The aim of this work is to describe the radiographic findings of isolated trapezoid fractures and determine the utility of these findings in guiding treatment. A second aim is to heighten awareness of an uncommon sports-related injury that is often radiographically occult because of the lack of primary or overt secondary radiographic findings. A retrospective review of radiology reports at our institution from 2007 to 2010 was performed to identify isolated trapezoid fractures. Two musculoskeletal radiologists and one orthopedic hand surgeon reviewed the patient presentations, images, treatments, and outcomes of the patients' injuries. This project had institutional review board approval. We describe three patients who presented with isolated sports-related trapezoid fractures. Each patient was successfully treated with activity modification, cast immobilization, and/or surgery based on their specific radiographic findings. Isolated sports-related trapezoid fractures are rare injuries. Only one prior case report in the English literature exists. Treatment success in patients with trapezoid fractures depends upon the degree of activity modification, splint protection, and especially fragment displacement. We report the largest series to date of isolated trapezoid fractures, all of which resulted from sports participation, and we analyze the success of diagnostic and treatment interventions.