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Is it good to crack knuckles?

Published in Joint Health 2 mins read

No, knuckle cracking is not inherently good or bad for you, based on the available information.

Understanding Knuckle Cracking

Knuckle cracking, that familiar popping sound, often raises concerns. Many people worry that it leads to arthritis or other joint problems. However, according to research, this might not be the case. Here's a breakdown:

What Happens When You Crack a Knuckle?

The popping sound you hear is not your bones grinding together. Instead:

  • It's believed to be caused by the formation and rapid collapse of gas bubbles in the synovial fluid that lubricates your joints.
  • This process is called "cavitation," where pressure changes in the joint fluid create these gas bubbles.

Does Knuckle Cracking Cause Harm?

  • According to Dr. Klapper, knuckle cracking does no harm to your fingers, neck, ankles, or other joints that pop and crack throughout the day. This holds true for both normal day-to-day motions and compulsive habits.
  • Therefore, cracking your knuckles, or similar joints, is not linked to joint damage such as arthritis.

Common Concerns and Myths

Here are some myths about knuckle cracking debunked:

  • Myth: Knuckle cracking leads to arthritis.
    • Fact: There is no scientific evidence to support this claim. Dr. Klapper states that knuckle cracking causes no harm.
  • Myth: Cracking your knuckles makes your hands bigger or deformed.
    • Fact: Knuckle cracking is not known to cause any changes in bone or joint structure that might alter appearance.

Other Joints and Cracking Sounds

It's also worth noting that other joints in the body, such as the neck and ankles, can make popping sounds. These noises are likely due to the same cavitation process and are generally not cause for alarm.

Is it Okay to Crack?

The short answer is yes, according to Dr. Klapper, if it’s a habit you have, it's not harmful.

  • Cracking your knuckles is primarily a benign habit.
  • It's not something that needs to be corrected for health reasons.

Conclusion

To reiterate, based on Dr. Klapper's findings, cracking your knuckles or other joints is not harmful. It's a normal occurrence that is related to the movement of gases within joint fluids. If you enjoy doing it, there’s no need to worry about negative health consequences.