Malunion or irregular union from the fracture segments, particularly in comminuted fractures, can be as a consequence of rotational mistakes and could result in hip pain and gait abnormalities. It may be managed by corrective osteotomy (generating cuts in the bone To alleviate the symptoms and facilitate regular alignment). - https://www.theorthopaedicandpainpractice.com/subtrochanteric-fractures-what-is-it-2/