A, Long guide rod placed posteriorly over femoral neck to orient jig in valgus position. B, Guide pin viewed from medial side of neck. C, Guidewire inserted in desired position using alternative McMinn guide. D, Circumferential measurement taken to make sure head size will not notch femoral neck. E and F, Reaming of femoral head. G-I, Head is reamed to line after measuring how far femoral head needs to be reamed. J, Femoral head shaped to match geometry of femoral head component. SEE TECHNIQUE 4.1.