This thread has information on wrist injuries -
http://tt.tennis-warehouse.com/showthread.php?t=422414&
This thread has information on tendinitis vs tendinosis - a very important distinction for the OP's question.
http://tt.tennis-warehouse.com/showthread.php?t=442912
Do you have tendinitis or tendinosis?
There are other threads that have general information on tendon injuries. They most often deal with
tennis elbow and
golfer's elbow.
Search tennis elbow, golfer's elbow and look at the tendon injury descriptions, illustrations, healing times, etc. especially in the CharlieFedererer replies.