I had it about 20 years ago.
Right arm and right side of back atrophied alarmingly due to nerve damage – my right half looked like I’d just escaped Belsen. Gradually regained function, but I still cannot trust my right arm because it still goes floppy sometimes without warning when it’s under load – it was “interesting” when that used to happen when I was hammering my MX bike through tight stuff. Any heavy upper body exercise still leaves me knackered for days. No problem on the bike these days though, legs are good.
Hardest thing was going from being really really fit and strong to a wet rag. For the first few years I tired very easily and there was some days I was extremely lethargic. I’ve learned to not push it when I’m feeling like that.
My understanding is that the nerves that get destroyed are replaced by adjacent ones, and you make a recovery. My right hand still misses anything thrown to it by 2cm if I don’t get a chance to think 🙂
The downside of the recovery is that there may be dieback of those adjacent nerves after about 20 years. At least that’s what I was told. My 20 years are up, but so far, so good.
Although I would be regarded as having medically recovered, I have never regained the level of fitness or strength that I used to have and I have never been able to exercise at my previous intensity.
Good luck and keep us posted on your recovery. Don’t try too much too soon.
Edit: just read this through again – it sounds a bit like a jeremaiad – I may feel I’m not up too much, but I’m still able to ride 24 hour solos on my single speed, but I gnash my teeth because I know it could have been better.