greater trochanter
The greater trochanter (great trochanter) of the femur is a large, irregular, quadrilateral eminence and a part of the skeletal system. It is directed a little lateralward and backward, and, in the adult, is about 1 cm lower than the head. Because the pelvic outlet in the female is larger than in the male, there is a greater distance between the greater trochanters in the female. It has two surfaces and four borders. [WP,unvetted].