Watch what happens when you crack your joints
Scientists have been trying to figure out what makes our joints crack for years.
It’s the question we thought we all knew the answer to, but really we didn’t have a clue. Scientists have been trying to figure out what makes our joints crack for years, and they may finally have the answer: cavity formation (whatever that means). The scientific paper’s abstract details:
Sounds emitted from human synovial joints vary in their origin. Joint sounds that occur repeatedly with ongoing joint motion arise typically when anatomic structures rub past one another. In contrast, “cracking” sounds require time to pass before they can be repeated despite ongoing joint motion. Although various hypotheses have been proposed over many decades regarding the origin of cracking sounds, none have been validated; the underlying mechanism of cracking sounds remains unknown.
