How old are you and what general physical condition are you in? Some martial arts are "gentler" and some are more prone to get you injured.
Skowinski-wife and I go to a school that is focussed on Brazilian Jiu Jitsu, but also has Judo and MMA training. You might think about finding a place that offers more than one martial art, if that exists where you are.
"Nature never hurries, yet everything is accomplished."
- Lao Tsu