Discover why joint cracking increases with age. Learn about cartilage changes, fluid loss, and natural aging processes ...

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 ...

Immunostaining depicts collagen-2 (cyan) and nucleus (magenta) at the articulation in the little skate embryo's pelvic joint. Synovial joints are a key feature of most vertebrate skeletons ...

Synovial joints are a key feature of most vertebrate skeletons, providing more mobility and stability compared to other joint types. A synovial joint allows bones or cartilage to slide past each ...

But it’s not a feature that we share with all vertebrates. Humans, other land vertebrates, and jawed fish have synovial joints. The lubricated cavity within these joints makes them more mobile ...

Ars Technica has been separating the signal from the noise for over 25 years. With our unique combination of technical savvy and wide-ranging interest in the technological arts and sciences, Ars ...

The efficient architecture of our joints, which allows our skeletons to be flexible and sturdy, originated among our most ancient jawed fish ancestors, according to a new study. The efficient ...