Acetal fractures are joint fractures that occur in the hip. These fractures affect the functional prognosis of the hip in the short, medium and long term. In the acetabulum fractures operated on, there is a radiological score in the literature allowing the prognosis to be predicted depending on the quality of the postoperative reduction. This score is based on the quality of postoperative reduction assessed on pelvic radios. In addition, the thresholds for poor / good results were determined empirically.

Inclusion Criteria:

• Patient whose age is ≥ 18 years
• Patient operated on for an acetabular fracture at the GHPSJ between January 2004 and December 2014
• Patient with a minimum postoperative follow-up of 2 years
• French-speaking patient

Exclusion Criteria:

• Patient treated conservatively.
• Patient under guardianship or curatorship
• Patient deprived of liberty
• Patient under legal protection
• Patient objecting to the use of his medical data as part of this study

The patients were operated on for an acetabulum fracture within the Paris Saint Joseph Hospital Group, between January 2004 and December 2014, with a minimum post-operative follow-up of 2 years.