Have continuos numbness in my left knee, prior to that, one month earlier I had sciatica, Dr. S gave me steroids & ibuprofen 800 mg ..since then it s been a month, and I play frisbee almost daily and it is still numb 24/7....and when I sleep sometimes my left arm goes numb frequently... I have to switch sides to sleep, I am concerned that water on the knee might be the problem, and the arm issues also A concern... My age is 54 , smoker & occasional drinker.... Any advice?