If you're someone who frequently cracks your knuckles, you've likely heard the warning: "Stop that—it'll give you arthritis." But is there truth to this common myth? As experts in joint health, we've reviewed the research to explain the real effects.
Studies show that 25 to 45% of people crack their knuckles regularly. Many do it to relieve tension in their fingers and hands, enjoy the satisfying sound, or use it as a stress-reliever. But what's actually happening inside the joint?
Read also: '8 tips to keep your hands soft in the colder months'
Knuckles are surrounded by a synovial capsule filled with lubricating synovial fluid that nourishes the joint. When you pull or bend your fingers, it creates negative pressure inside, causing dissolved gases like nitrogen and carbon dioxide to form bubbles. These bubbles collapse with a pop. You might also hear snapping from tendons and ligaments shifting over the joint.
Research debunks this long-held belief—no link exists between habitual knuckle-cracking and arthritis. While excessive force might lead to other issues, mild cracking is harmless unless it causes symptoms like swelling, pain, or reduced mobility. Studies have dismissed claims of hand weakness from cracking; in fact, it may even improve joint mobility in some cases. Monitor for discomfort, swelling, or functional changes, and consult a doctor if they arise. Note: knuckle-cracking can be oddly addictive!
Source: Livestrong.com
