Klassifikation Apophysenfraktur der Tibia nach Watson-Jones

Avulsion

fracture of the tibial tubercle in an adolescent. I: Upward displacement of tibial tubercle (TT). II: Fracture extension through the articular surface. III: Upward displacement of TT together with ossified part of tibial epiphysis. IV: Fracture through growth plate of proximal tibial epiphysis.