony dimple called the PSIS. True hip pain sits at the front, deep in the groin or the front of the thigh, and gets worse when you rotate the leg. Location is your first and best clue.
The sacroiliac joint is where your spine meets your pelvis. It is a low-motion joint that only shifts a few millimeters and exists mostly to transfer load between your upper body and your legs. When it gets restricted or irritated, it produces a deep, one-sided ache low on the back of the pelvis. This is the pattern a si joint pain chiropractor sees most. According to NIH-hosted StatPearls (Raj, Ampat and Varacallo, updated 2023), SI pain is typically felt deep in the posterior hip and can refer down the back of the thigh toward the knee.
The hip itself is a ball-and-socket joint built for wide, multi-plane motion. When the hip joint is the problem, pain shows up in the groin and the front of the thigh, and it flares when you rotate or pivot. The same StatPearls review notes that true hip pathology drives groin and anterior hip pain, which is the opposite location from the SI joint. So when a patient tells me "it is right above my butt cheek on one side," I am already thinking SI. When they say "it is deep in my groin when I turn," I am thinking hip. That is why a si joint pain chiropractor always starts with one question: point to where it hurts.
If you are sorting out where your ache fits, our condition pages go deeper on each: read the SI joint pain page for the back-of-pelvis pattern, and the hip pain page for the front-of-groin pattern. Front-of-hip and groin tightness that feels like it is in the crease of your leg can also be a hip flexor problem, which is a third pattern worth ruling in or out.
The one-finger test you can do at home right now
Short answer: Stand up, reach behind you, and point with one finger to the exact sorest spot. If your finger lands on the bony dimple just below your belt line, low and to one side, that is the Fortin finger test and it points to the SI joint. If your finger drifts to the front of your hip or into your groin, that points to the hip.
This is not a parlor trick. It is the Fortin finger test, and it is in the medical literature. Newman and Soto (American Family Physician, 2022) describe it like this: the patient points with one finger, and the test is positive for the SI joint if the pain localizes within about one centimeter of the posterior superior iliac spine, the PSIS, which is that bony bump low and to the side of your spine. StatPearls (2023) describes the same landmark as a point just inferomedial to the PSIS, meaning slightly below and toward the midline.
Here is how to run it on yourself. Stand up. Put your hands on your hips so your thumbs naturally find the two dimples at the back of your waistband. Now take one finger and press on the single sorest point. Ask two questions. Can I cover the worst of it with one fingertip? And is that fingertip on the back of my pelvis below the belt line? Two yeses point toward the SI joint. If instead you find yourself rubbing the front of your hip or the crease of your groin, that points toward the hip joint.
One important caution. A self-test tells you which direction to look. It is not a diagnosis. The research backs that up. A 2021 systematic review with meta-analysis in the Journal of Orthopaedic and Sports Physical Therapy (Saueressig and colleagues) found that a cluster of three or more positive SI provocation tests reached roughly 94% sensitivity and 78% specificity for SI joint pain, but the authors flagged the evidence base as limited, so even the formal test cluster is a clinical aid, not the final word. That is why an in-person exam with a si joint pain chiropractor still matters. If you want to know what that exam looks like, here is what to expect on your first visit.
What makes SI pain flare versus what makes hip pain flare?
Short answer: SI joint pain flares with single-leg loading and pelvic shear: getting out of a car, rolling over in bed, standing on one leg to put on socks or pants, and climbing stairs. Hip pain flares with rotation and deep flexion: twisting, pivoting, and crossing the leg. The motions that hurt are a second strong clue.
Pain location is your first clue. What aggravates the pain is your second. The two joints get angry at completely different movements because they do completely different jobs.
StatPearls (2023) lists the classic SI aggravators: sitting, lying on the affected side, and stair climbing. AAFP (Newman and Soto, 2022) and the same review describe SI pain provoked by the kind of one-sided pelvic loading you feel when you step out of a car or stand on a single leg. Patients describe it in plain language all the time: it hurts worst getting out of the car, or standing on one leg to put a sock on. That is textbook SI behavior, because each of those moves shears the two sides of the pelvis against each other. When a patient lists those exact aggravators, a si joint pain chiropractor can usually call the joint before laying a hand on them.
| Clue | SI joint pain | True hip pain |
|---|---|---|
| Where it lives | Back of pelvis, one side, below belt line at the PSIS | Front, deep in the groin and front of thigh |
| One-finger test | Finger lands on the bony PSIS dimple | Finger drifts to groin or front of hip |
| Worst movements | Out of a car, rolling in bed, one-leg stand, stairs | Twisting, pivoting, crossing the leg, deep squat |
| Common triggers | Fall, collision, pregnancy, repetitive strain, prior fusion | Often gradual wear, hip rotation sports, labral strain |
| Referral pattern | Can ache into glute and back of thigh, usually stops above the knee | Groin and anterior thigh; below-the-knee pain points elsewhere |
One more rule worth memorizing. If your pain travels below the knee, that points away from an isolated SI joint and toward nerve or lumbar involvement (AAFP, 2022). Below-the-knee pain that runs down the back of the leg is more of a nerve pattern, so read our guides on sciatica and a pinched nerve if that sounds like you. Athletes who run a lot tend to load the SI and the hip hard at the same time, so runners with one-sided pelvic ache should also see our guide for runners.
Why pregnancy is such a common cause of SI joint pain
Short answer: During pregnancy your body releases relaxin, a hormone that loosens pelvic ligaments to make room for birth. That same laxity lets the SI joint move more than usual, which loads it and irritates it. StatPearls (2023) names pregnancy as a precipitating trigger for SI joint pain, which is why so many moms feel it during and after pregnancy.
If your SI pain started while you were pregnant or never fully left after you delivered, you are not imagining it, and there is a clear mechanical reason. The SI joint is held together by tough ligaments. Pregnancy floods the body with relaxin to soften those ligaments so the pelvis can open for delivery. The trade-off is that a looser pelvis lets the SI joint shift more than it is built to, and that extra motion shows up as a deep, one-sided ache at the back of the pelvis. StatPearls (2023) lists pregnancy right alongside falls, collisions, and repetitive strain as a known trigger for SI joint pain.
This is exactly why our pregnancy back pain page exists, and it is worth your time if you are expecting or newly postpartum. A si joint pain chiropractor who works with pregnant patients sees this relaxin-driven pattern constantly. Dr. Jason adjusts pregnant patients using gentle pelvic balancing techniques, and you can read more on the prenatal chiropractic page and the postpartum recovery page. To be clear and honest about credentials: Dr. Jason is not Webster certified. He uses pelvic balancing, not a certification he does not hold.
If you are pregnant, these signs mean call your OB-GYN or go to Labor and Delivery, not the chiropractor
Pelvic and back pain in pregnancy is usually mechanical and safe to treat. But some symptoms are not, and they need your obstetric team right away, not a chiropractic visit. Call your OB-GYN or go to Labor and Delivery for any of these:
- Preterm contractions or any signs of preterm labor
- Ruptured membranes (your water breaking) or any leaking fluid
- Placenta previa or a known placental abnormality
- Severe high blood pressure or preeclampsia signs: a severe headache, vision changes, or pain in the upper right belly
- Vaginal bleeding at any stage
- Reduced fetal movement
None of those are chiropractic problems. Go straight to your obstetric provider.
Can a chiropractor actually fix SI joint pain?
Short answer: Yes, conservative care helps, and a si joint pain chiropractor is a reasonable first stop. Research shows spinal and pelvic manipulation, exercise, or a combination of both improve SI joint pain and function. A 2019 randomized trial found manipulation and stabilization exercise both worked, with no real difference between them. The honest takeaway: this responds well to hands-on care plus the right exercises.
Here is where a si joint pain chiropractor earns the visit. The evidence for conservative, non-surgical care of the SI joint is real and worth knowing.
Journal of Bodywork and Movement Therapies, 2019 (Kamali and colleagues): A randomized controlled trial compared manipulation against stabilization exercise for SI joint dysfunction. Both groups improved meaningfully in pain and in Oswestry disability scores, with no significant difference between them.
What this means in plain terms: Hands-on manipulation works for the SI joint, and so do the right exercises. Doing both is reasonable. You have options.
For the full study: Kamali et al., 2019, on PubMed.
A more recent systematic review with meta-analysis adds weight. The 2024 review titled "The Utility of Sacroiliac Manual Therapy for Outcome Improvement in Patients With Sacroiliac Joint Pain and Dysfunction" in Archives of Physical Medicine and Rehabilitation pulled together ten randomized trials and concluded that SI manual therapy, with or without exercise, is an effective short-term option for improving pain and disability. The review was honest about limits: the disability gains were small and may not be clinically meaningful, and the horizon studied was short-term. That matches how I talk to patients. Manual care gives you a real window of relief, and you use that window to load the joint correctly with exercise so it holds. You can read the review here: Archives of Physical Medicine and Rehabilitation, 2024.
AAFP (2022) lands in the same place, naming physical therapy exercise programs, manipulation, or both as the first-line conservative approach for SI joint dysfunction. So the answer to "can a si joint pain chiropractor help my SI joint" is a confident yes, with the honest caveat that exercise is part of the plan and that we will refer out if something does not fit the mechanical picture. If your pain turns out to be coming from the hip joint instead, the path is different, which is why sorting the two correctly at the start saves you weeks. Our broader low back pain guide covers the surrounding territory.
When it is NOT just SI or hip: red flags that mean skip the clinic
Short answer: Most SI and hip pain is mechanical and safe to treat. But a short list of warning signs means you go to the emergency room or your doctor first, not a si joint pain chiropractor. These point to nerve, infection, fracture, or cancer-related problems that need medical care before any adjustment.
Honesty is part of good care. Some pain in this area is not a chiropractic problem at all, and a good si joint pain chiropractor tells you that plainly. Go to the emergency room or call your doctor right away if you have any of the following.
Go to the ER for any of these
- Cauda equina symptoms: numbness in the saddle area between your legs, loss of bladder or bowel control, or weakness in both legs. This is an emergency.
- Progressive neurological deficit: weakness that is getting worse, numbness that is spreading, or foot drop (your foot slapping or dragging).
- Signs of infection: fever along with back or pelvic pain, especially with recent IV drug use or a weakened immune system.
Call your doctor before any chiropractic visit if you have:
- A fracture history or recent significant trauma such as a hard fall or a car crash.
- A history of cancer with new pain in the back or pelvis.
These are not adjustment problems. Get them checked first. If you are pregnant, see the pregnancy warning list above and call your OB-GYN or Labor and Delivery.
If none of those apply and your pain matches the SI or hip pattern we walked through, you are a good candidate for a conservative exam and care. That is the everyday situation, and it is exactly what a walk-in visit is built for.
Why Tulsa patients choose Vanguard for SI and hip pain
Short answer: Vanguard is a cash-pay, $40-flat, walk-in chiropractor in Brookside, midtown Tulsa, veteran-owned, with Saturday hours. No insurance, no contracts, no packages. You can walk in the same day for a $40 exam and find out whether it is your SI joint or your hip.
If you have read this far and you still are not sure whether it is your SI joint or your hip, that is fine. That is what the exam is for. As a hip pain chiropractor tulsa patients can actually afford, Vanguard keeps it simple. It is forty dollars a visit. No insurance games. No contracts. You can stop any time. We are a walk-in chiropractor in Tulsa, so you do not need to schedule weeks out to get answers.
Dr. Jason Forward is a US Navy veteran and runs a high-volume cash model on purpose, so the price stays low and the door stays open to anyone in Brookside and midtown. As your si joint pain chiropractor, we will run the same finger test and provocation checks described above, sort SI from hip, and either start care or tell you straight if it is something that belongs with another provider. Seeing a si joint pain chiropractor early, before months of guessing, is usually what shortens the whole thing.
Walk in and find out what is actually hurting
No appointment needed. We will sort your SI joint from your hip and tell you the honest plan. Walk in. $40. No contracts. Stop any time.
- 1334 E 41st St, Brookside, midtown Tulsa
- $40 per visit, every visit, no packages
- Mon-Fri 10am-7pm and Sat 10am-2pm. Closed Sunday.
- Phone: (918) 948-7990
- Veteran-owned, cash-pay, Brookside-local. Easy street and lot parking.
Your local si joint pain chiropractor is one walk-in away. Learn more about SI joint care or about hip pain care.
Frequently asked questions
Can SI joint pain be mistaken for hip pain?
Yes, all the time. The two areas sit close together, so people lump them under "hip pain." The difference is location. SI joint pain sits at the back of the pelvis below the belt line at the PSIS, while true hip pain sits in the front, deep in the groin (AAFP, 2022; NIH StatPearls, 2023). Pointing with one finger to the sorest spot usually sorts it fast.
How do I know if my pain is from my hip or my SI joint?
Use location and movement. If your finger lands on the bony dimple at the back of your pelvis and it flares getting out of a car, rolling in bed, or standing on one leg, that points to the SI joint. If the pain is in your groin and flares when you twist or pivot, that points to the hip. A short exam confirms it.
Can a si joint pain chiropractor fix SI joint pain?
Conservative care helps. A 2019 randomized trial (Kamali et al.) found manipulation and stabilization exercise both improved SI pain and disability, and a 2024 Archives of Physical Medicine and Rehabilitation review found SI manual therapy is an effective short-term option. Most SI joints respond well to a si joint pain chiropractor combining hands-on care with the right exercises.
What does SI joint pain feel like?
It feels like a deep, one-sided ache low on the back of the pelvis, just below the belt line. It can spread into the glute and the back of the thigh, but it usually stops above the knee (NIH StatPearls, 2023). It tends to bark when you load one leg, like stepping out of a car or pulling on a sock.
Does SI joint pain go down the leg?
It can refer into the glute and the back of the thigh, but pain that travels below the knee points away from an isolated SI joint and toward nerve or lumbar involvement (AAFP, 2022). If your pain runs below the knee or feels like an electric line down the leg, that is more of a sciatica or pinched-nerve pattern and should be checked.
Why did my SI joint pain start during pregnancy?
Pregnancy releases relaxin, a hormone that loosens pelvic ligaments to make room for birth. That extra looseness lets the SI joint move more than usual, which loads and irritates it. NIH StatPearls (2023) lists pregnancy as a known trigger for SI joint pain, which is why it is so common during and after pregnancy.
What aggravates SI joint pain the most?
Single-leg loading and pelvic shear are the big ones: getting out of a car, rolling over in bed, standing on one leg to dress, and climbing stairs (AAFP, 2022; NIH StatPearls, 2023). Sitting for long stretches and lying on the painful side can also set it off. Twisting and pivoting tend to bother the hip more than the SI joint.
How much does it cost to see a si joint pain chiropractor in Tulsa?
At Vanguard Chiropractic, seeing a si joint pain chiropractor is $40 per visit, cash-pay, no insurance and no contracts. You can walk in to 1334 E 41st St in Brookside, midtown Tulsa, Monday through Friday 10am to 7pm or Saturday 10am to 2pm. Call or text (918) 948-7990.
References
- Newman DP, Soto AT. Sacroiliac joint dysfunction: diagnosis and treatment. American Family Physician. 2022. aafp.org.
- Kamali F, Zamanlou M, Ghanbari A, et al. Comparison of manipulation and stabilization exercises in patients with sacroiliac joint dysfunction. Journal of Bodywork and Movement Therapies. 2019. PubMed 30691749.
- The Utility of Sacroiliac Manual Therapy for Outcome Improvement in Patients With Sacroiliac Joint Pain and Dysfunction. Archives of Physical Medicine and Rehabilitation. 2024. ScienceDirect.
- Raj MA, Ampat G, Varacallo M. Sacroiliac joint pain. StatPearls, NCBI Bookshelf. Updated 2023. ncbi.nlm.nih.gov/books/NBK470299.
- Saueressig T, Owen PJ, Diemer F, et al. Diagnostic accuracy of clusters of pain provocation tests for detecting sacroiliac joint pain: systematic review with meta-analysis. Journal of Orthopaedic and Sports Physical Therapy. 2021. PubMed 34465145.
Medical disclaimer: This article is for general education and is not a substitute for an in-person evaluation. It does not diagnose your condition or guarantee any result. If you have any of the red-flag symptoms listed above, seek emergency or obstetric care first. Reviewed by Dr. Jason Forward, DC, June 2026.