"When you're throwing year-round, you don't have much time for all this fitness stuff," Altchek said. "So you're fitness gets sacrificed, Your arm is overloaded. That's a recipe for disaster."
Baseball wonders why pitchers' elbows keep tearing →
New York Mets medical director Dr. David Altchek says he's performing the procedure more often among teenagers, who are not as strong as professionals and are trying to impress with high velocities.