knee

The knee is a complex hinge joint that connects the thigh bone (femur) to the shin bone (tibia). It allows for movement such as bending and straightening the leg, essential for activities like walking and running. The knee contains cartilage that cushions the bones, ligaments that stabilize it, and a meniscus that provides shock absorption. Proper function depends on the healthy interaction of these structures. Injuries, aging, or overuse can cause pain, swelling, or instability, making movement difficult. Maintaining knee health involves strengthening muscles around the joint, avoiding excessive strain, and addressing injuries promptly.