Which bone is the large weight-bearing bone in the lower leg?

Which bone is the large weight-bearing bone in the lower leg?

• A. Fibula
• B. Tibia
• C. Radius
• D. Ulna

Answer: (C)

Weight distribution in the lower leg centers on which bone supports most of the body's weight. The tibia, or shinbone, is the thick, strong bone that directly bears the load from the knee down to the ankle and forms the knee and ankle joints. Its robust shaft is built for compression during standing and movement. The fibula runs along the outside of the leg but is much thinner and mainly provides muscle attachment and lateral ankle stability, bearing far less weight. The radius and ulna are arm bones and do not participate in leg weight-bearing.

Weight distribution in the lower leg centers on which bone supports most of the body's weight. The tibia, or shinbone, is the thick, strong bone that directly bears the load from the knee down to the ankle and forms the knee and ankle joints. Its robust shaft is built for compression during standing and movement. The fibula runs along the outside of the leg but is much thinner and mainly provides muscle attachment and lateral ankle stability, bearing far less weight. The radius and ulna are arm bones and do not participate in leg weight-bearing.