Many patients suffer from wrist disorders caused by tendon- and tendon-sheath-affections. Apart from this the successful treatment of these affections is an important implication concerning national economy. In Lower Saxony 2.3% of all RVO-insured patients have these disorders. Most tendon- and tendon-sheath-affections are due to chronic stress which is generally treated by a non-operative therapy. Only some need be treated by a surgical intervention. In this paper the most frequent painful tendon- and tendon-sheath-diseases are listed, their clinical appearance is shown and the different methods of treatment are discussed.