Subperiosteal hemorrhage due to a distal femoral physeal fracture in a neonate.

Femoral physeal fractures have been rarely reported as a birth-related injury. As the plain radiograph findings are variable, the diagnosis may be challenging. In this case report, we describe a male neonate presenting with periosteal elevation at the left distal femur. A radiological evaluation demonstrated posteromedial displacement of the distal femoral epiphysis. The final diagnosis was subperiosteal hemorrhage due to a distal femoral physeal fracture.