Why Does My Knee Click, Crack, or Pop? Should I Be Worried?

 

Hearing Your Knee Make Noise?

Many people notice clicking, cracking, or popping sounds coming from their knees during everyday activities such as climbing stairs, standing up, or exercising.

In most cases, these sounds are completely normal. However, if they’re accompanied by pain, swelling, or instability, they may indicate an underlying knee condition that deserves medical attention.

Understanding what’s causing the noise can help you decide whether it’s time to seek professional advice.

 

Common Causes of Knee Clicking

1. Ligaments and Tendons Moving

As you bend and straighten your knee, tendons and ligaments can briefly move over small bony structures before snapping back into place.

This is particularly common after prolonged sitting.

2. Cartilage Wear

As cartilage becomes thinner with age or arthritis, the joint surfaces become rougher.

This may produce:

  • Grinding
  • Crunching
  • Crackling sensations
  • especially when walking or climbing stairs.

3. Meniscus Injuries

The meniscus acts as the knee’s shock absorber.

A tear may cause:

  • Pain
  • Clicking
  • Locking
  • Difficulty fully straightening the knee
  • These symptoms often worsen during twisting movements.

4. Patellofemoral Pain Syndrome

Sometimes the kneecap doesn’t glide smoothly within its groove.

This can lead to:

  • Clicking
  • Front knee pain
  • Pain when climbing stairs
  • Pain after sitting for long periods

 

When Should You See an Orthopaedic Surgeon?

You should arrange an assessment if knee clicking is associated with:

  • Persistent pain
  • Swelling
  • Locking
  • Giving way
  • Reduced movement
  • Difficulty walking
  • Previous injury

Early diagnosis can prevent further joint damage.

How Is It Diagnosed?

Your orthopaedic surgeon may recommend:

  • Clinical examination
  • X-rays
  • MRI scans (if soft tissue injury is suspected)
  • Assessment of walking and knee alignment

Treatment Options

Treatment depends on the cause and may include:

Conservative Care

  • Physiotherapy
  • Activity modification
  • Anti-inflammatory medication
  • Weight management
  • Strengthening exercises

Surgical Treatment

If conservative management doesn’t help, surgery may be recommended for conditions such as:

  • Meniscus tears
  • Advanced arthritis
  • Cartilage damage

Don’t Ignore Painful Knee Noises

A painless click is usually nothing to worry about.

However, persistent pain, swelling, or instability should never be ignored. Early treatment often leads to better outcomes and may help avoid more invasive procedures later.

Call to Action

If your knee is clicking and causing discomfort, the team at PJS Orthopaedics can provide a comprehensive assessment and personalised treatment plan to help keep you moving comfortably.