Along the jogging trail in town, a woman is found sitting on…

Along the jogging trail in town, a woman is found sitting on the trail holding her foot. EMS is called to evaluate the patient. The healthy 45-year-old-female complains of burning and pain on the bottom of her foot. She has had this pain for about four weeks and it is worse in the morning. Today while she was walking, it became so bad she could not put weight on it. Her pain is most likely caused from: