Ancient fish had synovial joints, challenging the idea that flexible skeletons evolved on land. Fossils and modern fish show ...

Jawed vertebrates known as gnathostomes appear to be the first creatures with the synovial joints, according to Shubin. These joint cavities can be seen in cartilaginous fish such as skates or sharks.

Researchers selected sheep for these trials specifically because their knee joints closely approximate human joint size, structure, and biomechanical properties—providing a relevant ...

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 study published in the open ...