Meniscal Tear
There are 2 C shaped cartilage between the thigh bone and the shin bone which acts as shock observers. The meniscus may be torn with twisting injuries. In elderly people there may be degenerative tear.
ACL
There are 2 cruciate ligaments In the knee joint. The ACL runs obliquely from the shin bone (tibia) to the thigh bone (femur). It prevents forward movement of the tibia on the femur and also provides rotational stability to the knee.
Osteochondral Lesions
Osteochondral Lesions or Ostechodritis Dessicans are lesions of the knee joint (lower end femur, patella, upper end tibia) that involve both the bone and the overlying cartilage.
Loose Bodies
Loose bodies in the knee joint can be made of cartilage or bone that are free floating in the knee fluid.
Synovitis
Synovitis is the inflammation of the synovial membrane, which is the inner lining of a joint. The Synovium normally produces a fluid which is useful for joint lubrication and helps in movements.
Patellar/Kneecap Dislocation
Patellar dislocation is when the kneecap moves out of its normal position. This could happen because of a twisting injury to the knee or when the kneecap is hit directly.