Judet-Letournel acetabular fractures classification

Elementary: The five elementary patterns are the following:    

1. Posterior wall fracture
2. Posterior column fracture
3. Transverse fracture
4. Anterior column fracture
5. Anterior wall fracture

Associated: The five associated patterns are combinations of the simple patterns:   

1. Posterior column + posterior wall fractures
2. Transverse +  posterior wall fractures    
3. T-shaped  fracture
4. Anterior wall/column + posterior hemitransverse fracture   
5. Both-column fracture