Hip and groin pain shares a common nerve supply, which is why the two areas so often hurt together. The cause depends heavily on your age and activity level: in younger, active adults, the most likely culprits are labral tears and femoroacetabular impingement, while in older adults, osteoarthritis dominates. But the list doesn’t end there. Problems in the spine, lower abdomen, and pelvic floor can all send pain into the groin, making this one of the trickier symptoms to pin down.
Osteoarthritis: The Most Common Cause in Older Adults
Osteoarthritis of the hip is the single most common reason for anterior hip and groin pain in people over 50. The cartilage lining the ball-and-socket joint gradually wears down, causing stiffness, aching, and reduced range of motion. The pain typically comes on gradually and worsens after sitting for long stretches or walking for extended periods. You might notice that getting out of a car or rising from a chair becomes increasingly uncomfortable.
Globally, the burden of hip osteoarthritis has nearly tripled over the past three decades. Women carry a slightly higher overall rate than men, though men with elevated body weight face a disproportionately rising risk. The sharpest increases in disease burden appear in men between ages 60 and 69 and again after 85. Excess weight accelerates cartilage breakdown because every extra pound multiplies the force passing through the hip joint during walking.
Femoroacetabular Impingement
Femoroacetabular impingement, commonly called FAI, is one of the most frequent causes of hip and groin pain in young adults. It happens when extra bone grows along the edges of the hip joint, preventing the ball and socket from gliding smoothly. There are two patterns. In a cam deformity, the ball (femoral head) isn’t perfectly round, so a bony bump grinds against the cartilage lining the socket during movement. In a pincer deformity, the rim of the socket extends too far over the ball, crushing the soft tissue ring (labrum) that cushions the joint. Many people have both.
The hallmark sensation is a sharp, stabbing pain with turning, twisting, or squatting. It tends to build gradually rather than strike after a single event. Some people first notice it during sports, then progressively during everyday movements like getting in and out of a car. Left untreated, the abnormal contact can damage cartilage and eventually lead to early osteoarthritis.
Labral Tears
The labrum is a ring of tough cartilage that lines the rim of your hip socket, acting like a gasket to keep the ball of the femur seated and stable. When it tears, the most common symptoms are a deep ache in the hip or groin, clicking or catching sensations during movement, and a feeling of instability when standing or walking. The pain often worsens with bending, exercise, or lying on the affected side, and it feels like it originates deep inside the body rather than near the surface.
Labral tears can result from a single acute injury, like a fall or a sudden pivot during sports, or from the repetitive grinding caused by FAI over time. Some people have small tears that cause no symptoms at all and are only discovered incidentally on imaging. When a tear does need to be confirmed, a specialized MRI with dye injected into the joint (MR arthrography) detects about 92% of tears. A standard MRI without dye catches as few as 8 to 25%, so if your initial scan looks normal but symptoms persist, the contrast-enhanced version is far more reliable.
Hip Flexor Strains and Tendon Problems
The muscles that lift your thigh toward your chest, particularly the iliopsoas, run directly through the front of the hip. Overuse, sudden acceleration, or repetitive kicking and sprinting can strain these muscles or inflame their tendons where they attach near the groin. The pain is usually felt over a bony prominence at the front of the pelvis and gets worse when you try to flex your hip against resistance, like climbing stairs or performing a sit-up.
A related condition, sometimes called snapping hip syndrome, produces an audible pop or snap at the front of the hip during certain movements. In most cases, the snap happens when the iliopsoas tendon suddenly flips over the underlying muscle and strikes the pubic bone instead of gliding smoothly back into place. This is most noticeable when bringing the leg from a bent, rotated position back to neutral. The snapping itself isn’t always painful, but when the tendon becomes irritated from repeated snapping, it can produce persistent groin soreness.
Sports Hernias and Inguinal Hernias
A sports hernia (athletic pubalgia) is not a true hernia. It’s a tear or stretch of the soft tissues where the lower abdominal muscles and inner thigh muscles attach to the pubic bone. It causes severe groin pain at the time of injury, typically during a twisting or cutting movement. The pain eases with rest but returns immediately when you go back to the activity. A telltale sign is pain during a resisted sit-up. Unlike a standard hernia, a sports hernia does not produce a visible bulge, and a physical exam often reveals no hernia at all.
A traditional inguinal hernia, by contrast, occurs when abdominal tissue pushes through a weak spot in the lower abdominal wall. It usually creates a noticeable bulge in the groin that may worsen with coughing or straining. Over time, an untreated sports hernia can weaken the area enough that it progresses into a true inguinal hernia with a palpable bulge.
Referred Pain From the Lower Back
Not all groin pain starts in the groin. Pinched or irritated nerve roots in the lower lumbar spine can send pain directly into the hip and groin area, even when the hip joint itself is perfectly healthy. The groin corresponds to the nerve pathways from the L1 and L2 vertebral levels, but research shows that compression at L3 and L4 can also produce groin pain because these nerves connect to L2 through a shared pathway (the obturator nerve).
This type of referred pain is easy to miss. If your groin hurts but hip imaging looks normal, a closer look at the spinal canal and the openings where nerves exit the spine from L1 through L4 may reveal the real source. Clues that the pain is spinal in origin include accompanying numbness or tingling in the thigh, pain that changes with back position, or a history of disc problems.
Stress Fractures and Avascular Necrosis
A stress fracture of the femoral neck is a small crack in the bone just below the ball of the hip, caused by repetitive loading without adequate recovery. It’s most common in runners and military recruits, especially those who ramp up training too quickly or have an energy imbalance from insufficient calorie intake. The pain worsens with weight-bearing activity and may cause a noticeable limp.
Avascular necrosis is a different process: the blood supply to the femoral head is disrupted, causing bone tissue to die and eventually collapse. Risk factors include long-term corticosteroid use, heavy alcohol use, smoking, obesity, and certain blood disorders. It tends to affect middle-aged and older adults. Early symptoms resemble a vague groin ache, but as the condition progresses, range of motion becomes increasingly limited and walking becomes painful. Early detection matters because treatment options are more effective before the bone collapses.
Pelvic and Abdominal Sources
Pain that seems to come from the hip or groin can sometimes originate in the abdomen or pelvis. Conditions involving the urinary tract, bowel, or reproductive organs can refer pain to the groin. In women, cyclic groin pain that worsens around menstruation may point to endometriosis or ovarian pathology. Urinary symptoms alongside groin pain could indicate kidney stones or a urinary tract issue. These sources are worth considering when hip-focused evaluation doesn’t explain the symptoms.
How Doctors Sort It Out
Because so many structures can produce hip and groin pain, diagnosis usually starts with a careful history: your age, how the pain started, what makes it worse, and whether you have any clicking, catching, or instability. A physical exam includes specific provocative tests. One common maneuver involves flexing the hip, pulling it inward, and rotating it. This test is highly sensitive for picking up joint problems, meaning a negative result makes conditions like FAI or a labral tear much less likely. The tradeoff is that a positive result isn’t very specific, so it flags a problem without pinpointing exactly which one.
X-rays are typically the first imaging step to check bone shape, joint spacing, and signs of arthritis or fracture. If a labral tear or soft tissue injury is suspected, MR arthrography provides much higher accuracy than a standard MRI. Your doctor may also image the lumbar spine if referred pain is a possibility. The combination of your symptom pattern, exam findings, and targeted imaging usually narrows the cause down enough to guide treatment.