Objectives: To examine if there is a difference in length of treatment of polytraumatised patients at the emergency department of University hospital centre Osijek before and during COVID-19 pandemic Study design: Cross-sectional study with historical data Participants and methods: Participants are polytraumatised patients who were admitted to the emergency department of University hospital centre Osijek from March 1st 2019 do the March 1st 2021. Patients were included in the study if they had a CT scan during their stay at the emergency department and were transferred to the intensive care unit after treatment and emergency operations. Results: Demographical data, data about nature of trauma and treatment procedures indicate that the groups before and during COVID-19 pandemic are highly similar and most of this data coincide with previous studies about this topic. Decrease in number of patients without comorbidities is only statistical difference found between groups before and during COVID-19 pandemic. It is possible that this difference is due to epidemiological measures in Croatia. Length of care in emergency department was not found to be different between set groups, although there are indications of clinically significant differences. Time to operation has clinically decreased by 26 minutes and length of operation has decreased by 58 minutes. Total length of care for polytraumatised patients increased. This increase could point out to loss of time in an unspecified part of algorithm during COVID-19 pandemic. Length of care from admittance to the emergency department to the CT wasn’t in the internationally recommended time interval of 60 minutes but it wasn’t substantially different than a lot of hospitals around the world. There is a need for similar study with lager number of patients.Conclusion: No statistically significant difference was found in length of treatment of polytraumatised patients before and during COVID-19 pandemic.