Knee Pain and back muscle catch. I use.

It's been 3 years I have pain in my right knee. This pain stated when I first started running. after running for a week It became so painful that I could not step a stairs. Pain is around lower part of cap and to relief pain I started wearing knee cap and stopped running.  Later I developed cramps in wrist and feet and when  consulted Dr Krishnia KIMS he said it's due to high uric acid levels (8.2) and suggested daily Fobostat 40 mg for life time. It's been three years I am dealing with this and now my left knee is paining slowly. Also it becomes impossible to sleep on my back up and knees down as the pressure on knees becomes painful and unable to sleep. Unfortunately I am unable to find right solution and my gut feeling is that it is not a major problem and with proper advise this can be completely cured. And on lower left side of my back I have mild muscle catch from last 6 months ( above my love handles) which is not getting better and I feel it is bcz on mattress I use.