Knee, elbow, and finger joints are all examples of hinge joints. Hinge joints are protected by cartilage and synovial fluid, a gel that assists with lubricating motion in the body.

Painful joints? Here's what your joint pain may be telling you about your health, according to rheumatologist Dr. Natalie Azar.

Hinge joints allow bones to move in one direction back and forth, much like the hinge on a door. This article looks at their anatomy and function and includes an interactive diagram.

Arthritis of the knee typically involves swelling, pain, and stiffness in the joint. But, there are different types of arthritis, and symptoms can vary. The knee joint is a hinge joint, named for ...

The knees are hinge joints, meaning they work like a door hinge to straighten and bend, unlike the hips and shoulders, which are ball and socket joints. Know your knee. César Pelizer.