Translated material
How do joints crunch? Vox video
The VOX publication very briefly and clearly explained what is happening when people crunch joints and whether it is harmful to their health. At the request of Medusa, the Vert Dider studio translated Vox video into Russian.
As VOX explains, the crunch occurs due to bursting air bubbles that are collected in synovial fluid, a lubricant filling the joint cavity. At the same time, it seems safe to crunch with joints - if you do not take into account the risks of injuries from people who are annoying this sound.
Researchers (including a man who crunched the joints of one hand for 60 years) did not find a connection between this habit and arthritis (English.).