Key Takeaways
Sacroiliac joint pain often occurs near one side of the lower back or upper buttock. Patients may point to an area just below the beltline, near the back of the pelvis.
The SI joint transfers forces between the spine and legs. Although it moves only slightly, it plays an important role in supporting the body during standing, walking, and other activities.
Not every pain near the SI joint originates from that joint. Lumbar discs, facet joints, hip conditions, and surrounding muscles can produce similar symptoms.
Certain examination tests can help identify SI joint-related pain. A combination of findings is more useful than relying on one movement or assuming the pelvis is out of alignment.
Treatment depends on the underlying cause. Appropriate exercise, activity modification, and selected manual therapies may improve mechanical SI region pain.
Persistent or unusual symptoms may require additional evaluation. Inflammatory arthritis, neurological conditions, fractures, and other disorders must be considered when the history or examination suggests them.
Why Does One Side of Your Lower Back Hurt?
You stand up after sitting for an extended period and notice a sharp ache near the right side of your lower back.
The pain is not exactly in the middle of your spine. Instead, it seems concentrated near the back of your pelvis, just above the buttock.
Perhaps it becomes uncomfortable when climbing stairs, rolling over in bed, or getting out of the car.
You may find yourself pointing to a small area near the beltline when someone asks where it hurts.
Some patients assume they have a slipped disc. Others believe their hip is responsible.
But another possible source is the sacroiliac joint, commonly called the SI joint.
At Doyle Chiropractic in Huntersville, North Carolina, Dr. Geoffrey Doyle evaluates lower-back and pelvic pain by considering the relationship between the lumbar spine, sacroiliac joints, hips, and surrounding muscles.
The location of the discomfort can provide an important clue, but it does not establish the diagnosis.
A patient with pain near the SI joint may actually have a lumbar spine condition. Another may have a hip disorder or muscular problem producing discomfort in the same general area.
The challenge is determining which structure is most likely responsible.
Understanding the Sacroiliac Joint
The sacroiliac joints are located on either side of the sacrum, the triangular bone at the base of the spine.
Each SI joint connects the sacrum to the ilium, one of the large bones forming the pelvis.
These joints help transfer forces between the upper body and lower extremities.
When you walk, climb stairs, stand on one leg, or lift an object, forces travel through the lumbar spine, pelvis, and hips.
The sacroiliac joints contribute to the stability of this system.
Unlike the shoulder or hip, the SI joints are not designed for large amounts of movement.
They normally move only a few degrees, with motion varying among individuals.
Their strength comes from the shape of the joint surfaces and the surrounding ligaments and muscles that help stabilize the pelvis.
Why Such a Small Joint Can Cause Significant Pain
A joint does not need to move through a large range to become painful.
The sacroiliac region contains joint surfaces, ligaments, and surrounding tissues that can contribute to discomfort.
When these structures become sensitive, activities that transfer force through the pelvis may reproduce symptoms.
For example, standing on one leg while putting on pants may become uncomfortable.
Climbing stairs may increase pain because the pelvis must transfer forces as body weight shifts from one leg to the other.
Some patients experience discomfort when transitioning from sitting to standing or turning over in bed.
These patterns may raise suspicion for SI joint involvement, although they are not specific enough to confirm the diagnosis.
What Does Sacroiliac Joint Pain Feel Like?
Sacroiliac joint-related pain commonly occurs near the lower back and upper buttock.
Patients may point to an area just below and slightly to the side of the posterior superior iliac spine, the bony prominence sometimes associated with the small dimples at the back of the pelvis.
The discomfort may be concentrated on one side, although both sides can be involved.
Some patients describe a deep ache. Others experience sharper pain during certain movements.
Symptoms may extend into the buttock, lateral hip, groin, or upper thigh.
This referred pain can make SI joint dysfunction difficult to distinguish from lumbar or hip conditions.
Can SI Joint Pain Travel Down the Leg?
Yes, SI joint-related pain can sometimes extend into the leg.
However, pain traveling down the leg does not automatically indicate that the SI joint is responsible.
Lumbar nerve-root irritation, spinal stenosis, and other conditions can also produce leg symptoms.
The distinction becomes particularly important when patients report numbness, tingling, or weakness.
These neurological symptoms raise greater concern for nerve involvement and require an examination that extends beyond the SI joint.
A patient with pain extending into the buttock but normal neurological function may have a different condition from someone experiencing progressive leg weakness or altered sensation.
The pattern of symptoms helps guide the evaluation.
Why Sacroiliac Joint Pain Can Develop
SI joint-related pain does not always begin with a dramatic injury.
Sometimes symptoms develop gradually, while other cases follow a specific event.
Changes in Mechanical Loading
The sacroiliac joints transfer forces during walking, lifting, and other weight-bearing activities.
A sudden increase in physical activity or repeated loading may contribute to discomfort in susceptible individuals.
For example, a patient may notice symptoms after spending an entire weekend doing yardwork, repeatedly bending and lifting objects.
Another may develop discomfort after returning to running or increasing exercise intensity.
However, the presence of pain after activity does not prove that the SI joint has moved out of position.
Mechanical pain is often more complex than a simple alignment problem.
Pregnancy and Pelvic Girdle Pain
Pregnancy can alter the mechanical demands placed on the pelvis.
Hormonal changes, changes in body weight, and differences in muscular loading may contribute to pelvic girdle pain.
The sacroiliac region is one possible location of these symptoms.
Some patients experience discomfort when walking, climbing stairs, or rolling over in bed.
Pregnancy-related pelvic girdle pain should be evaluated in the context of the patient’s overall health and stage of pregnancy.
Treatment may involve appropriate exercise, activity modification, supportive strategies, and coordination with obstetric care when indicated.
Previous Injury or Surgery
Falls, motor vehicle accidents, and other traumatic events may injure structures around the pelvis.
In some patients, changes in movement or loading following lumbar spinal fusion may also contribute to SI joint-related symptoms.
However, persistent pain after injury or surgery requires a broad evaluation.
The clinician must consider lumbar spine conditions, hip problems, fractures, and other possible sources rather than assuming the SI joint is responsible.
Is Your SI Joint Really Out of Alignment?
Patients frequently describe their pelvis as being out of alignment or their SI joint as being out of place.
These expressions are common, but they can create a misleading picture of how the sacroiliac joint functions.
The SI joint is strongly supported by ligaments and surrounding structures. In ordinary mechanical pain, the joint is not typically dislocated or visibly displaced.
True sacroiliac dislocation is generally associated with significant trauma and represents a very different medical condition.
Subtle differences in pelvic position or movement may be observed during an examination, but commonly used palpation tests cannot reliably establish that one SI joint is misaligned.
Similarly, a temporary feeling of improvement after an adjustment does not prove that a displaced pelvic bone was put back into position.
A more useful clinical approach is to evaluate pain, movement tolerance, muscular function, and the patient’s ability to perform normal activities.
Treatment can be effective without assuming that the pelvis must be physically repositioned.
How SI Joint Pain Differs From a Lumbar Disc Problem
One of the most important parts of evaluating pain near the SI joint is distinguishing it from lumbar spine conditions.
A lumbar disc problem may produce lower-back pain, buttock discomfort, or symptoms extending into the leg.
If a nerve root becomes irritated, patients may experience tingling, numbness, or weakness.
SI joint-related pain can also involve the buttock and thigh, but it does not typically produce the same neurological deficits associated with significant nerve-root compression.
The examination considers whether symptoms change with lumbar bending, extension, or other movements.
Dr. Doyle may also assess neurological function and perform selected orthopedic tests to determine whether the lumbar spine is a more likely source.
Neither the location of pain nor a single examination maneuver can reliably distinguish every case.
The diagnosis depends on the overall pattern of findings.
How SI Joint Pain Differs From a Hip Problem
Hip conditions can also produce discomfort near the pelvis and buttock.
Hip osteoarthritis, for example, often causes groin pain and restricted hip rotation, but symptoms may extend into the buttock or thigh.
Gluteal tendon problems can produce pain along the outside of the hip.
These conditions may be mistaken for SI joint pain because the affected structures are close together.
A patient with hip osteoarthritis may have difficulty putting on shoes or rotating the leg inward.
Someone with greater trochanteric pain syndrome may experience tenderness along the outside of the hip and discomfort when sleeping on that side.
SI joint-related pain may be more concentrated near the posterior pelvis and aggravated by activities that transfer weight between the legs.
However, these are general patterns rather than definitive diagnostic rules.
A careful examination of both the lumbar spine and hip is important before concluding that the SI joint is responsible.
When Sacroiliac Pain May Be Inflammatory
Not all sacroiliac joint problems are mechanical.
Inflammation involving the sacroiliac joints is called sacroiliitis.
This can occur with inflammatory conditions such as axial spondyloarthritis.
Patients may experience chronic lower-back or buttock pain, prolonged morning stiffness, and symptoms that improve with movement rather than rest.
Some experience alternating buttock pain or discomfort that wakes them during the second half of the night.
Associated conditions may include psoriasis, inflammatory bowel disease, or certain forms of eye inflammation.
These findings deserve particular attention because inflammatory sacroiliitis requires a different diagnostic and treatment approach from ordinary mechanical SI region pain.
Medical evaluation may involve laboratory testing, imaging, and rheumatology consultation.
Chiropractic adjustments or routine exercise alone are not substitutes for appropriate management of an inflammatory disease.
Why Identifying the Correct Pain Generator Matters
A patient with pain near one side of the pelvis may have mechanical SI joint-related pain, a lumbar disc condition, hip arthritis, gluteal tendon dysfunction, or an inflammatory disorder.
Several of these conditions can produce discomfort in nearly the same location.
That is why treatment should not begin with the assumption that the SI joint is out of place.
At Doyle Chiropractic, Dr. Doyle considers the patient’s history, lumbar and hip movement, neurological findings, and selected SI joint provocation tests to narrow the possibilities.
When findings remain uncertain, further evaluation may be necessary. In selected persistent cases, image-guided diagnostic injections performed by an appropriate medical specialist may help determine whether the SI joint is contributing to pain.
The goal is to identify the most likely source of symptoms and determine whether conservative treatment, additional testing, or medical referral is the appropriate next step.
How Doyle Chiropractic Evaluates Sacroiliac Joint Pain
When a patient comes to Doyle Chiropractic with pain near one side of the lower back or pelvis, Dr. Geoffrey Doyle begins by determining whether the sacroiliac joint is the likely source or whether the symptoms originate from the lumbar spine, hip, or surrounding tissues.
The location of pain is helpful, but it is not enough to establish a diagnosis.
Dr. Doyle considers when the discomfort began, whether it followed an injury, and which activities reproduce the symptoms. Pain during stair climbing, rolling over in bed, or transitioning from sitting to standing may raise suspicion for SI joint involvement.
However, these activities can also aggravate lumbar and hip conditions.
The examination must therefore evaluate more than the painful location.
Examining the Lumbar Spine, Pelvis, and Hips
The physical examination may include lumbar range of motion, hip mobility, muscular strength, and assessment of walking and weight-bearing activities.
Dr. Doyle evaluates whether lumbar bending or extension reproduces the patient’s familiar symptoms.
Hip rotation and other movements may help identify conditions involving the hip joint.
Neurological testing may be appropriate when symptoms extend into the leg or include numbness, tingling, or weakness.
These findings help determine whether a lumbar nerve-root problem may be contributing.
Sacroiliac Joint Provocation Tests
When SI joint-related pain is suspected, Dr. Doyle may use several orthopedic tests designed to place controlled stress across the sacroiliac region.
These may include thigh thrust, compression, distraction, sacral thrust, and Gaenslen’s test.
The objective is to determine whether these maneuvers reproduce the patient’s familiar pain.
A combination of positive findings may increase suspicion for SI joint involvement, particularly when the history and other examination findings are consistent.
However, these tests are not perfectly accurate. Positive findings alone do not definitively establish the SI joint as the source of pain, while a largely negative group of tests can make SI joint-related pain less likely.
The examination is interpreted as a whole rather than relying on one test.
When Imaging or Medical Referral Is Appropriate
Routine imaging is not always necessary for uncomplicated mechanical pain near the SI joint.
X-rays may be useful when trauma, significant structural abnormalities, or certain inflammatory conditions are suspected.
MRI may be appropriate when the history suggests inflammatory sacroiliitis, neurological involvement, infection, or another condition requiring further investigation.
In selected patients with persistent symptoms and uncertain diagnosis, an image-guided diagnostic injection performed by an appropriate medical specialist may help determine whether the SI joint is contributing to the pain.
Dr. Doyle also considers warning signs such as significant trauma, fever, unexplained systemic symptoms, or progressive neurological deficits.
New bowel or bladder dysfunction, saddle anesthesia, or rapidly progressive leg weakness requires emergency evaluation.
The purpose of the examination is to identify when conservative treatment is appropriate and when another diagnostic approach is necessary.
Treatment Options for Sacroiliac Joint Pain
Treatment depends on whether the patient has mechanical SI joint-related pain, a lumbar or hip condition, or an inflammatory disorder.
When the examination supports a mechanical musculoskeletal problem, conservative care may help reduce discomfort and improve function.
Chiropractic Adjustments and Joint Mobilization
For appropriately selected patients, chiropractic adjustments or mobilization may be considered as part of a conservative treatment program.
Dr. Doyle evaluates the lumbar spine, pelvis, and hips to determine whether movement restrictions or mechanical sensitivity are contributing to the patient’s symptoms.
Manual treatment may help some patients experience improved movement tolerance and reduced discomfort.
However, the purpose is not to force a supposedly displaced SI joint back into position.
The sacroiliac joint is strongly supported by surrounding ligaments, and ordinary SI region pain does not generally indicate a true dislocation.
Treatment is directed toward comfortable movement and function rather than an assumed correction of pelvic alignment.
Strengthening the Muscles That Support the Pelvis
Exercise is often an important component of treatment for mechanical SI region pain.
The gluteal muscles, abdominal muscles, and other muscles surrounding the pelvis help control movement and transfer forces during everyday activities.
When these muscles have reduced strength or endurance, certain movements may become more uncomfortable.
A rehabilitation program may begin with gentle exercises that improve tolerance for basic movements.
Depending on the patient’s condition, these may include bridges, controlled hip strengthening, and exercises targeting trunk stability.
As symptoms improve, rehabilitation may progress toward activities such as step-ups, lifting, and single-leg balance.
The objective is to improve the body’s ability to tolerate normal loading rather than permanently restrict movement.
Soft-Tissue Treatment and Class IV Laser Therapy
Some patients with SI region pain also experience muscular tenderness involving the gluteal muscles, lumbar paraspinal muscles, or surrounding tissues.
Selected manual therapies may help address associated discomfort.
Doyle Chiropractic also offers Summus Class IV laser therapy, which may be considered as an adjunct for selected painful musculoskeletal conditions.
However, evidence for laser therapy specifically targeting SI joint-related pain remains limited.
Neither soft-tissue treatment nor laser therapy should be presented as a method of repositioning the pelvis or reversing an inflammatory joint disease.
These treatments are considered according to the examination findings and the patient’s response to care.
Activity Modification Without Unnecessary Rest
During a painful episode, temporarily reducing activities that repeatedly aggravate symptoms may be appropriate.
For example, a patient may need to modify heavy lifting, prolonged sitting, or certain exercises while symptoms are particularly sensitive.
However, prolonged inactivity can contribute to reduced strength and movement tolerance.
The goal is to maintain comfortable activity while gradually restoring normal function.
For many patients, walking, gentle mobility exercises, and progressive strengthening are more useful than avoiding movement altogether.
When Medical Treatment May Be Necessary
Persistent SI joint-related pain may require additional medical evaluation.
Selected patients may benefit from image-guided injections or other interventions performed by appropriate medical specialists.
When inflammatory sacroiliitis is suspected, medical treatment directed at the underlying inflammatory condition is essential.
Patients with axial spondyloarthritis may require rheumatology management, including medications that address inflammation and disease activity.
Surgical treatment is generally reserved for carefully selected patients with persistent, well-established SI joint-related pain that has not responded adequately to appropriate nonsurgical care.
The decision depends on the diagnosis, severity of symptoms, and functional limitations.
Recovery and Functional Outcomes
Recovery from mechanical SI joint-related pain varies according to the underlying cause, symptom duration, and the patient’s activity demands.
Some patients improve over several weeks with appropriate conservative care and gradual return to activity.
Others experience more persistent symptoms requiring a longer rehabilitation program or additional evaluation.
At Doyle Chiropractic, Dr. Doyle considers functional improvement alongside pain reduction.
A patient may notice that getting out of the car becomes easier, walking no longer produces significant discomfort, or climbing stairs feels more comfortable.
For someone who enjoys golf, gardening, or walking around Lake Norman, meaningful recovery may involve returning to those activities without repeatedly aggravating the lower back or pelvis.
Why Symptoms May Return After Temporary Relief
Some patients experience temporary improvement following manual treatment, stretching, or rest.
However, symptoms may return when they resume activities that place greater demands on the pelvis.
This does not necessarily mean the SI joint has slipped out of alignment again.
Instead, the tissues may still have limited tolerance for certain movements or loading demands.
For patients with mechanical symptoms, improving muscular strength, endurance, and movement tolerance may help support longer-term recovery.
The goal is to restore reliable function rather than create dependence on repeated temporary symptom relief.
The Dr. Doyle Perspective
When a patient points to one side of the lower back, just above the buttock, the sacroiliac joint is certainly one of the structures I consider.
But I do not assume that the SI joint is responsible simply because the patient points to that area.
I have seen how similar the symptoms of lumbar spine conditions, hip problems, and SI joint-related pain can be.
That is why I want to understand which movements reproduce the discomfort and whether the examination findings support a particular source.
For example, if a patient experiences pain when climbing stairs, rolling over in bed, or standing on one leg, I may become more interested in the sacroiliac region.
However, I still evaluate the lumbar spine and hips because those structures can produce similar symptoms.
I also pay attention to neurological findings.
If the patient reports numbness, tingling, or weakness extending into the leg, I want to determine whether a lumbar nerve-root problem may be involved.
One concept I explain frequently is that SI joint pain does not automatically mean the pelvis is out of alignment.
Patients sometimes arrive believing that one side of their pelvis has slipped out of place and needs to be put back.
While joint movement and muscular function can certainly contribute to discomfort, the sacroiliac joint is an exceptionally stable structure.
I would rather explain the problem in terms of pain sensitivity, mechanical loading, and movement tolerance than tell someone their pelvis is repeatedly becoming displaced.
When the examination supports mechanical SI joint-related pain, I may consider selected adjustments or mobilization, along with exercises designed to improve hip and trunk function.
I also want to know whether the patient’s symptoms suggest an inflammatory condition.
Someone with prolonged morning stiffness, chronic buttock pain that improves with movement, and other inflammatory symptoms may need rheumatology evaluation rather than routine mechanical treatment alone.
My responsibility is to distinguish these situations and explain the available options.
The most important part of evaluating SI joint pain is identifying whether the joint is actually contributing to the symptoms rather than treating every one-sided lower-back complaint as a pelvic alignment problem.
Our Clinical Experience
Pain near the sacroiliac joint illustrates how several different conditions can produce similar symptoms.
Consider three hypothetical presentations.
Presentation One: Mechanical Pain Near One Side of the Pelvis
A patient develops discomfort near the right side of the lower back after a weekend of repetitive lifting and yardwork.
The pain increases when standing on one leg or climbing stairs.
The examination reproduces the familiar discomfort during several SI joint provocation tests, while neurological findings are normal.
This presentation may raise suspicion for mechanical SI joint-related pain.
Treatment could include appropriate activity modification, selected manual therapy, and progressive strengthening.
Presentation Two: Lower-Back Pain With Leg Tingling
Another patient describes pain near the left SI joint but also experiences tingling extending into the lower leg.
The examination identifies findings suggesting possible lumbar nerve-root irritation.
In this situation, the lumbar spine may be a more important source of symptoms than the sacroiliac joint.
Neurological findings would guide the need for conservative treatment, imaging, or medical referral.
Presentation Three: Persistent Buttock Pain With Morning Stiffness
A third patient experiences chronic buttock discomfort, prolonged morning stiffness, and pain that improves with activity but becomes worse during prolonged rest.
The history raises concern for an inflammatory condition such as axial spondyloarthritis.
Further medical evaluation, potentially including rheumatology consultation, may be appropriate.
These examples are hypothetical and illustrate clinical reasoning rather than actual patient histories or guaranteed outcomes.
Frequently Asked Questions
Where is sacroiliac joint pain usually felt?
SI joint-related pain commonly occurs near one side of the lower back or upper buttock, often just below the beltline. Symptoms may sometimes extend into the hip, groin, or thigh.
Can SI joint pain feel like sciatica?
Yes. SI joint-related pain can extend into the buttock or leg and may resemble sciatica. However, numbness, tingling, or weakness raises greater concern for neurological involvement.
What makes SI joint pain worse?
Some patients experience increased discomfort during stair climbing, prolonged sitting, standing on one leg, or transitioning between positions. These activities are not specific enough to establish the diagnosis.
Can an SI joint really go out of alignment?
Ordinary mechanical SI joint pain does not generally mean the joint is dislocated. The joint is strongly stabilized, and common examination methods cannot reliably establish subtle pelvic misalignment.
Can chiropractic care help SI joint pain?
Selected patients with mechanical SI region pain may benefit from appropriate manual treatment and rehabilitation. Treatment should be based on examination findings rather than assuming the pelvis needs repositioning.
What exercises help sacroiliac joint pain?
Depending on the diagnosis, exercises targeting gluteal strength, trunk stability, and controlled movement may be useful. The program should match the patient’s symptoms and functional limitations.
Does SI joint pain show up on an MRI?
Some structural or inflammatory conditions may be visible on MRI, but mechanical SI joint-related pain does not always produce a specific imaging abnormality.
When should I see a rheumatologist for SI joint pain?
Chronic buttock or lower-back pain accompanied by prolonged morning stiffness, improvement with exercise, or other inflammatory symptoms may warrant evaluation for axial spondyloarthritis.
Final Thoughts
Sacroiliac joint pain can produce discomfort near one side of the lower back, upper buttock, or pelvis.
However, pain in this location does not automatically mean the SI joint is responsible.
Lumbar disc conditions, hip disorders, muscular dysfunction, and inflammatory diseases can produce similar symptoms.
A careful examination helps determine which structures are most likely involved and whether conservative treatment, additional imaging, or medical referral is appropriate.
At Doyle Chiropractic in Huntersville, North Carolina, Dr. Geoffrey Doyle evaluates lower-back and pelvic complaints by considering lumbar mobility, hip function, neurological findings, and sacroiliac joint provocation tests.
For patients throughout Huntersville, Cornelius, Davidson, and the Lake Norman area, the goal is to identify the likely source of pain, explain appropriate treatment options, and help restore comfortable movement.
Whether the discomfort occurs when walking, climbing stairs, getting out of the car, or performing everyday activities, meaningful recovery begins with understanding the underlying problem rather than assuming the pelvis is simply out of alignment.
