marginal erosion


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marginal erosion

Bony destruction that occurs at the outer borders of a joint space in inflammatory arthritis such as rheumatoid arthritis. It is visible on radiographic images of joints, e.g., plain films or magnetic resonance imaging.
See also: erosion
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References in periodicals archive ?
6) Multiple marginal erosions and decreased joint space are seen at several metacarpal-phalangeal joints.
Although so-called marginal erosions of joints (the radiographic hallmark of RA) appear as negative spaces in the juxta-articular bone, they actually represent the presence of radiolucent pannus directly invading into bone.
TB arthritis may be confused with RA due to its radiologic features, including periarticular osteopenia and marginal erosions (6).