“…Significant femoral changes are short femoral neck, small femoral head, increased femoral neck angle and anteversion, posterior transposition of great trochanter and femoral medullar narrowing in isthmus region [8]. To regain hip function, the center of hip rotation should be transferred medially, and abductor forces should be transferred laterally [2,5,[9][10][11]. It has been reported that when placing the acetabular cup, an uncovered space of up to 30-40% is acceptable [5].…”