Why do my joints hurt? And what can I do about it?

Arthrosis, arthritis and rheumatism: there are different types of joint pain that manifest themselves in different ways. But what are the differences? This issue of the health programme Diagnosis is dedicated to this topic. Head physician Prof Stephan Gadola, Clinic for Rheumatology & Pain Medicine, and orthopaedic surgeon Dr Christian Egloff provide information.