Recovery time period

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I'm new here and before anyone tells me to stop posting and do my research, I already did and everyone had different recovery periods.
First off I'm in my early 20's and extremely fit. I plan on doing quadrilateral lengthening (external femurs and tibias, First surgery one femur and opposite tibia and second surgery vice versa) I spoke to Dr. Solomin about this and also with Dr. Kulesh. We both agreed that 12cm was okay and there has also been a patient here on the forum who did more.
I am curious as to how long my recovery will take? I have approx 1 year.
Now, I'm not expecting to start jogging and running like an athlete or anything like having a completely normal gait but would I be able to recover to the point where I am able to walk with crutches and do a simple task like drive an automatic car?
Ps. I am fully aware of the risks involved and understand that many do not favour externals but I do not pick money from trees and I am working in my budget 

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Would you reckon I could walk with the aid of crutches within a year?
Judging by what you said I could be walking normally under 2 years.
Thanks for the reply
Oh and, do you have a surgery coming up soon? Or already completed?

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Thats good to hear man, I'll keep you updated on my LL too.