Originally Posted by the cat petter
The first thing you should do is change your technique! I had arm pain for a whole year playing tennis but this year I switched technique for my groundstrokes and serve so now I don't have any pain from tennis (unless I play waay too much).
Experiment with different techniques and find which one doesn't hurt the arm or which one does the least damage to the arm. THEN think about switching racquets, strings, dampeners...
What change did you make in technique?