Grumble about Watson's limp

Overall I liked the new Sherlock Holmes series, here are my spoilery general thoughts.

And now a spoilery grumble about the portrayal of Watson's limp in Sherlock. I don't know enough about PTSD to say anything about the portrayal of that. They didn't seem to be going to much effort to show it at all, really, apart from him being generally down to start with.

( Spoileryness. Doesn't spoil whodunnit )