I have been experiencing numbness, stinging, above my right knee (replacement in 2014), in either a muscle or nerve. I took Prednisone for 2 months, thinking nit would calm one of these things. However, still have quite a bit of pain daily. Am seeing a physical therapist, doing some exercise, and water aerobics 4 mornings a week. Really tired of 3 months of pain. Can you offer any solutions. Do you believe in chiropractors? Thank you. I am 85 years old.