Een zuigeling met een bewegingsbeperking van de arm

A 14-week-old infant with an abnormal pronated position of the right arm was referred to the surgeon by the pediatrician. On physical examination, pro- and supination of the forearm was limited. Conventional radiography of the elbow showed a bony fusion of the proximal radius and ulna, a radioulnar synostosis.

Conflict of interest and financial support: none declared.