Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Knee Replacement ?
    ### Response:
    Knee replacement may be either total or partial/unicompartmental. In total knee replacement, as the name suggests, the entire knee joint is replaced. You will likely need a total knee replacement if you have damage to several parts of your knee. In partial/unicompartmental knee replacement, the surgeon replaces just the damaged part of the knee.
    