What Causes Knee Pain And Thread Veins On Legs?

Hi, may I answer your health queries right now ? Please type your query here...hello my mum has had a sore knee for about 4 weeks now and it keeps getting worse her leg has started to swell about 2 weeks and she is daily getting more thread veins she has also started to get pain in her other leg and knee and thread veins are on both swollen legs and knees she is has a oppointment at the doctors next week but we need to know if it is urgent we went to the walk in centre doctors 3 weeks ago and he said it sounds like oesteorthistits do you get lots of new thread veins with this or is it something else