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Mass-Like Arthropathies

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 magnetic resonance (MR) findings are distinctive. Despite the fact that these conditions are relatively uncommon, most radiologists will see these diagnoses several times during a career…

Hemophilia

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 occur between the ages of 8 and 13, with 50 percent of patients developing permanent bone changes around the joint. The radiographic change in the joint…

Juvenile Idiopathic Arthritis

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 may be impossible to distinguish one disorder from another at a specific time within the course of the disease. Therefore, the better term “juvenile idiopathic arthritis”…