Which pair are the primary weight-bearing bones of the leg?

Which pair are the primary weight-bearing bones of the leg?

• A. Tibia and fibula
• B. Tibia and femur
• C. Femur and humerus
• D. Fibula and femur

Answer: (B)

The bones that actually bear body weight in the leg are the femur and the tibia. The femur, or thigh bone, carries weight from the hip down to the knee, while the tibia, the shinbone, takes that load from the knee to the ankle. The fibula runs alongside the tibia but is not a primary weight-bearing bone—its main roles are muscle attachment and stabilizing the ankle. The humerus is an arm bone, not part of the leg’s weight-bearing structure. So the pair best describing primary weight-bearing bones of the leg is the femur and the tibia.

The bones that actually bear body weight in the leg are the femur and the tibia. The femur, or thigh bone, carries weight from the hip down to the knee, while the tibia, the shinbone, takes that load from the knee to the ankle. The fibula runs alongside the tibia but is not a primary weight-bearing bone—its main roles are muscle attachment and stabilizing the ankle. The humerus is an arm bone, not part of the leg’s weight-bearing structure. So the pair best describing primary weight-bearing bones of the leg is the femur and the tibia.