Metatarsal stress fractures normally take place at the second and third metatarsals of a foot. These happen to be thinner and longer than the first metatarsal, which is located right next to them. When you are pushing off for a run or walk these are the two bones that feel the maximum impact of the move. Stress fractures can also occur in a number of other bones in your feet and ankle area. It could happen at the calcaneus, which is located in the heel, fibula which is basically the outer bone in your ankle, the lower leg area, and the talus, which is a tiny bone located in the ankle joint.