Charcot perhaps? That's the complication that I've heard of? I am not sure if that's repairable with improved control but I know some people, e.g. Richard157 have reported improving their control seemed to mitigate complications.
I don't have any "diagnosable" complications and fairly tight control but, I'm 45 and have had T1 since 1984 and have noticed hair loss on my lower limbs (along with on top of my head, although I don't think that's from D...) and also generally slow wound healing. I scraped my hand on somebody at a race 100712 and it's only now getting better, what 9 weeks later? That doesn't seem "normal" but at least it got better but was kind of freaky while it was just "there". I hope that your brace helps your problem!