• Paul Simon, Philipp von Roth, and Carsten Perka.
• Center for Musculoskeletal Surgery, Department of Orthopedic Surgery, Charité- Universitätsmedizin Berlin, Berlin, Germany. paul.simon@charite.de.
• Int Orthop. 2015 Oct 1; 39 (10): 1995-2003.

AbstractPeriprosthetic fractures of the acetabulum represent a rare incident in primary and revision total hip arthroplasty. The management of these fractures can be challenging. At present, there are no reliable guidelines for the treatment of periprosthetic acetabular fractures. Periprosthetic acetabular fractures can occur intra-operatively, in particular during insertion of non-cemented cups or in the context of revision surgery. Post-operative causes for periprosthetic acetabular fractures are traumatic events or, more commonly, pelvic discontinuity due to severe bone loss related to osteolysis. Despite their aetiology, the main objective of surgery is to achieve a stable acetabular component and fracture. While stable fractures and implants could be treated non-operatively, unstable fractures require surgery to achieve component stability and allow appropriate biological fixation of the revision cup. Assessment of the stability plays a crucial role before determining the treatment strategy. There is a large variety of surgical techniques available for the management of these fractures. This review article outlines the epidemiology, aetiology and current classification systems, and provides a distinct diagnostic and therapeutic algorithm for the treatment of periprosthetic acetabular fractures.

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