Why Does My Knee Click — And Should I Be Worried?
If your knee clicks when you squat, climb stairs, or get up from sitting, you’re definitely not alone.
A clicking or popping sound in the knee is incredibly common — and in most cases, it’s nothing to worry about.
But sometimes, it can be your body’s way of telling you that something needs a little attention.
Let’s explore what’s really going on when your knee clicks, and how exercise can help keep it healthy.
3 Common Reasons Why the Knee Clicks
1. Gas bubbles in the joint
Your knee joint is surrounded by synovial fluid, a smooth lubricant that allows your bones to glide without friction.
This fluid contains gases like oxygen, carbon dioxide, and nitrogen.
When you bend or straighten your knee, pressure inside the joint changes — forming and collapsing tiny gas bubbles.
That popping or clicking sound you hear? It’s simply those bubbles releasing — and it’s completely harmless.
2. Soft tissue snapping
Your knee has several tendons and ligaments that move around bony structures as you flex and extend your leg.
If one of these tissues — like the iliotibial (IT) band, quadriceps tendon, or hamstring tendon — slides or “snaps” over a bone, you may hear or feel a click.
This can happen more often if:
- There’s tightness in surrounding muscles,
- The kneecap (patella) isn’t tracking perfectly, or
- You’re doing repetitive movements like squats or running.
Usually, this is painless, but if it continues, it can cause irritation or inflammation around the joint.
3. Cartilage wear and tear
If your knee clicks are accompanied by grinding or stiffness, the cause might be cartilage changes within the joint.
Over time, cartilage — the smooth, protective layer on the ends of bones — can wear down, creating rough surfaces that make noise during movement.
This can happen with osteoarthritis, previous injuries, or long-term overuse.
Here’s how it helps:
- Improves patellar tracking:
Strengthening the quadriceps, glutes, and hip stabilizers helps guide the patella (kneecap) smoothly in its groove, reducing catching or clicking sensations. - Increases joint lubrication:
Gentle, regular movement boosts the flow of synovial fluid, nourishing cartilage and helping the joint move more freely. - Balances muscle tension:
Stretching tight muscles (like the quads, hamstrings, and IT band) and strengthening weaker ones creates balance around the knee — reducing strain and uneven pulling on the patella.
When to Seek Professional Advice
If your knee clicking is pain-free, it’s usually normal.
However, you should book an assessment if you experience:
- Pain during or after movement,
- Swelling or stiffness,
- Locking, catching, or the knee giving way.
These can indicate an underlying issue, such as cartilage wear, a meniscus tear, or patellofemoral tracking problem, which should be properly evaluated.
For the Full Program:
Available now in our premium membership portal — My Next Move.
🎯 For only R250/month, you get:
- This knee program + new programs every month
- 1x online consult to guide your journey (15-20 minutes)
- Access to our symptom tracker and referral support
- Slow Movement programs
