knieën

Knieën is the Dutch term for knees, referring to the joints that connect the thigh bone (femur) to the shin bone (tibia) in the human body. These joints are crucial for mobility, enabling movements such as walking, running, jumping, and kneeling. The knee is classified as a hinge joint, but it also allows limited rotational movement when flexed, which is essential for stability and agility.

Anatomically, the knee comprises bones, cartilage, ligaments, tendons, and muscles. The articular cartilage covers the ends of the femur and tibia, providing a smooth surface for movement and absorbing shock. The anterior and posterior cruciate ligaments, along with medial and lateral collateral ligaments, stabilize the joint. The quadriceps and hamstring muscle groups support movement and stability.

Knee injuries and conditions are common and can include ligament tears, meniscus injuries, bursitis, and osteoarthritis. Treatment varies from rest and physical therapy to surgical interventions such as ligament reconstruction or joint replacement, depending on severity.

The knee's design allows it to bear significant weight, often two to three times an individual's body weight during activities like running. Its complex structure ensures a balance between mobility and stability, making it one of the most vulnerable and most used joints in the human body. Understanding the anatomy and function of the knieën is vital for medical, athletic, and ergonomic applications, especially for injury prevention and rehabilitation.