Strongest human bone

The strongest bone in the human body is the femur, or thighbone. Ounce for ounce, the femur is stronger than steel. In laboratory studies using cadavers, it has been found that a force of between 7 kN and 13 kN is required to fracture a femur. In a healthy living person, the femur is even stronger: observational studies looking at car-crash injuries have concluded that a deceleration force of between 8 kN and 26 kN is required to break a femur.

In a healthy adult female, each femur can support around 30 times the average bodyweight.