ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Normal knee. Coloured X-ray image of a healthy knee, showing the joint between the femur or thigh-bone (top) and tibia (the larger bone at bottom). This is a frontal view of the left leg. The patella, also known as the kneecap, occurs in the region of the head of the femur coloured dark red. Two discs (unseen) of cartilage, the menisci, cover the end of the femur and tibia. These discs reduce the friction between the bones during movement and increase the stability of the knee. The fibula is the thin long bone of the lower leg (at bottom left).
Model release not required. Property release not required.