Pain Below Kneecap: Common Causes and What Helps

Pain below kneecap is one of the most common knee complaints, and it usually has a short list of causes. Many of them come from the same place: the front of the knee has been asked to do a lot of work, for a long time. Knowing which one fits you helps you choose what to try.

The NHS says knee pain can often be treated at home, and that you should start to feel better in a few days. It also advises seeing a GP if the pain does not improve within a few weeks (NHS, 2023). That is a useful guide for most of the causes below.

The usual causes of pain below the kneecap

Patellar tendon irritation. The patellar tendon is the strong cord that joins your kneecap to your shin. When it is asked to do too much, it gets sore, often just below the kneecap. People call this jumper's knee. It follows jumping, running, stairs and squats. Our guide to jumper's knee goes deeper on this one.

Fat pad irritation. Under the tendon sits a soft pad of tissue. It can get pinched or inflamed. The pain is often under and on both sides of the tendon. It tends to feel worse when the knee is held straight or pushed back.

Bursitis below the kneecap. A bursa is a small sac of fluid that cushions the knee. After a lot of kneeling, one can swell and feel tender or puffy at the front. Short breaks from kneeling often matter here.

Osgood Schlatter. In active teenagers, a tender bump below the knee can come from this common growing phase condition. It is worth mentioning to a doctor if it fits.

Pain from the front of the knee. Sometimes the pain is felt below the kneecap but comes from the joint behind it. Our page on patellofemoral pain exercises covers that area.

Why the whole leg matters

When the front of the knee is sore, it helps to ask what the rest of the leg is doing. A hip that moves a little less, an ankle that gives little on a step, or a foot that stays stiff can all send more work to the same small spot. The knee may then end up doing more than its share.

The Feldenkrais Method® invites you to notice this through slow, small, varied movements. You can see how the hip, ankle and foot join in when you go down a stair or sit into a chair. Our Feldypedia entry on knee stiffness after 60 shows how these habits build up. A good next step is our knee proprioception exercises, which are gentle and easy to try.

What helps with pain below the kneecap

You may find these useful this week:

• Ease off the trigger for a while. That might be jumping, long runs, or deep squats. You do not have to stop moving.
• Take short breaks from kneeling. A cushion or a pause every few minutes can help.
• Notice how you go down stairs and into a squat. Do you rush? Does one knee lead? Try slowing down and let the hip and ankle bend a little more.
• Move the whole leg gently, a few minutes at a time.
• Comfort measures. The NHS suggests an ice pack wrapped in a tea towel for up to 20 minutes every 2 to 3 hours, and simple painkillers if you need them.

Feldy's 7 day free trial is one way to practise the leg movements while the sore spot settles.

When to see a professional

Get the knee looked at if you notice swelling, a knee that gives way or locks, pain after a fall or a pop, or pain that lasts several weeks. Seek help the same day if the knee is very painful, badly swollen or has changed shape, if you cannot put weight on the leg, or if it is hot and red and you have a fever or feel shivery. These are medical questions first. Movement sits alongside care, and it does not replace it.

Find where to start

Different people enjoy different kinds of movement, and a sore knee may suit one more than another. This short quiz can point you toward a place to begin.

Not sure which movement method fits you? Take the 60-second Movement Match quiz and find out which method suits knees that complain on stairs.

Common Questions about pain below kneecap (FAQ)

What causes pain below the kneecap?

The usual causes are an irritated patellar tendon (often called jumper's knee), an irritated fat pad under the tendon, and a swollen bursa, which is a small fluid cushion, after a lot of kneeling. In active teenagers, a bump below the knee can be Osgood Schlatter, a common growing phase condition. Sometimes the pain is felt here but comes from the joint behind the kneecap.

Is it safe to keep walking with pain below the kneecap?

For ordinary irritation, easy walking on flat ground is usually fine for many people, and complete rest can leave the knee stiffer. Choose shorter walks and watch how the knee feels the next morning. Stop and get advice if the knee swells, locks, gives way, or the pain sharpens.

How often should I move a sore knee?

Several short spells usually suit a sore knee better than one long session. A few minutes of gentle leg movement, three or four times a day, gives the knee many chances to feel easy. Let comfort set the dose, and leave out anything that makes the spot below the kneecap louder.

How long does pain below the kneecap last?

It depends on the cause. The NHS says knee pain often starts to improve within a few days with self care. A tendon that has been loaded too much often needs a few weeks of easier activity. If it has not improved after a few weeks, it is worth having it looked at.

Who should look at pain below the kneecap, and when?

Book a visit if the knee is swollen, locks or gives way, if the pain began after a fall or a pop, or if it has lasted several weeks. Get help the same day if the knee is very painful, badly swollen or changed in shape, if you cannot put weight on it, or if it is hot and red and you have a fever.

What should I avoid with pain below the kneecap?

For now, you may want to avoid deep squats, long spells of kneeling, repeated jumping and fast stairs, since these load the sore spot again and again. Nothing is banned for good. Many people come back to these once the area calms and the rest of the leg shares the work better.

How is gentle movement different from strengthening the knee?

Strengthening aims to make one muscle group do more. Slow, gentle movement lessons ask how the hip, knee, ankle and foot share a movement, so the front of the knee may do less of the work. Both have a place, and gentle movement sits alongside any plan from your physiotherapist. When the area is irritable, spreading the work around often feels kinder.