The fabella, a small bone in a tendon behind the knee, was lost over the course of early human evolution, but these days it’s becoming more common, according to a study published this week (April 17) ...

Ready for a good old-fashioned knees up? Here's everything you need to know about knee anatomy, knee injuries, knee pain and knee gains. As a simple pivot joint, the knees serve to flex and extend ...

The knee was much older than the earliest known ... celebrated their discovery -- was the most complete hominid skeleton that had been found up to that time. Although Lucy's skull was incomplete ...