A new analysis of the bones and muscles in ancient fish gives new clues about how the shoulder evolved in animals -- including us. A new analysis of the bones and muscles in ancient fish gives new ...

The scapula has its own set of joint actions: The shoulder girdle has a set of joint actions specific to motion of the scapula. Although this may seem like just another set of confusing terms to ...

Posterior shoulder dislocation occurs when the top of the upper arm bone, known as the humerus, moves backward out of its socket. This causes pain, muscle spasms, and a limited range of motion. The ...

A new analysis of the bones and muscles in ancient fish gives new clues about how the shoulder evolved in animals – including us. The shoulder girdle – the configuration of bones and muscles that in ...