No, you only have to refrain from starting new threads if it's your fingers that are injured; unless of course you can type with your nose, in which case you don't even need to stop then.
All the same, I hope that you get over your injuries and get yourself running up the hill again in 2008.
I was out of action for 2 years in the mid nineties, hobbling around with constant ankle pain, thinking I'd never run again, so I can empathise.