Know your feet! Your foot is one of the most complex anatomic structures. You have 26 bones, 33 joints, 19 muscles and 107 ligaments working together. So where does it hurt? The phalanges are the bones in your toes. The metatarsals run through the flat part of your foot. The cuneiform bones, the navicular bone, and the cuboid, function to give your foot a solid yet flexible foundation.The calcaneus is the bone in your heel. The talus is the bone in your ankle. The talus connects to the tibia and is the main bone in your lower leg.