The thigh bone, also known as the femur, is the largest, strongest, and longest bone in the body. It is primarily used for running, jumping, and standing. We use it just about every moment of every day, and therefore it needs to be very strong! For it's thickness, it is stronger than concrete. The average femur is strong enough to support over 30 times the weight of its owner, meaning it can withstand the compressive force of over 6000 pounds. That is the weight of over 1 and a half Volkswagon Beetles, or the weight of 2 and a half great white sharks!