Musculoskeletal Key

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…

For years psoriatic arthritis was considered part of the spectrum of rheumatoid arthritis. The classification of psoriatic arthritis as a “rheumatoid variant” persists today. However, the radiographic manifestations, along with…

Pain in the shoulder is a common problem affecting all ages of the general population. It is the second most common cause of musculoskeletal pain. Radiographic diagnosis of the disease…

A systematic assessment of foot radiographs for the manifestations of arthropathies is important, because the foot may be an early site of involvement in a systemic arthropathy such as rheumatoid…

The assessment of hip pain depends on a systematic review of a quality anteroposterior (AP) view of the pelvis. The femurs should be internally rotated approximately 15 degrees, the pelvis…