The Zickel classification (modified from Fielding) of subtrochanteric fractures takes into account the extent and obliquity with the fracture line and also the presence or absence of comminution. Almost certainly, the most full classification is the AO classification which combines the fracture stage, diploma of displacement, and fracture line angle. https://www.theorthopaedicandpainpractice.com/proximal-femur-fractures-neck-of-femur-and-intertrochanteric/