Gonarthrosis (knee osteoarthritis)
Knee osteoarthritis is the progressive wear (arthrosis) of the knee joint. Such wear can be due to a predisposition or may be the result of an illness or accident. Older people in particular are affected.
Knee osteoarthritis takes two different forms: primary (due to predisposition) and secondary (acquired) osteoarthritis. This primary knee osteoarthritis frequently occurs in more advanced adult age, so that about 75% of all people older than 50 years and around 90% of the over 70-year-olds suffer from corresponding joint changes.
Secondary osteoarthritis can be the result of an accident, for example in the case of a direct injury to the cartilage. Other causes include inflammation or also an internal illness such as rheumatism.
Many individuals are able to live with the diagnosis so that the ongoing treatment of joint wear is not required. The quality of life is impaired in about 20% of the affected individuals.