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Anatomy of a Joint

What is a joint?

Joints are the areas where two bones meet. Most joints are mobile, allowing the bones to move. Joints consist of the following:

Examples of the hip and knee joints follow:

Anatomy of the hip joint


Anatomy of the knee joint

What are the different types of joints?

There are many different types of joints and they are classified according to structure and their ability to move. Joints that do not move are called "fixed." Other joints may move a little, such as the vertebrae. Examples of mobile joints include:

Illustration of types of joints

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