I’d been referring to this injury that had been dogging me for three weeks a hamstring pull, but I knew that wasn’t right. For one, the pain was at the front of my leg, nearly to my groin; wouldn’t I feel hamstring in the back of my leg? And the more I worked it, the less it hurt. Seemed a hamstring would continue hurting, hurt even more, the more I worked out. So when the physician’s assistant returned to the exam room with the results of an X-ray, I was pretty sure I knew the diagnosis: stress fracture.