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. 2002 Jul;95(7):356–358. doi: 10.1258/jrsm.95.7.356

Figure 1.

Figure 1

Measurement of the extent of epiphyseal displacement on the lateral radiograph. The degree of slip is reflected by the angle between the perpendicular of a line drawn along the long axis of the femoral neck and a line produced from the anterior to the posterior border of the epiphysis