Meniscus is extruded not only medially but also anteriorlyand radial displaced meniscusis associated with cartilage destruction in knee osteoarthritis

Abstract

Purpose: It has been believed that degeneration and wear of articular cartilage is an early change of the pathology of osteoarthritis of the knee (knee OA) and, other intra-articular structures, such as meniscus tear, subchondral changes, and synovitis, are secondary change of the disease. However, recent clinical researches have suggested that other intra-articular structures, especially meniscus and subchondral bone, may play a crucial role for increasing the risk for cartilage destruction in knee OA.