Medically reviewed by Theresa Marko, PT There are three main bones in the leg. The femur is the long bone in your thigh that ...

Some think the phrase "break a leg" refers to crossing the "leg line" on stage. This was an invisible line separating the main stage from the wings, where actors would wait to go on stage.

"Break a leg out there!" This use carries the same meaning: You hope for their success and wish them luck. Before a job interview: Suppose someone is about to go in for an important interview ...