Madelung's deformity masquerading as a bone tumour.

Madelung's deformity has classical clinical and radiological appearances; it is well recognised by both radiologists and orthopaedic surgeons. In this paper we report on two Madelung's deformities demonstrated on wrist radiographs that were misinterpreted as bone tumours, the patients having presented with unrelated trauma. Two further cases demonstrating similar features are illustrated. The radiological diagnosis of Madelung's deformity and its differential diagnosis is discussed.