Joint
A joint is a place where bones meet. Different kinds of joints allow different amounts and types of movement.
In everyday words
Your elbow lets your arm bend and straighten, while your shoulder allows movement in several directions. Some joints, such as those between many skull bones, allow little or no movement.
What to keep in mind
Joint is the name of a structure, not a diagnosis. Pain around a joint can involve several tissues; its location alone does not identify the cause.