You might wanna keep an eye on your joints cos as far as I'm aware the roids will not increase your tendon strength (Mods please correct me if I'm wrong) and as you will be increasing weight fast on D'bol you will be placing more stress on your tendons.
Also as you have prolapsed disks, increasingly heavier weights will place greater pressure on your lower back. I have the same problem and have noticed that my back is worse than usual while on a cycle, Also I have strained a tendon in my knee too so hit as buggered up my leg routine. I do a lot of warm ups and stretching so don't think it came from the lack on warm up. Coming to the end of my cycle now.
Don't take this as gospel cos I'm no expert, just my experiences
