Zocor and prednisone

I am 71 years old, I have been taking 80mg of ZOCOR ( Simvastatin ) for the past 16 years. five months ago I started to hurt in my lower back, hips,Knees,thighs, for two months then it traveled to my shoulders, wrist, hands, fingers. the Dr. gave me a round of prednisone (one shot and 11 pills) the pain stopped and everything was wonderful for two weeks,the Dr. stated that I had avused my body in the years gone by now the pain has started back in my shoulders, wrist, hands the pain is very strong,and my legs are starting to get weak again, I am taking Naproxen 500 mg two times a day and also taking Hydrocodne10mg every four hours also have Oxycodone 10mg to take every four to six hours, I have mentioned the results that I have read about the Statins in this forum but the doctor, does not act like it has any significance. does anyone have any suggestions??? if so please let me know, this pain is killing me, if you have any info. please email me at. ******