Wow, he is 81.
https://www.mlb.com/news/dr-ja...edic-surgeon-retires
Really interesting article; quotes him talking about youth injuries:
“These kids are throwing 90 mph their junior year of high school,” he says. “The ligament itself can’t withstand that kind of force. We’ve learned in our research lab that baseball is a developmental sport. The Tommy John ligament matures at about age 26. In high school, the red line where the forces go beyond the tensile properties of the ligament is about 80 mph.”
Andrews has met countless parents who think that if their sons have Tommy John at age 14 or 15, it will improve their chances of reaching the Major Leagues.
“It’s just the opposite, believe me,” he says. “When they get hurt early in their baseball career, they miss a lot of development, and the parents don’t have a clue about how that affects their career and their ability to move up the ladder.”