A joint is where two bones meet. Synovial joints are one of three types of joints in the body. Synovial joints are unique because they contain a fibrous joint capsule with synovial fluid.

The elbow joint is a synovial hinge joint, similar to the ankle and knee joints. Two or more bones form hinge joints that move along an axis, rather than rotate like the hip joint. The distal ...

The knee joint capsule is the structure surrounding the knee, made up of ligaments, bone, and fluid-filled cavities. It allows the full knee to have flexion, or bending motion, due to the folds ...

In a hinge joint, protective cartilage covers the bones, and a thick gel called synovial fluid lubricates them, allowing them to move without rubbing against one another. All hinge joints also ...