Generally speaking, I've often considered Jackie Chan to be a 'real life example' of how someone would be if they lived a fraction of what Bruce Wayne has been depicted (in the comics) going through, so I'm not dismissive of Bruce's general recovery...just the 'magic' behind it. The brace for his knee is fine, but there's not remedial training (or re-training). The doctor said his shoulders were messed up, too, but we know Bruce was able to use a bow. Maybe it caused him great pain to do so, we don't know - based on the doctor's analysis, though, it probably did. Heck, for all we know, Bruce was hopped up on pain killers and adrenaline - especially with the thrill of the chase teased by 'Catwoman'...Does it work with real life logic? No. This is one place where some of us accept a slightly different logic on the movie universe, like how I can accept the back smashing treatment under the 'magic oriental medicine' trope even though there's no real logical way it could work.
I definately agree that they should not have made his injuries so serious early on, and should have made it more obvious that he had a mental problem that was effecting him physically.