Intra-articular rheumatoid nodules and triggering of the knee joint.

Diamant, Z; Hooning van Duyvenbode, F J; Eulderink, F; Janssen, M · Ann Rheum Dis · 1992

case_series · Level IV

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Abstract

Rheumatoid nodules are a common extra-articular manifestation in rheumatoid arthritis. Intra-articular localisation of these nodules is rare and may produce clinical symptoms. Seven patients with walking problems due to an intra-articular rheumatoid nodule, which became entrapped on the ridge of the tibial plateau of the knee joint resulting in a phenomenon referred to as trigger knee, are described. After excision of the nodules all symptoms completely disappeared.

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