The main thing I was worried about was getting injured again, and that happened once during my recovery. I came back to quick, thought it was fine and it 'went' again. My injury was ligament damage in my right wrist. The problem with ligament injuries is they take quite a while to fully heal. After doing some research I found out that there's pretty much two phases of the injury - 1) initial repair, and 2) full repair. It will take quite a while for my ligaments to be back at full strength, but with the proper precautions I can workout pain free. So, what's the best way to start working out after an injury?
SLOWLY!
If you rush it, your injury will come back, if you start lifting too heavy weights too early, your injury will come back, and you could make it even worse. It's extremely frustrating not being able to pound the weights, but it is the best way. Whatever injury you have had, try and strap that area up. I strap my wrist up a fair bit and this gives the support that it needs. You want to start off light, slowly building up the intensity. This way you will give your body the best chance to ease itself back into training, rather than a sudden strain placed on the newly healed body part.
It does sound like common sense, but believe me, when you're injured you don't think 'slowly', you just want to get back into it. But you will thank yourself for easing back into training, as you're highly likely to not re-injure yourself!