How the knee works
Your knee is a complex joint serving as the meeting point for three major bones: the tibia (shin bone), the femur (thigh bone), and the patella (knee cap). Ligaments and cartilage are tissues connecting and protecting these bones at the knee joint.
Cartilage: a key connective tissue
Cartilage is a strong, rubbery tissue found in many parts of the body, including joints. There are two types of cartilage found in the knee:
Meniscus—acts as a cushion between the bones
Articular cartilage—covers the ends of the bones to ensure smooth movement