Neck of Femur Fractures in the First Eight Months of the COVID-19 Pandemic: A UK Systematic Review and Meta-Analysis

Neck of femur (NOF) fracture patients have significant 30-day mortality. The incidence of NOF fractures remained high during the coronavirus disease 2019 (COVID-19) pandemic in the United Kingdom. Consequently, numerous cases were complicated with concurrent severe acute respiratory syndrome coronavirus 2 infection. We performed a systematic review and meta-analysis of all studies from the United Kingdom related to NOF fractures and 30-day mortality outcomes during the pandemic. A systematic review and meta-analysis was performed and reported as per the Preferred Reporting Items for Systematic reviews and Meta-Analyses guidelines. Two reviewers independently searched on Medline for studies that were published between the 1st of March 2020 and the 1st of November 2020 in the United Kingdom. The following outcomes were compared: 30-day mortality, time to surgery, and anaesthetic risk. A total of five articles were included in this review. In total, 286 patients with NOF fractures and COVID-19 infection were identified, with 30-day mortality ranging from 30.5% to 50% (odds ratio = 6.02; 95% confidence interval = 4.10-8.85; χ(2) = 4.82; I(2) = 58%). Increased time to surgery due to COVID-19-related delays was also noted for the majority of patients in some studies. Mortality scores (Charlson Comorbidity Index, Nottingham Hip Fracture Score) failed to accurately predict the mortality risk. Concurrent infection of COVID-19 in patients with NOF fractures increases the 30-day mortality sixfold compared to the COVID-19-negative group. Efforts should be made to optimise time to surgery as well as consideration of postoperative care in higher dependency units. Future updates in mortality predicting scores should include COVID-19 infection as a significant factor.