Rationale: Dysplasia epiphysealis hemimelica (DEH), also known as Trevor disease, is a rare, developmental bone disorder of childhood.
Patient concerns: A 9-year-old girl was admitted due to pain in front of the medial malleolus of her right foot after a long walk or distance movement, in which the pain could be relieved after rest, while it was repeated and lasted for several months.
Diagnosis: Dysplasia epiphysealis hemimelica INTERVENTIONS:: The patient underwent an open resection surgery. After operation, the pain was totally relieved. Postoperative pathological diagnosis showed DEH.
Outcomes: At the 6-month follow-up, pain and claudication symptoms fully disappeared, and range of motion of the right foot returned to normal level.
Conclusions: Dysplasia epiphysealis hemimelica is an uncommon disease which can cause pain of foot in children.
Lessons: When the pediatric orthopedic surgeon treated the children suffered with foot pain should be aware of this rare disease, especially accessory scaphoid bone was found in another foot.