BackgroundThe increase in orthopedic injuries after earthquakes imposes a significant burden on the health system. However, the impact of earthquakes on outpatient admissions remains unclear. This study compared patient admissions to the orthopedics and traumatology outpatient clinics before and after earthquakes.MethodsThe study was conducted at a tertiary university hospital near the earthquake zone. In total, 8549 outpatient admissions were retrospectively analyzed. The study population was divided into pre-earthquake (pre-EQ) and post-earthquake (post-EQ) groups. Factors such as gender, age, city of origin, and diagnosis were compared between the groups. In addition, unnecessary outpatient utilization (UOU) was defined and analyzed.ResultsThe pre-EQ and post-EQ groups included 4318 and 4231 patients, respectively. The two groups had no significant differences in age and sex distribution. However, the proportion of non-local patients increased after the earthquake (9.6% vs. 24.4%,p< 0.001). UOU was the most common reason for admission in both groups. The distribution of diagnoses differed significantly between the pre-EQ and post-EQ groups, with an increase in the number of trauma-related diagnoses (15.2% vs. 27.3%,p< 0.001) and a decrease in UOU (42.2% vs. 31.1%,p< 0.001) after the earthquake.ConclusionsPatient admission patterns at orthopedics and traumatology outpatient clinics changed significantly after the earthquake. The number of non-local patients and trauma-related diagnoses increased, whereas the number of unnecessary outpatients decreased.Level of evidenceObservational study.