Joints are the connections between bones in the human body, allowing for movement and flexibility. They play a crucial role in supporting the body's structure and enabling various activities, from walking to grasping objects. The type of joint determines the range of motion, with examples including hinge joints like the knee and ball-and-socket joints like the shoulder. In addition to their structural importance, joints are also vital for overall health. They are surrounded by cartilage, which cushions the bones, and are supported by ligaments that provide stability. Maintaining joint health is essential for mobility and quality of life, making awareness of conditions like arthritis important.