“…Because, the close adaptation of the prosthesis to the bone is essential to achieving optimal mechanical stability and fixation for THA (Casper et al, 2012;Ganz et al, 2010;Umer et al, 2010;Yang et al, 2014) The morphometric method to understand the shape and size of the proximal femur regarding femoral stem design was firstly described in detail by Noble et al (1988) in human femur. In this method, to understand the proximal femoral morphology with relevance for THA, the position of the femoral head and the geometrical variations in the medullary canal should be evaluated in particular (Franklin et al, 2012;Husmann et al, 1997;Noble et al, 1988;Noble et al, 2003;Palierne et al, 2008;Tawada et al, 2015;Yang et al, 2014). The position of femoral head or neck of the dog has already been studied in detail (Dudley et al, 2006;Franklin et al, 2012;Kuo et al, 1998;Madsen and Svalostaga, 1994;Palierne et al, 2006;Palierne et al, 2008;Rumph and Hathcock, 1990;Sarierler, 2004;Tomlinson et al, 2007;Wigger et al, 2008).…”