Hello, I m a 65 years female with chronic arthritis on the knees. I m always in pain and no matter how much I exercise my knees, nothing seems to help, I take therapy, had a series of injections and I m still in a lot of pain, specially when I put pressure on the knees, like getting up, going up and down the stairs and when I walk no more than 3 or 4 blocks, I have to stop and stretch my legs. My doctor said that he doesn t see that a knee replacement won t help much since my pain is from arthritis. Should I go have a second opinion?