The knee is a modified hinge joint, which permits flexion and extension as well as slight internal and external rotation. The knee is vulnerable to injury and to the development of osteoarthritis.

Jan 25, 2023 · Knee pain may be the result of an injury, such as a ruptured ligament or torn cartilage. Medical conditions — including arthritis, gout and infections — also can cause knee pain.

Jul 20, 2025 · The knee is the biggest joint in your body, and it absorbs and supports a lot of your weight as you move. That’s why it’s one of the most commonly injured joints.

Apr 18, 2025 · Knee pain can result from injury, arthritis, or overuse. Learn about its causes, symptoms, and treatment options.

Sep 5, 2025 · The knee joint is a complex structure that involves bones, tendons, ligaments, and muscles for normal function. Three bones come together in the knee joint: the tibia, femur, and patella.

Apr 24, 2024 · Do you have knee pain? Learn about the common causes, based on the location of the pain, and when you should see a doctor about your pain.

knee, hinge joint that is formed by the meeting of the thigh bone (femur) and the larger bone (tibia) of the lower leg. The knee is the largest joint in the body and has to sustain the greatest stresses, since it …