Salter-Harris classification of epiphyseal disk (growth plate) fractures
Disruption of future bone growth is common with types III, IV, and V but uncommon with types I and II.
Growth plate fractures are suspected in children with tenderness localized over the growth plate.
These fractures cause circumferential tenderness and thus can be clinically differentiated from contusions. In fracture types I and V, x-rays may appear normal. If so, these fractures can sometimes be differentiated from each other by injury mechanism—eg, distraction (separation in longitudinal axis) vs compression.