It couldn't perfectly be 360 degrees, or the join would have to be infinitesimally small. Those size joints do not normally occur in nature. Of course, if you mean ball-and-socket joints... well if every joint was the joint between your leg and your pelvis I guess. What about the muscles? The tendons and ligaments would have to stretch pretty far without tearing! Pulling a muscle? I know sometimes I wake up early, and my mind is more awake then my body. I perform a very quick neck movement, and my trapezius muscles fell preeety bad...