INTRA-ARTICULAR RHEUMATOID NODULES OF THE KNEE

Abstract
1. Eight patients with rheumatoid arthritis had an intra-articular nodule in one or both knees causing mechanical symptoms. 2. The nodule was on the lateral side of the knee and interfered with walking. It caused a click and painful instability of the knee at about 15 degrees of flexion. 3. Surgical excision of the nodule, which was attached to the synovial membrane, abolished the symptoms.

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