Evaluating the Functional and Psychological Outcomes Following Periprosthetic Femoral Fracture After Total Hip Arthroplasty

BACKGROUND: A fall after total hip arthroplasty (THA) that results in a periprosthetic femoral fracture (PPF) can have devastating functional and psychological consequences in older adults. There are few studies that have evaluated both functional and psychological outcomes of PPF post-THA in the same cohort. METHODS: This is a retrospective study of 130 people who underwent revision THA between 2005 and 2019 due to PPF. The Western Ontario and McMaster Universities Osteoarthritis (WOMAC), Harris Hip Score (HHS), and Short Form-12 (SF-12) assessed physical function, hip joint function, and psychological well-being, respectively. Descriptive statistics using means and standard deviation or frequencies and percentages were used to define the sample. The association between baseline demographic, clinical, and surgical factors on WOMAC, HHS, and SF-12 scores at 1-year post-PPF surgery was modelled using multivariable linear regression. The mean age (n = 130) was 80.6 ± 9.0 years, and 55.4% (n = 72) were female. The mortality rate was 15.4% (n = 20) at 1-year post-PPF surgery. One-year follow-up data were available for 35.4% (n = 46) of patients. RESULTS: The WOMAC (n = 37), HHS (n = 32), and SF-12 mental component summary (n = 46) scores at 1-year post-PPF surgery were 67.9 ± 20.3, 78.3 ± 15.0, and 52.7 ± 9.1, respectively. No significant association was found among age, gender, previous history of lower extremity surgery, Vancouver classification, and femoral bone grafting on WOMAC, HHS, and SF-12 scores. CONCLUSIONS: Our study found that patients with PPF have fair hip joint function, poor physical function and psychological well-being, and a high mortality rate at 1-year post-PPF surgery.