The Science Behind Cracking Knuckles: Why That Satisfying Pop Sound Happens Explained
Have you ever cracked your knuckles and wondered why they make that popping sound The answer lies in the synovial fluid in your joints Joints are the points where two bones meet and move and they re surrounded by a capsule filled with synovial fluid This fluid provides lubrication and nutrients to the joint and it also contains gases such as oxygen nitrogen and carbon dioxide When you crack your knuckles you re essentially pulling apart the bones in your fingers which creates negative pressure in the joint This negative pressure causes the gases in the synovial fluid to form bubbles which then collapse producing the popping sound While cracking your knuckles may feel satisfying some people worry that it could lead to arthritis or other joint problems However according to a study published in the Journal of the American Board of Family Medicine there s no evidence that cracking
