Arthritis

Abstract

In this chapter, after an initial introduction and overview we will review the appearances of common imaging features seen in different arthritides affecting the knee. The chapter will discuss both radiographic and, where pertinent, advanced imaging appearances. Subsequently, the imaging features of the common arthritides affecting the knee, including mechanical or degenerative, inflammatory, and crystal arthritis, will be discussed. In each case the chapter sets out to highlight features which will help the radiologist to make a specific diagnosis, or at least a sensible differential as to the cause of the arthropathy. It is all too easy to dismiss the appearances of knee arthritis as osteoarthritis, given the ubiquitous nature of this condition. It is hoped that having read the chapter, the reader will be able to appreciate imaging features that should make the radiologist identify other conditions which may have different implications to the patient and clinician.