Maybe, seems like Rondo has been pretty healthy and why I always defend Rondo when people talk about "effort".
Earlier in his career Rondo was very dependable, but the last two seasons he's missed 25% of his games.
This is despite the fact that it's those last two seasons where his effort level seems to have taken a drop moreso then ever.
I don't think Bradley is injury prone at all, at least not yet. He's had two injuries (ankle and Shoulder), which were completely unrelated to each other, over three season. It's just unfortuante that both were fairly significant injuries that have led him lose significant time.
Rondo has actually been injured quite frequently over the last couiple of seasons (usually several times per season), it's just that they are generally not major ones and he's usually lucky enough to either play through them or loose only 2 or 3 games.
Including this one Bradley has only had three career injuries (ankle, shoulder, ribs) but he's been unlucky enough that two of them have have been serious. This one looks like a Rondo-type injury in that it doesn't sound major, and I'm guessing if he does loose time he will be back within 3 games or so.
What's trouble is (as mentioned by somebody else above) we cannot win games without him. This hints partly at AB's value, but also hints partly at the wholes in our team. The two thing Bradley brings are effort and perimeter defense, so we clearly need another 'energy' guy on the perimeter who can bring those things. As much as Lee seems to do that (and he's done it well lately) it obviously isn't enough because we can't win games when AB is out.