FIGURE 1.

Retrograde transphyseal guided growth in a distal femur. A, Anteroposterior view, the screw entered from the epiphysis and directed toward the metaphysis with a 60-degree inclination to the physeal line at the junctional point between the medial one-third and central two-third of the medial femoral condyle, with a ratio of 2:8 of the screw length in epiphyseal and metaphyseal areas, respectively. B, Lateral view, the screw position in the central point of the physis.