Periacetabular fracture

Periacetabular fractures are often difficult to treat. They can happen intraoperatively in hip prosthetic replacement during the cup insertion (more often in press-fit cups), excessive acetabular reaming or they can occur after time and in stable cups due to adequate trauma.

For the correct treatment we have to know

• amount of bone loss?
• Column defects ? and which:
  • anterior 
  • posterior
  • central (lateral border)
  • pelvic discontinuity (all three columns)
• previous surgery approach

To guarantee a sufficient stability of the acetabular cup, we need 2 intact or stable columns; mainly the posterior column

Classification of periacetabular (cup) fracture

1. Paproski
2. Davidsson