In reply to SuperstarDJ:
Hi David, have a read of the article I wrote with Nina Leonfellner for UKC about such injuries here:
http://www.ukclimbing.com/articles/page.php?id=6193
There are many ways of analysing how serious the tear has been and a lot of rehabilitation to get on with once the initial inflammation has gone down.
The most important to help with inflammation is the cold water treatment - a bowl of cold water with 6 or so ice cubes in it. Put your hand in it (fully submerged if A1) and keep it in there for 5-10mins. (If the right temperature, your hand should turn a nice fleshy Pink colour).
Once the time is up, remove, dry and let it warm up naturally (too early for cold and heat treatment).
Repeat for 3 sets and 3 times daily.
Once the initial inflammation has gone down, sponge work, elastic band strengthening and a lot of hand massaging helps get the blood to the injury.
REST is crucial and anything that hurts it will add to the scar tissue, so try to let it heal well. Keep up any gliding (full range of motion) exercises on a daily basis to make sure the scar tissue doesn't create issues with trigger finger etc...
Any questions ping me an email and I can help/put you in contact with the best people.
Thanks,
Robin