<s>[INST] For the past couple of days I have had deep pain in my right knee and ankle. The pain in my knee is just below the knee and feels like a rubber band constricting my leg. The pain in my ankle is also deep pain as if an injury to a bone and the pain circles the ankle. In addition to that, there is a bulge in the Achilles tendon that was extremely painful a couple of months ago. I have been fairly active as a 51 year old female, however I have already had total knee replacement on my left knee and disc fusion, rods, screws and cages placed in my low back. (Yep, walking train wreck). Lastly, the muscles on the insides of my legs feel as if I ve been riding a horse for days. Is there anything that could account for all of those symptoms, assuming it isn t due to stress & over use? This doesn t feel like pulled or strained muscles and I haven t had any falls or other injuries. [/INST] Dear Patient,With the history of knee replacement on the left side the possibility of having osteoarthritis on the right side is too high, also possible that your right ankle is also showing arthritis changes, what you need to do is get your joints screened with X Rays to see the status of your joints, may be your other knee will also need a replacement. As far as the status of one knee replacement and spine surgery goes, this is no more unusual, as with changes in lifestyle and increased life expectancy these are becoming a routine.  So just relax and get yourself screened, also if you are overweight than you should also reduce it as that will solve a lot of your problems.I hope I have been helpful in your understanding of your disease.Thank You </s>