
Stress fractures are common injuries and often found in athletes, including dancers. In the case of Mr. DeLay, who was taking up dancing for the first time (I suspect), he probably took on more than his body was conditioned for, a primary cause of injury. If you are planning on starting a running program, for instance, and decide that your first run will be a charity 10K, you have not conditioned your body to bear that stress. As a result, you put yourself at risk of injury, including stress fractures, sprains, strains, and tears.
Good luck to Mr. DeLay in recovering. His treatment will likely consist of immobilization for a period of time. Afterwards, he should be fitted for a custom orthotic to balance the forces to prevent an injury like this from happening again. I hope he continues his athletic endeavors when he heals, with the proper conditioning to go along with it.