Which is the longest bone in the human body?

The femur, or thigh bone, is the longest and strongest bone in the human body. It extends from the hip joint to the knee joint, typically measuring about 25-30% of a person's total height. This substantial length is necessary to support the body's weight and facilitate major movements like walking, running, and jumping. In contrast, the pelvis is a complex structure made of multiple fused bones rather than a single long bone. The clavicle, or collarbone, is relatively short and connects the arm to the trunk, while the fibula is a slender bone in the lower leg that runs parallel to but does not match the femur's length. Therefore, among all skeletal components listed, the femur is definitively the longest.