Are bad mechanics, not pitch counts, at the root of arm injuries?

Writes Doug Mead in Bleacher Report:

“Many experts, including former major-league pitchers, believe that the rise in shoulder and elbow injuries is the result of poor mechanics, not pitch counts. Oftentimes, pitchers alter their throwing motion immediately following Tommy John surgery to prevent similar injuries in the future. For pitchers with significant shoulder injuries, a change in mechanics is also often needed to prevent further recurrences.”

Kyle Boddy has started a Seattle-based company called Driveline Mechanics to help pitchers improve on their mechanics.