EVERYDAY SCIENCE

Detailed explanation-1: -Such joints are known as hinge joints. Hinge joints are classified into the category of synovial joints. A synovial joint is a kind of joint which is found between two bones that move against each other, like joints of limbs. For example, shoulder, hip, elbow and knee.

Detailed explanation-2: -Hinge joints. Hinge joints, such as in the fingers, knees, elbows, and toes, allow only bending and straightening movements.

Detailed explanation-3: -The knee is the largest hinge joint in the human body. Hinge and pivot joints are both types of synovial joint. A hinge joint can be considered a modified sellar/saddle joint, with reduced movement.

Detailed explanation-4: -In a hinge joint, the ends of the bones are shaped in a way that allows motion in two directions, forward and backward. Examples of hinge joints are the knees (Figure below) and elbows.

Detailed explanation-5: -The knee continues to function primarily as a hinge joint.