Table 1 Quality of fracture reduction

1. Alignment [17]:

 a. Anteroposterior view: normal or slightly valgus neck–shaft angle

 b. Lateral view: less than 20° of angulation

2. Displacement of main fragments [14]:

 a. Anteroposterior view: displacement less than the medial cortical thickness

 b. Lateral view: displacement less than the anterior cortical thickness

Good, both criteria of alignment and both criteria of displacement

Acceptable, both criteria of alignment and only one criterion of displacement

Poor, only one or neither criterion of alignment or neither criterion of displacement