Knee

Knee joint is composed of three bones. Thigh bone called Femur, Shin none called Tibia and kneecap called Patella. Articular surface of all these is covered by a smooth surface called CARTILAGE. Normal cartilage prevents friction between bones and provides pain free smooth movement like flexion and extention. Between cartilages of femur and tibia, there are two meniscus medial and lateral. These menisci increase the surface area and also aids in preventing friction while flexion and extension movements. These menisci also prevent jerks and increase its stability.