A method of improving cruciate ligament visualization in double-contrast arthrography.
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Arthrograms of the shoulder were evaluated in 10 patients with rheumatoid arthritis. The arthrographic findings common to all joints consisted of nodular filling defects, irregular capsular attachments, bursal filling defects and visualized lymphatic drainage. Findings unique to the shoulder joint consisted of rotator cuff tear, frozen shoulder, and biceps sheath dilatation. Since the agents used to treat patients with rheumatoid arthritis have profound side effects, it is important to exclude an associated rotator cuff tear and/or confirm the presence of glenohumeral rheumatoid involvement.
Sources of error in performing and interpreting knee arthrograms are discussed. Normal anatomic structures and technical factors can simulate tears in most areas of both the medial and lateral menisci. These pseudotears, as well as unrecognized true tears, occur more commonly in the posterior horn of the medial meniscus. Inferior meniscal recesses and coronary ligament irregularities of the posterior medial meniscus often represent incomplete tears. Diagnostic, etiologic, and therapeutic aspects of these recesses, or pseudorecesses, are discussed. Excessive intra-articular positive contrast medium may become localized and simulate a loose body in the joint.
A new device which facilitates stressing of the knee to obtain improved visualization of the meniscus is described. This device can be used for the examination of either the medial or lateral meniscus without requiring time-consuming adjustments.
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