One thing we can all do to reduce injuries that hasnt been mentioned is myofacial release. That is, taking a softball,lacross ball or whatever and roll your forearms,shoulders,biceps and triceps and around the elbow(not directly on bone) on the ball. If it hurts that means you have a 'trigger point' and you keep rolling on it and it will eventually stop hurting. If you have alot of pain when doing this you should do it daily until the pain is gone.
What is happening is over time you get knots in your muscles and facia(the thing covering your muscles like a sack) and that causes pain,decreased strength and reduced flexibility.
Also,stretch your shoulders,chest and forearms.
When you lose fexibility you lose strength,when you lose strength other muscles have to help then you will get injured more than likly.
I should mention Iam not a doctor but I am a personal trainer.