Academy of Medical Sciences of I.R. Iran Archives of Iranian Medicine 1029-2977 15 12 2012 12 01 Osteoid Osteoma of the Trapezoid Bone 0 0 EN Dawood Jafari Farid Najd Mazhar Journal Article Osteoid osteoma is a benign, bone-forming tumor that rarely involves the carpal bones. We report a case of osteoid osteoma of the trapezoid carpal bone with extension to the adjacent second metacarpal bone. Chronic wrist pain and local tenderness were the major clinical signs and symptoms. In chronic wrist pain osteoid osteoma and the possibility of extension to the adjacent bones should be considered.