Why Do Joints Crack? Crepitus Explained
Around 70% of people are worried by the sound of their joints cracking and assume it is the start of wear and tear. Dr. Amr Elyamany explains what is really happening.
What is that sound?
It is called crepitus. Synovial joints contain a fluid with dissolved gases such as nitrogen and oxygen. When the joint moves, these gases can produce a pop, or gather in a small cavity and burst. This is very normal.
What does the research say?
Most recent studies suggest that this phenomenon is usually linked to gas in the joint, not to wear of the cartilage.
When should you worry?
- The cracking comes with pain
- The joint is swollen
- There was a previous injury to that joint
Key takeaway: As long as the cracking is not accompanied by pain, do not worry; if it is, see a doctor.
When to see a doctor
- Cracking together with pain, swelling or locking
- A joint that clicks after an injury
- A joint that feels unstable
Need advice about your own case? Book a consultation with Dr. Amr Elyamany in Dubai.
This article is for general education and does not replace an in-person medical examination. If you have symptoms, please consult a qualified doctor.