Joints often crack due to harmless gas bubbles in fluid or tendons moving over bones. While usually normal, persistent pain, ...

Whether you love it or hate it, cracking knuckles is a common habit we've likely all done at some point. It's one of life's simple pleasures for some people, who crave the satisfying "pop" and ...

A secondary version can feature the same inflatable cuff system. Instead of lifting the user, the floor can lower, and the person remains elevated in the cuff while their joints are cracked. The ...