Diagnosis, treatment and complications of radial head and neck fractures in the pediatric patient

Figure 2 Measurement of angulation and translation of the proximal radius fracture. A: Angulation measurement. Angulation of a proximal radius fracture is measured by drawing a line perpendicular to the surface of the radial head (blue line) and a line through the middle of the radial shaft (orange line). The angle is measured at the intersection of the two lines (white arc); B: Translation measurement. Translation of a proximal radius fracture is calculated by dividing the length the uncovered part of the metaphysis (orange line) by the total width of the proximal radius (blue line), multiplying by one hundred provides the percentage of translation. Alternatively, the distance from the middle of the proximal part to the middle of the distal part can be measured in millimeters (continuous white line).