Marginal erosions in rheumatoid arthritis (illustration)

Case contributed by Dr David Gendy

Marginal erosions in rheumatoid arthritis (illustration)

Illustration of marginal erosions in rheumatoid arthritis.

Case Discussion

This illustration shows the location of marginal erosions. They occur at the bare area of the joint, where the bone is not covered by articular cartilage within the joint capsule. These areas are often first to be eroded in inflammatory arthropathies.

In rheumatoid arthritis, the hypertrophic synovium and termed pannus destroy bone and cartilage within the joint. Although rheumatoid arthritis does not particularly follow a linear pattern, the bare areas usually erode first before the pannus erodes through the cartilage to the subchondral bone.

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Case information

rID: 75248
Published: 25th Mar 2020
Last edited: 27th Mar 2020
Inclusion in quiz mode: Included
Institution: Health Education North West - Mersey

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