Thank you all for the kind words and advice - I really appreciate it!

My mum emailed my PT's yesterday and told them about the pain in my knee and my PT called her back this morning to ask what sort of pain I was getting and where it was etc.

When my mum explained things to her, she said that she doesn't think it is from the splint as the area where I am getting the pain, isn't where the muscles work overtime when they are in the splint.

We have been adviced to go and see my GP if things don't settle down anytime soon to see what he thinks, especially seeing as though the pain I am getting in my knee isn't like RSD pain. They also suggested getting some really strong anti-inflammitaries to see if they help any.

I have an appt to go and see my PT's on the 23rd I believe (that was the earliest they could get me in as they said it seems as though a lot of children are developing chronic pain conditions at the moment) so they are going to take a look at my knee then to see what they think is wrong.

If the pain continues, I think we will probably go and see my GP as it's making me feel pretty sick and i'm not sleeping well. I think it's worse as I already have RSD in that leg and think I might have something else going on on top of that.

Thanks again for the advice, i'll keep you all posted when I can!!