**5.1 Letournel and Judet classification**

The classification of acetabular fractures that is most widely used is that of Letournel and Judet. This system divides fracture of acetabulum into five simple (elementary) and five complex (associated) patterns. The elementary fracture patterns were defined as those that separated all or parts of a single column of the acetabulum. The associated patterns are either a combination of elementary patterns with an additional fracture line (**Figures 11** and **12**).

Elementary/simple fractures


#### **Figure 11.**

*Simple/elementary fractures: (A) posterior wall fracture, (B) posterior column fracture, (C) anterior wall fracture, (D) anterior column fracture, (E) transverse fracture.*

#### **Figure 12.**

*Associated fractures: (F) Posterior column and posterior wall fracture, (G) Transverse and posterior wall fracture, (H) T-shaped fracture, (I) Anterior column and posterior hemitransverse fracture (J) Complete both column fracture.*

• Transverse

Associated fractures

