Indy - hmm, 4 weeks? Seems a long time to just wait and see what happens. Again, I'd take more notice of what Sarah and Clive have to say on this but personally I'd feel I'd waited long enough.
My sister just had a knee op a week ago. She'd been having problems for a long time (6 months plus). They suspected a meniscus tear but said they wouldn't fully know until they poked the camera in (it was done keyhole). She was worried they would get in there and find nothing then she'd feel bad about wasting people's time. Turned out there was a massive zig-zag tear. They cut a load away and she is expected to make a good recovery.
Your situation may be different but unless I'm missing something, for now all they can do is make an educated guess. Only once they poke around inside can they really know what the problem is. Sarah/Clive feel free to correct me here.
TR24 - yes I probably need to do some cash collection. Would you all be ok with bank transfer? If not I can take a cheque. I'll PM you all individually.
Jen - congrats on the PB! You show those pram pushers who's boss! Where is the parkrun? We're due to come down at half term so perhaps I can grab Mrs Malcs and we can all do one together? Not sure on dates yet but it will be part of the school holiday week (16th-24th Feb). Are you around?
Sarah - I feel I need to clarify the ice bath situation. I am a bit of a wuss so I never use water in its ice form. I find it's cold enough just to run it from the cold tap (especially at this time of year). I then top it up with a little hot until I stop screaming like a baby. Seriously though, for the longer runs it works superbly. It doesn't have to be ice cold but you do need to stay in for 10-20 mins to get the benefit. Also you need to avoid a hot shower immediately after so as not to negate the effect. Hmm, I guess I'm not really selling this 
Tigger - hope your mum is ok. Re. the running - I agree, you can definitely do it following the advice given so far.
Clive - I have trouble enough running sober let alone having a cheeky one at every tavern en route. You already had my respect, now I'm just plain jealous! 
Edited: 04/02/2013 at 14:22