A Quick Guide on Joints and Ligaments and How to Care for Them Joints and ligaments are some of the most crucial parts of our body's musculoskeletal system. They are commonly injured in so many ways that you have to know more about them in order to take better care of them. This is a quick guide about joints and ligaments, how to prevent injuries in the area, and how to treat an injury effectively. Grab the Easy Study Guide to learn more!