Which of the following is an example of a Hinge joint?

Correct option is D

A hinge joint permits movement in one plane—flexion and extension—like the opening and closing of a door. The elbow joint, formed between the humerus and ulna, functions as a hinge joint. This type of joint restricts motion to a single axis, ensuring stability and control. Hinge joints are ideal for rapid and forceful movements, such as lifting or pushing. They are found in the knee, elbow, fingers, and toes.
Explanation of options: (a) ✘ Shoulder joint – It is a ball-and-socket joint, which allows multi-axial movement including rotation and circumduction. (b) ✘ Hip joint – Like the shoulder, the hip is a ball-and-socket joint, providing flexibility in multiple directions. (c) ✘ Atlantoaxial joint – This is a pivot joint allowing rotation of the head, not back-and-forth hinge movement. (d) ✔ Elbow joint – A classic hinge joint that allows flexion and extension in a single plane.