There are many types of joints, including joints that do not move in adults, such as the suture joints in the skull. Joints that do not move are called "fixed." Other joints may move a little, such as the vertebrae. Examples of mobile joints include the following:
- ball-and-socket joints
Ball-and-socket joints, such as the shoulder and hip joints, allow backward, forward, sideways, and rotating movements.
- hinge joints
Hinge joints, such as in the fingers, knees, elbows, and toes, allow only bending and straightening movements.
- pivot joints
Pivot joints, such as the neck joints, allow limited rotating movements.
- ellipsoidal joints
Ellipsoidal joints, such as the wrist joint, allows all types of movement except pivotal movements