Edit - Oops, everything below is about dealing with it, not avoiding it. To avoid; dont play tennis, dont showoff your strength, stretch and be gentle. As you get old your tendons lose thier flex.
here's the original post...
So I met with my Orthopedist (fatherinlaw) the other day who diagnosed me as having tennis elbow. (only about 50% of those diagnosed with T-E actually get it from tennis).
I got mine showing my kids how heavy a block I could lift with a pinch grip (idiot).
Here's the advice;
1. Deal with it. Almost all cases heal by themselves over time.
2. Take your time learning to climb differently so you dont pull on those tendons so much.
3. Take a double-dose of 250mg of Aleve and stick with it for the full 10 days. This will reduce the swelling and give your tendons a chance to relax.
4. Get a cortisone shot if the pain is intolerable. It will hurt more the next day, but will help in the long run.
I have been nursing mine but about to go on a week+ climbing trip which will work the hell out of my T-E. I started a heavy Aleve dose last night and am considering but trying to avoid the shot.