Hip arthritis is one of the more common causes of buttock pain, though it often goes unrecognized because most people associate hip problems with groin soreness. Research consistently shows that groin and buttock pain are both significantly more common in hip osteoarthritis than other pain locations.1PubMed Central. Hip osteoarthritis: where is the pain? The connection between the hip joint and buttock pain has a clear anatomical explanation, but getting the right diagnosis can be surprisingly tricky because several other conditions produce nearly identical symptoms.
How Hip Arthritis Sends Pain to the Buttock
The hip joint sits deep inside the pelvis, surrounded by layers of muscle and connective tissue. Nerves that supply the joint capsule branch off from the same trunks that serve the groin, thigh, and buttock. A systematic review of the hip joint’s nerve supply found that the anterior (front) capsule is consistently supplied by the femoral and obturator nerves, while the posterior (back) capsule is supplied by the nerve to the quadratus femoris.2PubMed. Sensory Innervation of the Hip Joint and Referred Pain: A Systematic Review of the Literature That posterior nerve is the key player in buttock pain. When arthritis inflames the joint lining or damages cartilage, pain signals travel along these posterior nerve fibers and the brain registers the sensation as coming from the buttock rather than the joint itself. This is referred pain, and it is a well-documented feature of hip disease.
The same review noted that the posterosuperior labrum, which is the ring of cartilage that lines the hip socket’s rim, is rich in pain-sensing nerve fibers and receives innervation from a branch of the superior gluteal nerve. The researchers concluded that both the nerve to the quadratus femoris and this superior gluteal branch contribute to posterior, or buttock, pain referred from the hip.3Pain Medicine. Sensory Innervation of the Hip Joint and Referred Pain: A Systematic Review of the Literature – Section: Discussion So the anatomy provides at least two distinct nerve pathways capable of generating buttock pain when the hip joint is diseased.
How Common Is Buttock Pain Among People With Hip Arthritis
The groin gets most of the attention, but buttock pain is far from rare. A study of primary care patients with hip osteoarthritis asked participants to mark their pain locations on a body map. Roughly 38% marked the buttock area, making it the fourth most commonly reported site after the greater trochanter region (77%), the groin (53%), and the anterior or lateral thigh (42%).4Family Practice. Pain distribution in primary care patients with hip osteoarthritis A separate study specifically examining hip osteoarthritis that developed from developmental dysplasia of the hip found a very similar figure: 38% of affected hips produced buttock pain, with groin pain remaining the most common location at 89%.5PubMed. Distribution of hip pain in osteoarthritis patients secondary to developmental dysplasia of the hip
The consistency of that roughly four-in-ten figure across different patient groups suggests it is a reliable estimate. What varies is how many pain sites each person reports. Many people with hip arthritis do not have pain in just one spot. They often mark multiple areas simultaneously, especially as the disease progresses. That overlap is part of what makes the buttock component easy to miss: if someone also has groin pain, clinicians tend to focus there and attribute the buttock pain to something else.
Why Buttock Pain From the Hip Gets Misdiagnosed
The buttock is a crossroads of pain signals from multiple structures, and hip arthritis is just one of them. Low back problems, sacroiliac joint dysfunction, sciatica, and hip arthritis can all produce pain in the same general area. Patients with both hip and lumbar spine disease frequently report overlapping complaints that include low back pain along with buttock, groin, thigh, and even knee pain, making it difficult to identify the primary pain generator.6Journal of the American Academy of Orthopaedic Surgeons. Differentiating Hip Pathology From Lumbar Spine Pathology: Key Points of Evaluation and Management
Sciatica and hip osteoarthritis share particularly confusing overlap. Both conditions can cause buttock and leg pain, altered walking patterns, and reduced hip movement. Imaging adds another layer of confusion because asymptomatic degenerative changes are extremely common on MRI and X-ray in both the hip and the lumbar spine, especially with age. A review of the diagnostic challenge between the two conditions emphasized that imaging findings should always be interpreted alongside the clinical exam, because abnormalities visible on a scan do not necessarily explain a patient’s pain.7PubMed Central. Differentiating Sciatica from Hip Osteoarthritis: Diagnostic Challenges and the Role of the Athena Sign
The situation gets even murkier when someone has what clinicians call the “hip-spine syndrome,” meaning they have genuine disease in both the hip joint and the lumbar spine simultaneously. In those cases, the buttock pain may come from both sources at once, and treating only one may leave significant pain behind.
Other Conditions That Produce Similar Buttock Pain
Because buttock pain has such a long list of possible causes, it helps to know what else might be going on, especially if hip arthritis has been ruled out or if symptoms do not improve with treatment aimed at the hip.
- Deep gluteal syndrome: This involves compression or irritation of the sciatic nerve or other peripheral nerves in the deep gluteal space, the area behind the hip joint. It includes piriformis syndrome, ischiofemoral impingement, and proximal hamstring conditions.8PubMed Central. Deep Gluteal syndrome: An underestimated cause of posterior hip pain These conditions produce buttock pain that may radiate down the leg, closely mimicking both hip arthritis and sciatica.
- Gluteal tendinopathy: Degeneration or irritation of the gluteal tendons where they attach to the greater trochanter is one of the most common causes of hip-area pain in older adults, alongside hip osteoarthritis itself. The two conditions share pain locations and altered walking patterns but are distinct problems requiring different treatments.9PubMed. Gluteal tendinopathy and hip osteoarthritis: Different pathologies, different hip biomechanics
- Sacroiliac joint dysfunction: The sacroiliac joint sits just behind the hip and can produce deep buttock pain that overlaps with hip-referred pain. Sacroiliitis, trochanteric bursitis, and hip arthritis can all masquerade as gluteal pain and are sometimes only distinguished through targeted diagnostic injections.10Journal of the American Academy of Orthopaedic Surgeons. Deep Gluteal Pain in Orthopaedics: A Challenging Diagnosis
- Labral tears: Damage to the cartilage ring lining the hip socket most commonly causes groin pain, but buttock pain is a less common presentation. One study found groin pain in 92% of labral tear patients, with buttock pain occurring in a smaller subset.11Journal of Bone and Joint Surgery. Clinical Presentation of Patients with Tears of the Acetabular Labrum Because labral tears often precede or coexist with hip arthritis, distinguishing the two can be difficult.12PubMed Central. A comprehensive review of hip labral tears
- Inflammatory spinal arthritis: Conditions like axial spondyloarthritis primarily affect the sacroiliac joints and spine but can cause severe buttock and hip pain. One reported case involved a patient whose persistent buttock pain turned out to be piriformis syndrome developing alongside her spinal inflammatory disease, illustrating how multiple pain generators can coexist and confuse the picture.13PubMed Central. Piriformis syndrome as an overlooked cause of pain in a patient with axial spondyloarthritis: a case report
The breadth of this list is itself the problem. Clinicians dealing with buttock pain need to systematically work through these possibilities, and many patients end up seeing multiple specialists before the source is identified.
How Clinicians Figure Out Whether the Hip Is the Source
Physical examination remains the starting point. A clinician will typically assess how the hip moves through its range of motion, check for pain during specific maneuvers that stress the hip joint, evaluate your gait, and perform neurological testing to screen for nerve-related causes like sciatica. The pattern of findings helps narrow the field. Hip arthritis tends to restrict internal rotation early and provokes pain when the joint is loaded in specific ways. Neurological deficits like numbness, tingling, or weakness in a specific nerve distribution point more toward a spinal or nerve-compression cause.
When the exam and imaging leave room for doubt, a diagnostic injection into the hip joint can help settle the question. A local anesthetic injected directly into the hip under ultrasound or X-ray guidance temporarily numbs the joint. If the buttock pain goes away for the duration of the anesthetic, the hip joint is almost certainly contributing. If the pain stays the same, the hip is less likely to be the primary culprit. Research shows these diagnostic injections provide substantial pain relief for patients with various hip pathologies and that failing to respond to an injection is a strong predictor that hip surgery will not help.14PubMed. Outcomes After Diagnostic Hip Injection Ultrasound-guided injection has been found useful for confirming that hip pathology is responsible for a patient’s symptoms, reducing the risk of unnecessary procedures aimed at the wrong structure.15PubMed. Evaluation of ultrasound-guided diagnostic local anaesthetic hip joint injection for osteoarthritis
This approach is especially valuable when buttock pain is the dominant symptom, because it sidesteps the guesswork of trying to distinguish hip-referred pain from the many other causes based on symptoms alone.
How Hip Arthritis Changes the Gluteal Muscles
Beyond referred nerve pain, hip arthritis also affects the gluteal muscles themselves, which can add another layer of buttock discomfort. The gluteus minimus and gluteus medius are the main muscles on the side and back of the hip. They stabilize the pelvis during walking and are under considerable strain with every step.
A study comparing gluteal muscle activity during walking in people with hip osteoarthritis and matched controls found that the osteoarthritis group had a significantly higher burst of activity in the posterior portion of the gluteus minimus during early stance. This increased muscle effort was more pronounced as the severity of osteoarthritis increased.16PubMed. Comparison of gluteus medius and minimus activity during gait in people with hip osteoarthritis and matched controls In practical terms, this means the muscles around the arthritic hip are working harder than they should during everyday walking, which can contribute to muscle fatigue, soreness, and stiffness in the buttock and hip region over time. The pain a person experiences may therefore be a combination of referred pain from the joint and overuse-related muscle pain from the compensating gluteal muscles.
Exercise and Rehabilitation for Buttock Pain From Hip Arthritis
If your buttock pain is linked to hip osteoarthritis, targeted gluteal exercise is one of the more promising approaches. The reasoning follows directly from the muscle-compensation pattern described above: if the gluteal muscles are working harder to compensate for a damaged joint, strengthening them can help them handle the extra load more efficiently, potentially reducing both the muscular component of pain and the overall disability.
A clinical trial protocol specifically designed for this problem combined gait retraining, motor control exercises, and progressive high-intensity resistance training targeting the gluteal muscles in people with mild to moderate hip osteoarthritis.17PubMed Central. Targeted gluteal exercise versus sham exercise on self-reported physical function for people with hip osteoarthritis (the GHOst trial) The idea is not just generic strengthening but exercises chosen to address the specific patterns of muscle weakness and altered movement that hip arthritis creates.
A systematic review of gluteus medius weakness and its management found that hip abductor strengthening exercises improved functional outcomes in people with related conditions. One study within that review reported that just three weeks of targeted hip abductor strengthening cut pain by nearly half in people with nonspecific low back pain.18Physical Therapy Korea. Understanding and Exercise of Gluteus Medius Weakness: A Systematic Review While that particular result was in low back pain patients rather than hip arthritis specifically, it underscores how meaningful gluteal strength can be for pain conditions in the hip and pelvis region. If you are dealing with buttock pain from hip arthritis, working with a physical therapist who can prescribe gluteal exercises tailored to your movement patterns is worth pursuing before considering more invasive options.
When the Nervous System Amplifies the Pain
Some people with hip arthritis have pain that seems disproportionate to what the X-rays show, or pain that spreads well beyond the hip and buttock into areas that do not have an obvious anatomical connection. This can be a sign that the nervous system itself has become more sensitized to pain signals, a phenomenon where the brain and spinal cord start amplifying pain even from mild stimuli.
A study of hip osteoarthritis patients found that those who reported pain spread across a wider area on body diagrams showed more signs and symptoms consistent with this kind of nervous-system amplification.19PubMed. The Extent of Pain Is Associated With Signs of Central Sensitization in Patients With Hip Osteoarthritis The researchers noted that pain drawings, where patients shade in all the areas that hurt, could be a useful clinical tool for identifying who might be experiencing this process.
This matters because when the nervous system is amplifying signals, treating only the hip joint may not fully resolve the buttock pain. A person in this situation might have a successful hip replacement and still experience lingering pain. Recognizing the pattern early helps clinicians offer additional strategies, such as pain education, graded exercise, and sometimes medications that target nerve sensitization, rather than pursuing more aggressive joint-focused treatments that may not address the real driver.
Buttock Pain That Persists After Hip Replacement
For many people with advanced hip arthritis, total hip replacement brings dramatic relief. But a subset of patients continue to have buttock or hip-area pain after surgery, sometimes for months or longer. Once the implant has been confirmed to be well-positioned and infection has been ruled out, the possible explanations multiply. Soft-tissue sources of pain after hip replacement are numerous and can be challenging to diagnose, partly because patients present at different stages of recovery and some of these conditions overlap with each other.20PubMed Central. Soft-Tissue Sources of Extra-articular Pain Following Total Hip Arthroplasty: A Comprehensive Review
Possible culprits include irritation of the muscles and tendons disrupted during surgery, nerve damage or entrapment from the surgical approach, bursitis around the new implant, and referred pain from the lumbar spine that was present all along but masked by the more severe hip pain. In some cases, the buttock pain a person attributed to hip arthritis was actually coming from the back or the sacroiliac joint the entire time, and removing the arthritic hip simply unmasked the other source.
This post-surgical scenario further illustrates why pinpointing the exact origin of buttock pain before surgery matters so much. Diagnostic injections, careful physical examination, and an honest appraisal of whether the pain pattern truly matches the hip joint can all help set realistic expectations for what surgery will and will not resolve.
Anatomical Variation and Why Your Pain Map May Differ
Not everyone’s nerves follow the same blueprint. The obturator nerve, one of the key nerves supplying the hip joint, shows considerable variation from person to person. A review of anatomical studies found that the obturator nerve typically sends one branch to the hip joint, but this single branch can originate from different parts of the nerve: from the common trunk in about 62% of cases, from the anterior branch in about 19%, or from the posterior branch in a small percentage.21PubMed Central. Obturator Nerve Variations: A Narrative Review These variations help explain why two people with similar degrees of hip arthritis can have very different pain experiences. One person may feel the pain predominantly in the groin, another in the buttock, and a third in the thigh or knee. Individual anatomy is part of the reason that the textbook description of hip pain, which emphasizes the groin, fails to capture the experience of a significant portion of patients.
This variability also has practical implications for nerve block procedures. When clinicians attempt to numb specific nerves around the hip for diagnostic or therapeutic purposes, the success of the block depends on knowing where those nerve branches actually run. Anatomical variability means that a standard approach may work differently from person to person, which is one reason diagnostic hip injections that target the joint space itself remain the most reliable way to test whether the hip is the source of someone’s pain.