Q: What is a stress fracture? A: Stress fractures are partial breaks, or cracks in a bone. Walking or running will be painful, whereas generally there will not be pain during rest periods. They are usually considered an overuse injury, which can result from overtraining, switching running surfaces (soft to hard), or wearing shoes that provide inadequate support. If you suspect a stress fracture, see your family doctor or a sports-oriented podiatrist. Do not run at all for six weeks. Often crutches, and sometimes casting, are needed. The good news is that stress fractures usually heal without complications, provided diagnosis and treatment are done early.