“…This is the only way to expect good joint function, being the only mode to establish the physiological distance between the ends of the muscular initiators of hip motion, thus enabling their full strength. However, there is no full agreement as to the preparation and positioning of the proximal femur at the required level of the primary acetabulum (Carrlson et al, 2003;Crowe et al, 1979;Dunn & Hess, 1976;Eskelinen et al, 2006;Hartofilakidis et al, 1996Hartofilakidis et al, , 1998Hartofilakidis et al, , 2004Holinka et al, 2010;Lai et al, 1996Lai et al, , 2005Paavilainen et al, 1990). Many surgical techniques have been described by authors discussing the type and modes of femoral abbreviation osteotomies.…”