why do my knees hurt when i stand up for a long time

why do my knees hurt when i stand up for a long time. There are some references to why do my knees hurt when i stand up for a long time in this article. If you are looking for why do my knees hurt when i stand up for a long time you've came to the right place. We have posts about why do my knees hurt when i stand up for a long time. You can check it out below.