It’s a scenario most runners know well: you add miles to your long run, switch from treadmill to pavement, or start pushing paces and suddenly, something hurts. Sometimes the pain is a dull, nagging discomfort that fades as you warm up. Other times, it sharpens into a pinpoint spot in your shin that makes every step miserable. That’s when the questions start: Is this just shin splints, or is it something more serious—like a bone stress injury? Both conditions sit on the same