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Purpose: Fractures around the hip are known to be an indicator for fragility and are associated with high mortality and various complications. A special type of fractures around the hip are periprosthetic femur fractures (PPF) after Total Hip Arthroplasty (THA). The aim of this study was to investigate the mortality rate associated with PPF after THA and to identify risk factors that may increase it. Methods: Consecutive patients (N = 158) who were treated for a PPF after THA in our university hospital between 2010 and 2020 were identified and mortality was assessed using the residential registry. Univariate (Kaplan-Meier-Estimator) and multivariate (Cox-Regression) statistical analysis was performed to identify risk factors influencing mortality. Results: One-year-mortality rate was 23.4% and 2-year mortality was 29.2%. Mortality was significantly influenced by age, gender, treatment, type of comorbidity and time of surgery (p < 0.05). Surgical treatment during regular working hours (8 to 18 h) reduced mortality by 53.2% compared to surgery on call (OR: 0.468, 95% CI 0.223, 0.986; p = 0.046). For every year of age, mortality risk increased by 12.9% (OR: 1,129, 95% CI 1.078, 1.182; p < 0.001). The type of fracture according to the Vancouver classification had no influence on mortality (p = 0.179). Plate fixation and conservative treatment were associated with a higher mortality compared to revision arthroplasty (plate: OR 2.8, 95% CI 1.318, 5.998; p = 0.007; conservative: OR 2.5, 95% CI 1.421, 4.507; p = 0.002). Conclusion: Surgical treatment during regular working hours is associated with lower mortality compared to surgery outside these hours. In this retrospective cohort, time to surgery showed no significant impact on all-cause mortality, and revision arthroplasty was associated with lower mortality than conservative treatment or plate fixation. Level of evidence: IV (Retrospective cohort study). [ABSTRACT FROM AUTHOR]

Abstract: Introduction: A prevailing perception regarding night time surgery is that the probability of complications may be higher due to decreased availability of support staff, surgeon fatigue and other logistical factors. However there is little data supporting this notion in hip fracture surgery and we studied this in the context of Inter-trochanteric fractures fixed with dynamic hip screws (DHS). Methods: All patients who underwent DHS fixation for inter-trochanteric fracture from January 2005 to December 2010 were included. Patients were divided into two groups. An after-hours group was defined as an operation done between 5:00 P.M. to7:00 A.M. and a daytime group was defined as surgery done between 7:00 A.M. to 5:00 P.M. Data was analyzed using SPSS version 19. Results: During this period 194 patients underwent DHS fixation. One hundred and fourteen patients were included in the daytime group and 80 patients in the after-hours group. There was no difference in the rates of wound infection, length of hospital stay, postoperative ambulation status, intra op blood loss, type of anesthesia, and mortality between the two groups. Tip apex index was found to be similar between the two groups. Two patients in the daytime surgery required revision surgery compared to 5 patients in the after-hours group, however this difference was not statistically significant. Discussion: Outcomes in terms of adequacy of fixation, post-operative complications and post-operative 30-day mortality are comparable to routine day time surgery while offering the benefits of early fixation and mobilization to the patient. This also has a positive impact on the financial burden on this population as early fixation translates into decreased length of stay and reduced cost of treatment. [Copyright &y& Elsevier]