The femur, commonly known as the thigh bone or thighbone, is the longest, strongest, and heaviest bone in the human body. The name of the bone is derived from the Latin word ‘ femur ‘, meaning ‘thigh’. It is the only bone present in the thigh region, extending from the hip to the knee.

The femur (Latin: os femoris), also known as the thigh bone, is the only bone forming the thigh. It extends between the hip and knee joints, and it is the longest and strongest bone in the human body.

The femur, or thigh bone, is the longest, heaviest, and strongest bone in the entire human body. All of the body's weight is supported by the femurs during many activities, such as running, jumping, walking, and standing.