Pre- and postfracture patient-reported outcomes for patients undergoing periprosthetic femoral fractures after primary total hip arthroplasty—An observational study

Objective Periprosthetic femoral fracture has become the most common reason for reoperation after total hip arthroplasty (THA). The aim of this study was to evaluate patient-reported outcomes (PROMs) after undergoing surgery due to a periprosthetic femoral fracture. Methods Patients registered with a periprosthetic femoral fracture in the surgical theater protocols and in advance included in an institutional quality register were included in the study. PROMs were compared for each patient before primary THA, at 3 and 12 months follow-up and at the endpoint after fracture surgery. The PROMs investigated were numeric rating scale pain, Harris Hip Score (HHS), Hip disability and Osteoarthritis Outcome Score—Physical Function Short-form (HOOS-PS) and Forgotten Joint Score. Results A total of 27 patients were included in the study. Pain level after periprosthetic fracture surgery were comparable to the pain level registered at 3 and 12 months after THA. The same were found for HHS and HOOS-PS. In addition, both pain scores, HHS and HOOS-PS were significantly improved after fracture surgery compared to before the primary THA. Conclusions Pain and function scores after periprosthetic surgery were comparable to the findings at 3 and 12 months follow-up after primary THA surgery. Despite a limited number of patients, the present study report unique results including PROMs both pre- and post-THA and after the periprosthetic femoral fracture.