Middle age is when you get to know your joints. I have spent the last few years learning that my many youthful party tricks—popping shoulders out of their sockets on a whim, bending elbows ...

Nearly all of us have experienced our joints ‘pop’ at some point in our lives. Whether it was from cracking our knuckles, getting adjusted by a chiropractor, or the inadvertent sound that sometimes ...

Synovial joints, the lubricated cavity that lets the bones in our shoulders, knees, and elbows slide smoothly against each other, provide freedom of movement to all vertebrates. Scientists have known ...