• Quan You Yeo and KwekErnest Beng KeeEBKDepartment of Orthopaedic Surgery, Woodlands Health Campus, Singapore, Singapore..
• Department of Orthopaedic Surgery, Tan Tock Seng Hospital Singapore, 11 Jalan Tan Tock Seng, Singapore, 308433, Singapore. yeoquanyou@gmail.com.
• Arch Orthop Trauma Surg. 2021 Jul 1; 141 (7): 1183-1187.

IntroductionThe recent focus on early surgery for hip fractures to reduce complications and improve morbidity, has led some resource-constrained institutions to perform after hours surgery in a bid to meet these timelines. However, there are concerns about the potential increase in complications and poorer outcomes in after hours surgery. This study aims to evaluate the safety of after hours hip fracture surgery and its related complications.Materials And MethodsThis is a retrospective review of hip fracture patients admitted over a 2-year period to a tertiary centre with an established orthogeriatric co-managed hip fracture care pathway. Patients were divided into two groups based on their operating start time: (1) office hours surgery was defined as surgery conducted between 8 am to 5 pm on weekdays and 8 am to 12 noon on Saturdays; and (2) after hours surgery was defined as surgery conducted between 5 pm to 8 am on weekdays, and between Saturday 12 noon to Monday 8 am, as well as those that were conducted on public holidays. Demographic data, comorbidities, fracture details, operative details and outcome measures (complications, mortality and functional scores) were collated.ResultsA total of 903 patients were surgically treated for per- and intertrochanteric or femoral neck fractures. 76.7% (n = 693) of the patients underwent operation during office hours while 23.3% (n = 210) of the patients underwent after hours operation. 12.4% (n = 26) of the after hours group underwent surgery within 24 h of admission, compared with 6.8% (n = 47) in the office hours group (p = 0.009). We did not find any significant difference between the two groups in terms of complications, mortality and functional outcomes (p > 0.05).ConclusionIn conclusion, our study did not show that after hours surgery increases complication rates in hip fracture surgery and had equivalent functional outcomes.

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