humeroradial synostosis

A synostosis that is characterized by uni- or bilateral fusion of the humerus and radius bones at the elbow level, with or without associated ulnar and carpal/metacarpal deficiency, leading to loss of elbow motion and, in many cases, functional arm incapacity.

Signs and symptoms

• Small earlobe
• Wide nasal bridge
• Renal insufficiency
• Prominent forehead
• Microtia
• Brachycephaly