and neck 124 are identical to head 50 and neck 52 described in connection with fig1 and 2 in fig3 adjustment mechanism 126 includes three spacers 130 132 and 134 preferably these spacers have different thicknesses these thicknesses for example can be selected from a group with one or two millimeter increments such as 1 mm 2 mm 3 mm 4 mm 5 mm 6 mm etc fig3 and 4 offer a multitude of different offsets between the femoral head and femoral stem these offsets depend on the number and thickness of spacers used further these spacers can be used alone i e one spacer placed inside the bore of the femoral head or used in conjunction with other spacers in the latter scenario two three four or more spacers can be stacked on top of each other and then placed in the bore of the femoral head this stacking arrangement can provide a wide range of offsets in small increments looking to fig4 to illustrate an example spacer 130 can have a thickness of 1 mm spacer 132 can have a thickness of 2 mm and spacer 134 can have a thickness of 4 mm these spacers could be used alone or in stacked.