First off, it depends what kind of work you do. If you have disabled legs and cannot work properly anymore, you might still do a desk job, like IT consultant or software developer.
Then please read a bit into the various diaries here on this forum. You might notice, that if you keep to reasonable amounts like 5-6cm and don't go to the meanest butcher doctors in town, you have a quite good chance at recovery.
With a goal of 10cm, you need a lot of strength and resilience for the recovery period, I think.