hi. i am 55 years old male with high cholestrol history. i am on Lipitor tab 20 mg for the last 4-5 years. For the last few moths/weeks, i am feeling pain in my knees and ankles apart from muscles fatigue. Sometime i feel severe pain like my cartilage may break. I knew about the side effect of Lipitor on muscles but does Lipotor also causes arthritis or joint pains ?? Thanks. Syed