Can cracking your knuckles damage your joints? Orthopaedic surgeon explains the popping sound and shares when to worry

Occasional knuckle cracking is generally harmless and not linked to joint damage according to studies.

The popping sound is caused by gas bubbles forming and collapsing in synovial fluid surrounding the joint.

Forceful or frequent cracking may cause temporary discomfort, swelling, reduced grip strength, or ligament injury.

Warning signs that require medical attention include pain, swelling, or reduced range of motion during cracking.

Dr Amite Pankaj Aggarwal, orthopaedic surgeon at Fortis Hospital, Shalimar Bagh, provided the explanation.