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 joints, the plain radiographic findings may be subtle, and the…
The joint changes in hemophilia are secondary to chronic repetitive hemarthrosis and intraosseous bleeding. Hemarthrosis occurs in 75 to 90 percent of patients with hemophilia. The first bleed usually occurs between the ages of 2 and 3. Repetitive bleeding episodes…
There are a variety of disorders that affect the joints in children. In the past all of the disorders have been lumped together and labeled juvenile rheumatoid arthritis. Although each disorder has different clinical and radiographic manifestations and course, it…
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 usually produce little in the way of radiographic change in…
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 hyaline or fibrous cartilage. However, if chondrocalcinosis is defined as…
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 in muscles, capsules, bursae, and tendon sheaths. Although this deposition…
Calcium pyrophosphate dihydrate (CPPD) crystal deposition disease is a common disorder and the most common crystal arthropathy. In a typical hospital population, one to three patients per week will be observed with some manifestation of this disorder. It typically affects…
Gout is the oldest recognized arthropathy. It was originally called podagra, from the Greek pous , meaning foot, and agra , meaning attack. In ancient history all arthritis was called gout. Today we know it to be a specific arthropathy…
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 to be a bone-forming diathesis in which ossification occurs at…
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 play a prominent role in the development of the osteoarthropathy,…