Diffuse idiopathic skeletal hyperostosis (DISH), also known as ankylosing hyperostosis or Forestier disease, is not an arthropathy. The articular cartilage, adjacent bone margins, and synovium are not affected. DISH appears…
Hydroxyapatite deposition disease (HADD) is an extremely common disorder causing periarticular disease in the form of tendinitis or bursitis. Only rarely does it cause true articular disease. Calcium hydroxyapatite deposits…
The collagen vascular diseases (connective tissue diseases) are a group of diseases that have multiple, varied systemic manifestations. Articular symptoms play a minor role in the total clinical picture and…
The sacroiliac (SI) joint is perhaps the most difficult joint in the skeleton to image adequately to make an accurate diagnosis of a disorder affecting it. This is partially due…
Neuropathic osteoarthropathy presents the most dramatic radiographic picture of all of the arthropathies. As a result, it may produce a diagnostic dilemma. Although it is known that various neurological disorders…
Three deposition diseases are discussed in this chapter: hemochromatosis, Wilson disease, and ochronosis. Two of these diseases are extremely rare. Each has been associated with radiographic chondrocalcinosis, or calcification of…
The articular disorders that will be discussed in this chapter, pigmented villonodular synovitis, synovial chondromatosis, and amyloidosis, share some common radiologic imaging characteristics. These entities are more common in large…
As in the hip, the diagnosis of a disorder of the knee depends foremost on the evaluation of true joint space involvement. This evaluation is made most accurately through an…
In evaluating the spine, one observes the size, shape, and mineralization of the different vertebral bodies. These parameters become abnormal in various systemic diseases. For example, a large vertebral body…
Reactive arthritis (formerly known as Reiter disease) is usually associated with conjunctivitis and urethritis. It is a disease predominantly of males between 15 and 35 years of age and is…
