I agree with sookie
I had my left hip replacement done 22 yrs ago and it's still going strong . but putting the new hip in completely changed my gait I had limped so bad for so long before the hip replacement . that when they adjusted my leg length witht he new hip something had to give . in my case it was my knee. I had a few knee clean outs before having a total knee reconstruction that fixed the problem I haven't had knee problems for many yrs now .
lower back probs sure it hurts all the time but the knee is pretty stable so it def can be a by product of the hip surgery for sure .