The difference between patella and meniscus can be discussed from three aspects: 1, location, patella and meniscus in the knee joint location has a big difference, patella in the anterolateral knee joint, the shape of the round, in the superficial position of the knee joint, while the meniscus is located in the internal part of the knee joint, there are a total of two pieces, inside and outside of a piece of each. 2, the composition of the patella is made up of dense bone, cancellous and osteoarticular cartilage, in the seeds of bone belongs to the largest The composition of the meniscus is relatively simple, mainly composed of fibrocartilage. 3, role, the role of the patella is as a fulcrum to the knee joint to support the role of the quadriceps muscle to play a role in the quadriceps muscle as a fulcrum, so as to play a role in the knee joint, and the role of the meniscus is to play a role in stabilizing, cushioning vibration, and at the same time can also reduce the friction.