Why does it ring when your fingers break?

There is synovial fluid between finger joints, so you should break your fingers first. This overstretching and overstretching action will enlarge the gap in the closed cavity of the original joint. In this closed space, if the gap becomes larger, it will inevitably reduce the pressure in the joint capsule. At this time, the dissolved gas in the synovial fluid will precipitate, form tiny bubbles, and continue to fuse to form larger bubbles. When the bubbles fuse to the maximum, they will burst and then make a noise.

Moreover, because the gas and liquid in the human body are blocked by the skin and cannot be excluded from the body, 10 to 20 minutes later, these gases will dissolve in the liquid again, and then straighten the finger joints and make a noise again. This is the reason for the so-called joint echo when snapping your fingers.