Osteoarthritis is a big word that describes a problem that some older people have with their joints. Joints are the places in our body where our bones come together, like our knees and our fingers. Sometimes, when people get older, their joints start to hurt and feel stiff. This can make it hard for them to do things like bending their knees or opening jars. Osteoarthritis is like when the joints in our body are not working as well as they used to. But don’t worry, there are ways to help people feel better and move easier!