After a longish but slow hill run, the next day I found I had a burning sensation on the inside back of my left knee. I have subsequently been able to run but the next day the back of the knee has been sore. I've never had a problem with ligaments in the knee in this way, but this is what it feels like. Running in itself doesn't hurt it, but its worse afterwards. I can make it hurt by twisting my foot inwards and putting pressure on it sitting inmy chair. Firstly can anyone confirm my diagnosis based on what I have said! Secondly, will I need to lay off running for a few weeks? Thanks.