In fracture of the neck of the femur, to determine upward displacement of the trochanter, lines are drawn on the body to form a triangle: line
a is drawn around the body at the level of the anterior superior iliac spines; line
b, perpendicular to line
a, is drawn to the greater trochanter of the femur; line
c is drawn from the trochanter to the iliac spine; upward displacement is measured along line
b.
Synonym(s):
iliofemoral triangle.