Gouty Tenosynovitis of the Distal Biceps Tendon Insertion Complicated by Partial Rupture

Background: Given the appreciable prevalence of gout, gout-induced tendon ruptures in the upper extremity are extremely rare. Although these events have been reported only 5 times in the literature, all in patients with a risk factor for or history of gout, they have conspicuously never been diagnosed in the shoulder or elbow. Methods: A 45-year-old, right-hand-dominant man with a history of gout presented with pain in his right anterior elbow and weakness in his forearm after a trivial injury. Results: Here, we report the first case of gouty tenosynovitis of the distal biceps tendon insertion complicated by partial rupture, a composite diagnosis supported by both intraoperative and histological observations. Conclusions: In patients who are clinically diagnosed with biceps tendon rupture and have a history of gout, it is important to consider the possibility of a gout-related pathological manifestation causing or simulating tendon rupture.