Surgical site infection (SSI) refers to nosocomial infections that occur in surgical incisions, deep organs or cavities after surgical operations, and is still one of the severe complications after modern orthopedic surgery. Despite good medical measures and surgical management, SSIs of orthopedic patients interfere with the functional recovery of motor system, prolong the length of hospital stay, increase the patient's financial burden, and seriously affect the quality of medical care and the patient safety. The widespread application of implants in orthopedic surgeries has increased the risk of invasive factors, making orthopedic patients at high risk of nosocomial infection.ObjectiveTo investigate the incidence of patients with SSIs in the department of traumatic orthopedics and traumatology in our hospital, and analyze the causes of the infection to provide evidence for the prevention and control of SSI.

From January 2015 to December 2019, a total of 10 645 patients in the department of orthopedics and traumatology in our hospital were selected as the research subjects. Nosocomial infection cases were diagnosed according to the Nosocomial infection diagnostic criteria (trial) issued by the Ministry of Health in 2001. and the medical records were screened and retrospectively analyzed according to the information of nosocomial infection reported by our department.

Among 10 645 patients with orthopedic surgeries, 31 patients were diagnosed as SSIs, and the SSI rate was 0.29%. From 2016 to 2019, the incidence of SSI showed a downward trend year by year. The main pathogenic infection was Gram-positive cocci, accounting for 87.50%. The major type of SSI was organ (or cavity) infection, accounting for 61.29%. Patient age, body mass index (BMI) , operation time, operation method and operation site were correlated with the occurrence of SSI in orthopedic patients (P<0.05) .

SSI is an unavoidable problem in patients with orthopedic surgery. We should pay attention to the relevant risk factors and actively take targeted preventive and control measures to improve modifiable factors in order to effectively reduce the incidence of SSI in orthopedic patients.