Surgical Treatment of Periprosthetic Acetabular Fracture: A 5 Cases Report and Literature Review.

Abstract Background: With the increasing number of patients undergoing total hip arthroplasty(THA) in recent years, the incidence of periprosthetic acetabular fractures is increasing, which is one of the most serious complications after THA. Periprosthetic acetabular fracture caused by trauma is rare, and it requires orthopedic surgeons to deal with acetabular fracture and component loosening at the same time. This article summarizes 5 cases of periprosthetic acetabular fracture that have undergone surgical treatment, we propose the reverse press-fit technology to increase the stability of fixation for this clinical rare diseases. And the literature for treatment recommendations is reviewed.Case presentation: A total of 5 patients (3 female) were included, the average patient age at the time of injury was 66.2 years (range 54–78 years). All patients received surgical treatment, 4 cases were treated with open reduction and internal fixation(ORIF), 1 case was treated with revision surgery. There were no postoperative complications. All patients could walk independently on the latest follow-up.Conclusions: The surgical treatment option of periprosthetic acetabular fracture is ORIF or revision surgery, and the purpose is to make the component stabilized. The reverse press-fit technology could improve the fixation strength between the component and bone, and it can be performed in appropriate situation.