Analyze my mechanics?

#1

I recently had tommy john surgery and I’m trying to find out if it was anything mechanical and something i can avoid in the future, or just overuse. Any suggestions or help would be great! I start throwing at 7:32
https://www.youtube.com/watch?v=8WIZolgme5U

#2

I do not know whether he is right or wrong, but Chris O’Leary is of the view that the Inverted W (as seen in the screen capture below from your video) causes timing problems that lead to arm injuries. Mr. O’Leary posts on this forum, or at least used to.