Fig. (2) The available neck types, each coupled with the plastic blue trial. In the first row, from left to right: the straight neck, the 8° angled neck for anteversion or retroversion (Ante/Retro 8°) and the similarly 15° angled neck (Ante/Retro 15°). In the second row, the 8° varus or valgus neck is shown first. The next two are actually the same neck version, designed separately for the right (ARVV1) and the left hip (ARVV2), so as to provide the combination of 4° varus and 6° anteversion in each side.