What Causes Hip Bursitis?

Hip bursitis happens when one of the small fluid-filled sacs that cushion the hip joint becomes irritated and inflamed. These sacs, called bursae, sit between bones, muscles, and tendons to reduce friction during movement. When a bursa swells, every step can feel sharp or achy, and the pain often shows up on the outer side of the hip.

The most common cause is repeated pressure or friction on the greater trochanter, the bony point on the outside of the hip. That is why the condition is often called greater trochanteric bursitis. Injury, prolonged sitting, and certain structural differences in the hip can also set it off.

What Causes Hip Bursitis?

Hip bursitis is caused by irritation and inflammation of a bursa, usually from repeated friction, direct pressure, or a sudden injury to the hip area. The trochanteric bursa, located on the outer hip, is the one most often affected.

Several factors can trigger that irritation:

• Repetitive motion. Activities that involve repeated hip movement, like running, cycling, or climbing stairs, can wear on the bursa over time.
• Direct pressure. Sitting on hard surfaces for long periods, or lying on one side of the body, puts steady pressure on the outer hip.
• Injury. A fall onto the hip or a hard blow to the area can inflame the bursa suddenly.
• Structural issues. Differences in leg length, hip alignment, or the shape of the hip joint can change how weight is distributed and increase friction.
• Muscle weakness or tightness. Weak hip muscles, especially the gluteals, may allow the joint to move in ways that irritate the bursa.

It is worth understanding that the bursa itself is not the root problem in most cases. It is reacting to something else — often a tendon, a muscle, or the way the hip moves. That distinction matters because treating only the inflammation without addressing the underlying mechanics often leads to the problem coming back.

What Does Hip Bursitis Pain Feel Like?

The hallmark symptom is pain on the outside of the hip, often described as sharp, burning, or aching. It tends to get worse with activity and better with rest, at least at first.

Common patterns include:

• Pain when lying on the affected side
• Discomfort when getting up from a chair or out of a car
• Pain that spreads down the outer thigh
• Tenderness when pressing on the outer hip
• Aching that worsens after prolonged sitting or standing

The pain rarely travels below the knee. When it does, or when there is numbness, tingling, or weakness in the leg, that points toward a different problem — often a nerve issue in the lower back rather than the bursa itself.

One detail that trips people up: hip bursitis pain is often felt on the outside of the hip, but true hip joint problems like arthritis are usually felt in the groin. Where the pain sits gives clinicians a useful clue about what is actually inflamed.

Who Is More Likely to Get Hip Bursitis?

Hip bursitis is more common in women than men, and it becomes more frequent with age. It also shows up more often in people who run, cycle, or do a lot of stair climbing.

Other factors that raise the odds include:

• Being middle-aged or older
• Having a prior hip injury or surgery
• Having rheumatoid arthritis or another inflammatory condition
• Carrying extra body weight, which adds load to the hip
• Having diabetes or a prior infection in the area
• Having one leg longer than the other, or a previous hip replacement

Some of these factors are things you can change, and some are not. Age and sex are not modifiable. Activity level, body weight, and muscle strength are areas where change is possible, though the evidence that modifying them prevents bursitis is not strong. What the research does support is that these factors are associated with the condition, not that changing any single one guarantees prevention.

Is Hip Bursitis the Same as Hip Tendonitis?

No, but they often occur together and can be hard to tell apart. Hip bursitis is inflammation of the bursa. Hip tendonitis is inflammation of a tendon, the tissue that connects muscle to bone.

In the outer hip, the gluteal tendons and the trochanteric bursa sit close together. When one becomes irritated, the other often follows. Many clinicians now use the term “greater trochanteric pain syndrome” to describe this whole cluster of problems, because separating them precisely is difficult and often not necessary for treatment.

This overlap matters because treatment that helps one usually helps the other. It also means that imaging findings do not always match symptoms. A scan might show a swollen bursa in someone with no pain, or show a normal bursa in someone with significant pain.

How Is Hip Bursitis Diagnosed?

Diagnosis usually starts with a physical exam and a description of your symptoms. There is no single blood test or scan that confirms hip bursitis on its own.

A clinician will typically press on the outer hip to check for tenderness, ask you to move your leg in certain directions, and test muscle strength. Pain with resisted abduction — pushing your leg outward against resistance — is a common finding.

Imaging may be used to rule out other causes. X-rays can show arthritis or bone problems. An MRI or ultrasound can show bursa swelling and tendon changes, but these findings are not always decisive. As noted, imaging results do not always line up with symptoms.

Because several conditions can cause outer hip pain, including tendon problems, nerve irritation, and referred pain from the lower back, a careful exam is more useful than jumping straight to a scan.

What Makes Hip Bursitis Worse?

Certain habits and positions reliably aggravate the condition. Recognizing them can help you avoid flare-ups, though avoiding them entirely is not always realistic.

• Sitting with legs crossed for long periods
• Standing with weight shifted onto one hip
• Lying on the sore side at night
• Running on uneven surfaces or downhill
• Wearing worn-out shoes that change your gait
• Sudden increases in activity after a period of rest

Sleep is a common struggle. Many people with hip bursitis wake up when they roll onto the affected side. Placing a pillow between the knees can reduce the angle of the hip and lessen pressure on the bursa, though this is a comfort measure rather than a proven treatment.

When Should You See a Doctor?

See a doctor if hip pain lasts more than a few weeks, limits your daily activities, or comes with fever, redness, or swelling that feels hot to the touch. Those last signs could point to infection, which is rare but serious and needs urgent care.

Also seek care if you notice:

• Pain that does not improve with rest
• Sudden severe pain after a fall or injury
• Numbness, tingling, or weakness in the leg
• Pain that travels below the knee
• Inability to bear weight on the leg

These signs can indicate something other than bursitis, such as a fracture, nerve problem, or joint infection. Getting an accurate diagnosis matters because the treatment for each is different.

What Helps Hip Bursitis?

Most cases improve with conservative care. Rest, activity modification, and physical therapy are common first steps. Physical therapy typically focuses on strengthening the hip abductor muscles and stretching tight structures around the hip.

Some clinicians recommend ice or heat for comfort, though evidence for either is limited. Over-the-counter anti-inflammatory medications are often used, but they treat symptoms rather than the underlying cause. For persistent cases, a doctor may suggest a corticosteroid injection into the bursa. These injections can reduce pain in the short term, but the evidence on long-term benefit is mixed, and repeated injections carry some risk to nearby tendons.

Surgery is rarely needed. It is generally reserved for cases that do not improve after months of other treatment, and even then, outcomes vary.

What the evidence does not support is any single fix that works for everyone. Recovery timelines differ widely, and some people continue to have symptoms on and off for months. Being patient with the process is realistic; expecting a quick cure is not.