Under the big toe joint, there are two bones that sit side-by-side. They are called sesamoid bones and they are completely normal to have. They serve as the attachment for a tendon that pulls your big toe down toward the ground. They are part of a pulley system in your body in that area. 

These two little bones can in some cases become injured or painful and we typically evaluate them on x-rays to assess for any conditions in these cases.