髌骨劳损是指髌骨软骨软化症和髌骨张腱末端病的统称。这两种伤虽然发病的部位不同，但他们都是劳损性疾病，可单独发生，也可同时存在。髌骨劳损多半是慢性损伤，膝部长期遭受微细磨损而致，少部分是急性损伤而诱发此伤，使组织细胞代谢发生肿胀、粘连、出血，使软骨变性，发 Patellar strain refers to the chondromalacia patellae and patellar tendon end of disease collectively. Although the incidence of these two injuries are different parts, but they are all devastating diseases, can occur alone, but also exist. Most patella strain is chronic injury, knee long-term wear and tear caused by a small part of the acute injury caused by the injury, the metabolism of tissue cells swelling, adhesions, bleeding, cartilage degeneration, hair