Knee Cracking and Clicking Sounds: Normal Crepitus or a Problem? (Video)

2:21 min

Read the full written guide: Knee Cracking and Clicking Sounds: Normal Crepitus or a Problem? →

Knee clicks are often just harmless noises from gas bubbles, tendons, or rough joint surfaces. This video explains what’s really happening and why the sound alone doesn’t mean arthritis.

We also walk you through a quick two-minute home test and a simple nightly habit to spot any concerning pain or locking. For full details, read the post at thecareonline.com.

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Transcript

20 minutes between knee pops, what does it mean?

20 minutes between knee pops, what does it mean?

Knee Clicks Explained

We’ll show you why most knee clicks are harmless, what actually creates the sound, and a quick test you can do at home to spot any problem.

What makes the sound?

The pop you hear usually comes from three sources: tiny gas bubbles bursting in the joint fluid, tendons snapping over bony bumps as you move, and a faint grind when rough surfaces slide together.

Bubble reset time

A bubble collapse creates the pop, and it takes about twenty minutes before the same spot can pop again, which is why you can’t crack the same knee twice in a row.

Why cracks get louder

As we age, cartilage gets a bit rougher and the surrounding tissues lose some spring, so the knee creaks louder, just like an old door, but the noise alone doesn’t mean damage.

Quick home check

Spend just two minutes doing a few simple movements, straightening, bending, and half-squats, to see if the clicks are painless, which usually means they’re normal.

Simple home test

Try this at home: sit on a chair and slowly straighten then bend your knee ten times, note any click and pain; place your palm over the kneecap and repeat five times, and do three half-squats while holding a table, watching for pain behind the kneecap.

Count stair clicks

Tonight, count how many clicks you hear going up the stairs and how many coming down. Most people hear more, louder clicks on the way down because the kneecap is pressed harder into its groove. If those clicks hurt, start doing sit-to-stands daily.

Quick fact

The pop is simply a gas bubble collapsing in the joint fluid; it can’t happen again for about twenty minutes, which explains why you can’t crack the same knee twice in a row.

The one thing to do

If any click comes with pain, swelling, catching, or a feeling that the knee gives way, the key move is to strengthen the thigh muscles so the kneecap tracks smoothly, no scan needed before seeing a doctor.

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Read the full guide

Read the complete guide on thecareonline.com. This is general information, not medical advice.

Nothing on The Care Online is medical advice. Traditional practices are described as tradition, not as fact. Take a persistent or serious concern to a qualified professional. See how videos and posts are made on our methodology page.