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A Rare Intra-articular Abnormality in the Posterior Radiocapitellar Joint: A Case Report
Marie Uchino1, Taku Suzuki1, Hiroo Kimura1
1Department of Orthopaedic Surgery, Keio University School of Medicine, Shinjuku, Tokyo 160-8582, Japan.
Introduction:
Posterior radiocapitellar synovial plica excision is sometimes performed for lateral epicondylitis after debridement of the extensor carpi radialis brevis (ECRB) tendon. We describe a rare intra-articular abnormality of the posterior radiocapitellar joint diagnosed on posterior arthroscopic observation.
Case Report:
A 48-year-old man presented with posterolateral pain and discomfort in his left elbow. A diagnosis of lateral epicondylitis was made, and arthroscopic debridement of the ECRB tendon was performed. Posterior arthroscopic examination revealed a tendon-like abnormality running longitudinally along the articular surface of the capitulum of the humerus. The abnormality was resected using a shaver, and symptoms improved postoperatively.
Conclusion:
In patients with posterolateral pain and discomfort or catching of the elbow, posterior arthroscopic confirmation of the intra-articular structure is recommended after debridement of the ECRB tendon.
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