Go with Michael K's tuning for open D. You will find that by the time your finger heals, you will be playing maybe 30% of your repertoire in this tuning.It's great fun!

ps. I did the same with my right index finger several years ago, and I still lose sensation if it gets really cold. Luckily I live in Australia, so it doesn't happen more than about once every 2/3 years!

cheers

Bugsy