The Zickel classification (modified from Fielding) of subtrochanteric fractures usually takes into account the level and obliquity with the fracture line along with the existence or absence of comminution. Most likely, the most comprehensive classification would be the AO classification which mixes the fracture level, diploma of displacement, and fracture https://proximal-femur-fracture80112.blogolize.com/proximal-femur-fracture-an-overview-73544177