Groin pain in older adults stems from a surprisingly wide range of causes, and the source is often not what the person first suspects. While hip osteoarthritis accounts for a large share of cases, the list extends to hernias, fractures that happen without a fall, infections, blood-thinning medication complications, inflammatory diseases, and organs that refer pain to the groin from elsewhere in the body. Sorting out the real culprit matters because several of these causes require urgent treatment, and a wrong assumption can lead to dangerous delays.
Hip Osteoarthritis Is the Most Common Culprit
The single most frequent reason an older person develops groin pain is wear-and-tear arthritis of the hip joint. The hip socket sits deep in the pelvis, and when its cartilage thins, the aching sensation tends to concentrate in the front of the hip and the groin rather than the buttock or outer thigh, which surprises many people. Movement typically worsens it, especially getting in and out of a car, climbing stairs, or walking longer distances. Stiffness after sitting is common. A plain X-ray usually confirms the diagnosis when the joint space looks narrowed, and an examination that reproduces groin pain when the hip is rotated inward is a strong clinical clue.
What makes hip arthritis tricky in older adults is that it can coexist with other groin-pain generators. Someone with a moderately arthritic hip might also have a hernia, a spinal problem, or a stress fracture, and attributing all the pain to the arthritis alone means the second problem goes unrecognized. Clinicians sometimes call this “dual pathology,” and it is more common in the elderly than in younger patients simply because older bodies accumulate more conditions at once.
Fractures That Happen Without a Fall
When most people hear “hip fracture,” they picture a dramatic fall. But in older adults with weakened bone, fractures can develop gradually through normal daily activity. These are called insufficiency fractures, and they are an underappreciated cause of groin and thigh pain that worsens with weight-bearing. Standard X-rays sometimes miss them early on, and an MRI or bone scan is often needed to catch the fracture line.
A particular type of insufficiency fracture has drawn attention over the past two decades: the atypical femoral fracture linked to long-term use of bisphosphonate medications commonly prescribed for osteoporosis. These fractures tend to occur along the upper shaft of the thighbone rather than through the femoral neck, and they often announce themselves with weeks or months of dull groin or thigh pain before the bone actually breaks through completely.1PubMed Central. Atypical femoral fracture On imaging, the hallmark is a transverse line of radiolucency through a thickened area of the outer cortex of the femur.2AJR Am J Roentgenol. Diagnosis of proximal femoral insufficiency fractures in patients receiving bisphosphonate therapy Recognizing this pattern matters enormously because if the warning pain is ignored, the bone can snap completely during a simple step, turning a manageable problem into a surgical emergency.
If you are over 65 and have been taking a bisphosphonate for several years, new or unexplained groin or thigh pain deserves imaging even in the absence of any injury. This is one of the clearest examples where the cause of elderly groin pain is directly tied to a medication the person is already taking for another age-related condition.
Groin Hernias and Their Dangerous Complications
Inguinal hernias, where a loop of intestine or fatty tissue pushes through a weak point in the abdominal wall near the groin crease, become more common with age as connective tissue loses strength. Many groin hernias in older adults cause a dull ache that worsens with coughing, straining, or standing for long periods, and a visible or palpable bulge is the classic giveaway. A hernia that can be gently pushed back in is uncomfortable but not immediately dangerous. The real risk is incarceration or strangulation, where the protruding tissue gets trapped and its blood supply is cut off.
Emergency hernia repair in the elderly carries higher stakes than elective surgery. In a study of emergency groin hernia operations, patients over 75 had substantially more comorbidities than younger patients, and bowel resection was needed in a disproportionate number of the oldest group.3BMC Surgery. Emergency groin hernia repair: implications in elderly The takeaway is straightforward: elective repair of a groin hernia in an otherwise stable older person is far safer than waiting until the hernia strangulates and forces an emergency operation. If you or an older family member has a known groin hernia that has been managed with “watchful waiting,” any sudden increase in pain, especially with nausea, vomiting, or inability to push the bulge back in, warrants immediate medical attention.
Obturator Hernia, a Rare but Serious Mimic
Most clinicians go an entire career without seeing an obturator hernia, yet it disproportionately strikes one specific group: thin, elderly women. In this condition, abdominal contents herniate through the obturator canal, a small opening in the pelvis normally filled with a nerve and blood vessels. The symptoms are maddeningly vague: inner thigh pain, groin aching, nausea, or vomiting, with no visible bulge on physical exam because the hernia is deep inside the pelvis.4PubMed. Leg Pain-An Unexpected Twist Because the presentation mimics so many other problems, diagnosis is often delayed until bowel obstruction develops.
A classic clue is the Howship-Romberg sign, pain along the inner thigh that worsens when the hip is internally rotated or extended, caused by the hernia pressing on the obturator nerve. CT scanning has improved detection significantly, and bedside ultrasound in the emergency department has also been reported to identify obturator hernias in frail older women presenting with sudden-onset inner thigh pain.5PubMed Central. A Rare Cause of Medial Thigh Pain: Does Point-of-Care Ultrasound Scan Have a Role in the Diagnosis of Obturator Hernia in the Emergency Room? Awareness of this possibility is the main barrier to diagnosis; once a clinician thinks of it, the imaging usually confirms it quickly.
Pain Referred from the Lumbar Spine
The nerves supplying sensation to the groin originate in the lower spine, which means that a problem at the level of the spine can produce pain felt entirely in the groin, with no back pain at all. Lumbar disc herniations, spinal stenosis, and facet joint arthritis can all refer pain to the groin, inner thigh, or front of the hip. In older adults who frequently have degenerative spinal changes on imaging anyway, figuring out whether the spine is the true pain source or just an innocent bystander on the scan is one of the harder diagnostic puzzles in musculoskeletal medicine.
A review of musculoskeletal conditions that mimic lumbosacral radiculopathy catalogued more than 30 disorders, including hip and knee osteoarthritis, lumbar facet syndrome, myofascial pain syndrome, and greater trochanteric pain syndrome, each of which can overlap with or be confused for spinal nerve irritation.6PubMed Central. Musculoskeletal mimics of lumbosacral radiculopathy What this means practically is that an older person with groin pain who also has degenerative changes in the lumbar spine on an MRI does not automatically have a spinal cause for the pain. The clinical examination, including whether specific hip or spinal movements reproduce the groin pain, is more important than the imaging alone.
Iliopsoas Problems and Soft-Tissue Injuries
The iliopsoas is a large muscle-tendon complex that runs from the lower spine through the pelvis to attach at the upper thighbone. It is the main hip flexor, the muscle you use to lift your knee. In older adults, the iliopsoas can develop tendinopathy, bursitis, or even spontaneous rupture, all of which produce deep groin pain that is often hard to localize precisely.
Spontaneous iliopsoas tendon rupture with intramuscular bleeding is rare but illustrative of how deceptive groin pain can be in this age group. A reported case involved a 90-year-old woman on long-term warfarin for atrial fibrillation who developed dull left groin pain radiating to the lower back and significant loss of mobility, all without any history of recent trauma. Pelvic X-rays showed no fracture, but CT imaging revealed a large soft-tissue mass tracking along the iliacus muscle and extending to the lesser trochanter, consistent with a spontaneous tendon rupture and intramuscular hematoma.7PubMed Central. Unexplained Groin Pain in the Elderly: Spontaneous Iliopsoas Tendon Rupture With Haematoma in a 90-Year-Old Woman Cases like this remind clinicians that when plain X-rays are normal and the pain does not fit a typical arthritis pattern, cross-sectional imaging with CT or MRI often reveals the true source.
Bleeding Complications from Blood Thinners
Anticoagulant medications, including heparin and warfarin, are widely prescribed in older adults for conditions like atrial fibrillation, deep vein thrombosis, and heart valve replacement. A known complication is spontaneous bleeding into the iliopsoas muscle, forming a hematoma that presses on surrounding nerves and produces groin pain, sometimes accompanied by weakness in the leg and a drop in blood counts.
Patients on heparin anticoagulation who develop groin pain are at increased risk of harboring an iliacus or psoas hematoma, which can range in severity from localized aching to massive bleeding and shock.8PubMed. Spontaneous iliopsoas hematoma in patients with unstable coronary syndromes receiving intravenous heparin in therapeutic doses The symptoms are often nonspecific, presenting as back or groin pain, anemia, and leg weakness, which makes early recognition difficult.9International Journal of Surgery Case Reports. Psoas hematoma in the elderly patient, a diagnostic challenge, a case report This is an important consideration for any older person on anticoagulation who develops new, unexplained groin or flank pain, particularly if lab work shows a falling hemoglobin level. A CT scan is the standard way to confirm or rule out retroperitoneal or intramuscular bleeding.
Infections Around the Hip and Pelvis
Septic arthritis of the hip joint and deep pelvic abscesses are uncommon but life-threatening causes of groin pain in older adults, especially those with weakened immune systems from diabetes, cancer, or immunosuppressive medications. Infection in the hip joint itself typically causes severe groin pain with an inability to bear weight, and fever may or may not be present in the elderly because the immune response is often blunted with age.
Iliopsoas abscesses can develop from bloodstream spread of bacteria (particularly in people with diabetes or recent urinary infections) or from direct spread of infection from an adjacent structure. In one reported case, a 69-year-old man with a history of multiple cancers presented with advanced septic shock due to a right iliopsoas abscess that had communicated with the hip joint, causing septic arthritis and extensive soft-tissue destruction in the buttock.10PubMed Central. A Devasting Course of an Iliopsoas Muscle Abscess Subsequently Leading to Septic Shock, Septic Hip Arthritis, and Extended Gluteal Soft Tissue Necroses in an Elderly Immunocompromised Patient with Multiple Carcinomas: A Case Report and Brief Review of Literature In another case, a 78-year-old woman developed persistent hip and groin pain after spinal surgery, and investigation eventually revealed septic hip arthritis with an iliopsoas abscess and a spinal abscess at the surgical site.11Hip & Pelvis. Septic Hip Arthritis with Iliopsoas Abscess Detected after Spine Operation
The thread running through these cases is delay. When an older immunocompromised person has groin pain with fever, weight loss, elevated inflammatory markers, or a recent procedure, infection should be on the diagnostic radar from the outset, not after weeks of empirical treatment for presumed arthritis.
Polymyalgia Rheumatica
Polymyalgia rheumatica, often shortened to PMR, is a chronic inflammatory disease that occurs almost exclusively in people over 50, with a peak incidence around age 70 to 80. It causes pain and pronounced morning stiffness in the muscles of the neck, shoulder girdle, and hip girdle, and groin pain or difficulty rising from a chair can be a prominent feature.12PubMed Central. Polymyalgia rheumatica: An update The hallmark is bilateral involvement: both shoulders ache, both hips feel stiff. Blood tests typically show markedly elevated inflammatory markers, and symptoms respond dramatically to low-dose corticosteroids, often within days.
PMR deserves mention here because groin and hip girdle pain can sometimes be its most prominent symptom, leading to workups focused on the hip joint itself. When hip X-rays look relatively normal for age and the pain is bilateral with morning stiffness, PMR should be considered. Contrast-enhanced MRI of the pelvis in PMR patients often reveals a characteristic pattern of inflammation outside the hip capsule itself, involving bursae and soft tissues around the hip, which helps distinguish it from intra-articular hip disease.13PubMed. Diagnostic capability of contrast-enhanced pelvic girdle magnetic resonance imaging in polymyalgia rheumatica This extracapsular pattern explains why the groin pain of PMR feels more diffuse and muscular than the pinpoint ache of hip arthritis.
Nerve Entrapment in the Groin
Several small nerves pass through the groin region, and compression or irritation of any of them can produce chronic groin pain that is particularly stubborn. The ilioinguinal, iliohypogastric, and genitofemoral nerves are the most commonly involved. Entrapment can result from previous abdominal or groin surgery (hernia repair is a well-known trigger), scar tissue, or simply the anatomical changes that occur with aging.
The pain is typically burning or stabbing, worsened by certain positions or activities, and often difficult for the person to describe precisely. Diagnosis is largely clinical, based on the character and distribution of the pain, and confirmed when a diagnostic nerve block temporarily eliminates the symptoms. In fact, targeted nerve blocks of the ilioinguinal, iliohypogastric, and genitofemoral nerves are both a diagnostic tool and a treatment option for chronic pelvic and groin pain that has not responded to other measures.14Journal of Kerman University of Medical Sciences. Comparison of Ilioinguinal/Iliohypogastric Nerve Block and Ilioinguinal/Iliohypogastric Nerve Block Plus Genitofemoral Nerve Block in Patients with Chronic Pelvic/Groin Pain: A Retrospective Quasi-experimental Study For older adults who have undergone prior hernia surgery and develop chronic groin pain months or years later, nerve entrapment is one of the more likely explanations.
Kidney Stones and Other Visceral Sources
Groin pain does not always come from the groin. Organs that share nerve pathways with the groin region can refer pain there, and the most common visceral culprit is a kidney stone lodged in or passing through the ureter. A stone in the lower ureter classically causes pain that radiates from the flank or lower back into the groin and sometimes into the testicle or labia. Older adults develop kidney stones at a meaningful rate, and the pain can be confused with a musculoskeletal problem, especially if the flank component is mild. Imaging with CT confirms the stone, and treatment depends on its size and location.15Pharmaceutical Care España. Treatment trends for left ureteric calculus (Nephrolithiasis) in Department of Urology, a case study
Other visceral sources of referred groin pain include aortic aneurysms (particularly when expanding or leaking), ovarian pathology in women, and inguinal lymphadenopathy from pelvic or lower-limb infections or malignancies. An enlarged or inflamed lymph node in the groin can mimic a hernia or soft-tissue injury. These causes are less common than musculoskeletal ones, but they carry serious implications and are worth considering when the standard workup turns up nothing.
Why Elderly Groin Pain Is So Often Misdiagnosed
Several features of aging conspire to make groin pain harder to diagnose in older adults than in younger ones. First, pain perception changes with age. Older people often describe pain less precisely, and conditions that would cause sharp, localizable pain in a younger person may present as a vague, dull ache in someone over 75. Second, multiple overlapping conditions are the norm rather than the exception. An 80-year-old with moderate hip arthritis, a small inguinal hernia, and lumbar stenosis may develop a new iliopsoas hematoma from anticoagulation, and the new pain gets attributed to one of the preexisting conditions rather than investigated independently.
Third, clinicians sometimes anchor on the most obvious abnormality on an X-ray. Hip arthritis visible on a plain film is extremely common in older adults and may be asymptomatic; treating the arthritis on the X-ray rather than the actual source of the person’s pain is a well-recognized diagnostic pitfall. And fourth, some of the most dangerous causes of elderly groin pain, including atypical femoral fractures, iliopsoas hematomas, and deep infections, do not appear on plain X-rays at all and require CT or MRI for detection. A normal X-ray in an older person with persistent groin pain should prompt further investigation, not reassurance.
Practical Steps for Older Adults With Groin Pain
Not every episode of groin pain requires emergency evaluation, but certain patterns should prompt urgent assessment:
- Sudden severe pain with a groin lump: suggests an incarcerated hernia, particularly with nausea or vomiting.
- Groin pain with fever: raises concern for infection in or around the hip joint.
- New groin pain on anticoagulants: may indicate internal bleeding into the iliopsoas muscle, especially if accompanied by leg weakness or falling hemoglobin.
- Prodromal thigh or groin ache on bisphosphonates: needs imaging to rule out an impending atypical femoral fracture.
- Bilateral hip and shoulder stiffness: in someone over 50 with elevated inflammatory markers, consider polymyalgia rheumatica.
For groin pain that comes on gradually, worsens with activity, and has no red-flag features, a visit to a primary care provider is a reasonable starting point. The clinical examination, including hip range of motion, hernia checks, spinal assessment, and neurological testing of the lower limb, often narrows the possibilities substantially before any imaging is ordered. When imaging is needed, the choice between X-ray, ultrasound, CT, and MRI depends on which diagnoses are most suspected, and a normal X-ray in a person with ongoing symptoms is a reason to keep investigating, not to stop.