In reply to Steve89:
Hi Steve,
It's great that you are spending some time warming up properly! Make sure you build up intensity slowly and finish with some higher effort hangs.
It is important to have good strength in a number of grip positions. It you are the type of person who over relies on crimping everything then this could mean you could potentially overload the pullies that are used in that grip position. If this is the case I would really try to focus on improving your open hand and half crimp strength (it takes time but you will benefit from it). You will find you can use an open hand on holds that you used to have to crimp on. Spreading the load to other area of the fingers. This will also make you a better all-round climber. It is worth mentioning though there is nothing wrong with crimping and we all use it on certain holds and when we are pushing ourselves.
I have also found that people who tend to be of a heavier build or are very strong in there upper body but have not climbed for a long time are more prone to getting finger injuries.
Make sure you are regularly stretching and completing other exercises to help look after your fingers (see article for some suggestions).
In my opinion using a fingerboard appropriately to help increase the strength of your fingers is a really great way to help reduce risk of injury as well.
Make sure you are not dehydrated when climbing.
Adequate nutrition + protein for recovery.
Train consistently with overload. Sporadically having really hard sessions is not the best.
Have short high quality sessions and don't climb till exhaustion.
Do not become fatigued enough that your fingers start to open up on holds (high risk!!)
Try to avoid foot slips and holding uncontrolled dynamic moves to small holds (potential overload). Work on your foot technique if this is the case.