Retroperitoneal Kirschner wire migration after surgical treatment in a patient with cerebral palsy

Although Kirschner (K)-wire is among the most commonly used implants in orthopedic surgeries, the migration of this material is a very rare complication. In this article, we present the case of a K-wire migration four years after the surgery detected during the routine control of a 10-year-old male patient who underwent surgical treatment due to the diagnosis of developmental hip dys- plasia on the cerebral palsy. The aim of this study was to raise the awareness regarding this complication particularly for the pediatric orthopedic surgeons, and to recommend the removal of the K-wire as soon as bone union occurs.