The Zickel classification (modified from Fielding) of subtrochanteric fractures normally takes into consideration the extent and obliquity from the fracture line along with the existence or absence of comminution. Possibly, essentially the most complete classification would be the AO classification which combines the fracture stage, degree of displacement, and fracture https://www.theorthopaedicandpainpractice.com/proximal-femur-fractures-neck-of-femur-and-intertrochanteric/