Why do our joints crack, creak, and make noise?
Joint noises are usually harmless, but they should be evaluated if accompanied by pain, swelling, or other functional limitations.
Many people experience noisy joints such as cracking knees on stairs, creaking necks when stretching, or popping fingers, which can be alarming and are often attributed to aging, injuries, or the potential onset of arthritis. As a physical therapist and researcher in chronic joint pain, I frequently receive questions regarding whether these joint sounds are a cause for concern, and reassuringly, in most cases, they are not.
The anxiety surrounding joint noises stems from our tendency to view them as isolated phenomena, whereas clinically they are not. These sounds often result from a process known as cavitation, which is when gas bubbles burst in the joint fluid and create a popping noise. However, understanding the nature of these sounds is essential, particularly if they are accompanied by symptoms such as pain, swelling, locking, or reduced functionality, as these may indicate underlying issues that need further evaluation.
Overall, noisy joints are generally harmless but can influence one's confidence in movement. If joint noises are associated with discomfort or functional limitations, itβs advisable to seek medical advice to rule out any serious conditions and ensure proper joint health management.