Principles of Valgus Intertrochanteric Osteotomy (VITO) after Femoral Neck Nonunion

Figure 1

Pauwels classification of fracture line obliquity. (a) Grade I, <30 degrees, (b) Grade II, 30 – 50 degrees, and (c) grade III, >50 degrees.

(a)

(b)

(c)