What is the larger of the two bones that form below the knee?

The tibia, often referred to as the shinbone, is the larger of the two bones located below the knee, the other being the fibula. The tibia is crucial for weight-bearing and is the main bone that supports the body's load during activities like walking, running, and jumping. It is connected to the knee joint at its proximal end and forms the ankle joint at its distal end, making it essential for proper movement and stability of the lower leg.

In contrast, the fibula is a thinner bone that runs parallel to the tibia and primarily serves to provide support and stability to the ankle. The patella, commonly known as the kneecap, sits in front of the knee joint but is not located below the knee as part of the lower leg bones. The femur is the thigh bone and is located above the knee. Therefore, in the context of the question regarding the bones below the knee, the tibia is correctly identified as the larger bone.