A 14.5-year-old girl was referred to our department by her pediatrician due to persistent pain in her fourth right toe for over 3 mo. Persistent pain in the fourth right toe for over 3 mo. There was no past illness for this patient. There was a history of trivial trauma but no suggestion of broken skin or fever. At admission, the patient was apyrexial; on examination, the toe showed mild swelling and erythema, and palpation caused discomfort. The girl could freely bear weight on her foot with no limitations. The patient’s white blood cell count was 7600 cells/mm3, C-reactive protein was less than 0.3 mg/L, and her erythrocyte sedimentation rate was 7 mm/h. An initial plain radiograph revealed a constitutional fusion of the toe’s distal interphalangeal joint but without any relevant pathology.