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What is Trevor disease and explain in detail?
Trevor disease, also known as dysplasia epiphysealis hemimelica and Trevors disease, is a congenital bone developmental disorder. There is 1 case per million population. The condition is three times more common in males than in females.

Presentation
This disorder is rare, and is characterised by an asymmetrical limb deformity due to localized overgrowth of cartilage, histologically resembling osteochondroma. It is believed to affect the limb bud in early fetal life. The condition occurs mostly in the ankle or knee region and it is always confined to a single limb