Abstract: Objective To explore the characteristics and postoperative outcomes of hip fractures. Methods Taking patients with hip fracture diagnosed and treated in a hospital in Harbin from January 1, 2017 to December 31, 2020 as the research objects, the basic information and clinical data of patients were collected, and a follow-up investigation was conducted for 1 year after discharge. Descriptive analysis method was used to analyze the characteristics of patients and the 1-year postoperative mortality, and univariate and multivariate analysis methods were used to analyze the influencing factors of postoperative 1-year mortality. Results A total of 2 342 patients with hip fractures were included in this study for analysis, including 485 （20.71%） in 2017, 582 （24.85%） in 2018, 628 （26.81%） in 2019, and 647 （27.63%） in 2020, the number of admitted cases was increasing year by year. The gender ratio of male to female was 1∶1.53; the age group was 33-90 years old, among which the age group of 70-79 years old accounted for the highest proportion （26.35%）; the main fracture type was femoral neck fracture （48.96%）, followed by femoral intertrochanteric fracture （45.99%）, the femoral head fracture accounted for the lowest proportion （5.04%）; the season with the largest incidence was winter （27.67%）. There were statistically significant differences in the distribution of patients with different ages, treatment methods, and adjuvant traditional Chinese medicine treatment within 4 years （P<0.05 or P<0.01）, but there were no significant differences in the distribution of patients with different genders, fracture types, medical complications, and seasons of onset within 4 years （all P>0.05）. A total of 2 331 patients with hip fracture were followed up for 1 year after discharge, and the 1-year mortality rate was 2.66% （62/2 331）. The results of multivariate analysis showed that age （OR=2.063）, non-surgical treatment （OR=1.730）, albumin level <35 g/L （OR=2.048）, and medical complications （OR=2.330） were the risk factors for 1-year death in patients with hip fracture after discharge. Conclusions Hip fractures are more common in women and people over 60 years old. Femoral neck fractures are a common type, and most of them occur in winter. The clinical outcomes of patients with different characteristics are significantly different.

Key words: Hip fracture, Epidemiology, Prognosis, Influencing factor