Olecranon Bursitis: The Swollen Elbow, in Plain Language

Olecranon bursitis is swelling of a small cushion of fluid that sits directly over the bony point at the back of your elbow. It is one of the most visible complaints in the body: a soft, squashy lump appears, often almost overnight, and it looks considerably more dramatic than it feels. Many people arrive at the doctor expecting bad news and leave with an elbow pad. The one genuinely important question is whether it is infected, because that single fork in the road changes everything about what happens next.

Why the point of the elbow swells

The olecranon bursa lies between the skin and the tip of the elbow bone, and its job is to let the skin glide over the bone as you bend and straighten. It has almost no padding above it, which makes it exposed. Lean on your elbows at a desk for years, kneel on them to work under a sink, or fall onto one on a hard floor, and the cushion responds by filling with fluid.

It is not rare, though it is not everyday either. The annual incidence is estimated at 10 to 29 per 100,000 people, and it turns up most often in men between 30 and 60, especially in work or sport with repeated elbow knocks (StatPearls, 2025). Gout and rheumatoid arthritis are the other regular causes.

The part that matters: infected or not

Roughly two thirds of olecranon bursitis cases are not infected. That leaves a meaningful third that are, most often after a break in the skin lets bacteria in. This is why the swelling deserves a look rather than a shrug.

The signs of infection are the ones you would expect: spreading redness, heat, pain that keeps getting worse rather than better, a fever, or feeling unwell in yourself. A scab or cut over the lump raises the odds. If any of those apply, see a doctor promptly. Infected bursitis is treated with antibiotics and sometimes drainage, and it is not something to wait out at home. Our Feldypedia entry on bursitis explains what these cushions are and why they become irritated across the body.

What settles a simple olecranon bursitis

Once infection has been ruled out, the treatment is unglamorous and effective. Stop leaning on it. That is genuinely most of the work, and it is the step people skip. An elbow pad or a soft sleeve helps if your job or hobby puts the elbow on hard surfaces. Ice and a few days of taking it easy cover the rest.

Time then does the slow part. The swelling usually eases over several weeks, and a small soft bump can remain for months afterwards without meaning anything is wrong. That leftover lump is thickened tissue, not ongoing inflammation.

Moving the arm while it calms down

The quiet risk with any sore elbow is that you stop using the whole arm. You hold it close, you stop reaching overhead, and within a fortnight the shoulder and the neck have joined in. Stiffness earned that way often outlasts the original problem.

Gentle movement is the antidote, as long as nothing is being pressed. The Feldenkrais Method® works exactly here: slow, small movements done with attention rather than effort, so the nervous system can let go of the extra bracing an injured area collects. Feldy makes those into short audio lessons you follow at home, and you can try the program free for 7 days.

When the swelling has quieted and you want the arm working easily again, our lessons on gentle elbow movement for pain and tennis elbow are sensible next steps. Keep everything small, keep the elbow off hard surfaces, and let comfort set the limit.

Common Questions about olecranon bursitis (FAQ)

What does olecranon bursitis look like?

A soft, squashy swelling right on the bony point at the back of the elbow, often described as a golf ball under the skin. It can appear over a day or two or build slowly. Many people notice the shape before they notice any pain, because the simple, non infected kind is frequently painless.

How do I know if my elbow bursitis is infected?

Infection usually brings redness spreading over the skin, warmth, tenderness that keeps increasing, and sometimes a fever or feeling generally unwell. A cut, graze, or scab over the swelling raises the risk. If any of that fits, see a doctor promptly, because infected bursitis is treated quite differently.

What causes olecranon bursitis?

Pressure and knocks, most often. Long hours leaning on a desk or a car door, kneeling work that rests on the elbows, a fall onto the elbow, or repeated small trauma. It also occurs with gout and rheumatoid arthritis, and sometimes with no clear trigger at all.

Does olecranon bursitis need to be drained?

Usually not. Simple, non infected cases are managed with pressure relief, an elbow pad, and time. Doctors may draw fluid off to test it when infection is suspected, since that changes the treatment. Draining a clean bursa often just refills, so most clinicians avoid it unless there is a reason.

How long does olecranon bursitis take to go away?

The swelling commonly takes several weeks to settle, and a small soft lump can linger for months after the discomfort has gone. That lingering bump is usually thickened tissue rather than active inflammation. Removing the pressure that caused it is what makes the difference.

Can I still move my elbow with bursitis?

Yes, gently, as long as infection has been ruled out. Keeping easy, comfortable motion through the elbow, shoulder, and wrist helps you avoid the stiffness that comes from holding an arm still for weeks. Avoid leaning on the point of the elbow, and stop anything that sharpens the pain.