Why Your Finger Joints Click Snap and Pop

Rest assured that the most common causes of finger-popping are not a problem at all. Many people can make their fingers pop, often called cracking their knuckles. The sound you hear is thought to be caused by nitrogen bubbles moving in the fluid that surrounds your joints. That being said, if your noisy finger joints are associated with pain or swelling, it's good to see your doctor for an evaluation.