I was thinking a badly shattered kneecap, but I'm having trouble figuring out the prognosis on that with the best possible healthcare. (Most of the personal accounts I can find online seem to be people with extra problems caused by limited access to PT and/or delays getting surgery or seeing doctors.) Is it reasonable, even with near-future technology and excellent aftercare, for a shattered kneecap to leave a teenager with a permanent limp? If not, what kind of extra or alternative injury would I need to throw in there?
A ballpark estimate of how long he might spend in the various stages of recovery - bedridden, using walking aids, undergoing PT - would also be fantastically useful.
I've tried Googling "permanent limp" with many permutations on 'leg/knee injury', 'shattered kneecap', 'fractured patella', but that's netted mostly personal injury lawyers and stuff about animal injuries. Had a bit of a poke around on www.mybrokenleg.com and www.kneeguru.co.uk too, but I think I need more of an idea what I'm looking for first.
Any help and/or suggestions greatly appreciated!