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
References in periodicals archive ?
(6) Multiple marginal erosions and decreased joint space are seen at several metacarpal-phalangeal joints.
Additionally, similar to RA, PsA causes marginal erosions giving a "mouse ear" appearance in the interphalangeal joints.
TB arthritis may be confused with RA due to its radiologic features, including periarticular osteopenia and marginal erosions (6).