It is an important organ that knee allows us to travel up and down the stairs to sit stand or to yong. When osteoarthritis or not. Life will change no matter how inconvenient not to walk up and down stairs seemed fluent seat surfaces does not. Using the toilet seat, then get hard or difficult to absorb seat type and then ignited last May was already the journey. Therefore, we came to take care of it. Before that, it will go from us the better it will be for us to use for a long time.