I'm always looking to hone my skills as a writer. To do so, I read as much as possibly can. Teacher, parents, and you know, "they" always say you can learn a lot just by reading. So I read, and I learn. And this little piece has probably taught me the most about how best to use descriptive words descriptively...
Now, let's break it down:
Wing = Arm
Minus his tonsils = probably just means the guy had his tonsils taken out (very important to pitching, obviously)
Kinked his arm = Kinked his arm