Osteoid Osteoma of the Trapezium in A Forty-Five-Year-Old Man

introduction: osteoid osteoma (oo) is uncommon in the carpal bones and extremely rare in the trapezium. we report the third case of oo of the trapezium.case presentation: patient was a 45- year -old man with chronic left wrist pain for 19 months. pain was intense at night and responsive to nonsteroidal anti-inflammatory drugs. there was a local tenderness on the trapezium. the wrist x-ray images revealed normal findings, but bone scan, computed tomographic scan, and magnetic resonance imaging indicated oo as the possible diagnosis. the patient was treated by curettage and bone graft of the trapezium. histopathologic examination confirmed the diagnosis of oo.discussion: oo of the trapezium should be included in differential diagnosis list in patients with chronic wrist pain