A case of dysplasia epiphysealis hemimelica of the ankle treated with excision and corrective medial malleolar osteotomy

Abstract

Dysplasia epiphysealis hemimelica, or Trevor disease, is a rare skeletal developmental disorder leading to overgrowth of the epiphysis, often involving the ankle or knee. We report the case of a 13-year-old boy with an osteochondral growth on the medial side of the talus treated by excision and an additive open wedge valgus osteotomy of the medial malleolus due to post-excision medial ankle instability. We report a positive outcome 1 year postoperatively. To the authors' knowledge, this case is the first report of a DEH lesion which received an additive open-wedge medial malleolar osteotomy following excision to restore joint stability.

Keywords

• Trevor
• pediatric
• osteotomy
• osteochondroma
• tumor