I Am 49 And Know I Need Hip Replacement .

I am 49 and know I need hip replacement . but the muscles in my legs feel tight all the time and very sore like I have been working out. I use to pour and finish concrete for 23 yr, which is hard on the legs and back ,but i have not done that for over 2 years. my legs hurt all the time i feel like i am 60. i have been checked for lymes wich was neg.