Abstract: Objective: To systematically evaluate the risk factors for intraoperative pressure injury in patients undergoing posterior spinal surgery, and to provide a theoretical basis for clinical prevention. Methods: Chinese and English databases were searched from the establishment of the databases to December 31, 2022 to collect literature on risk factors of intraoperative pressure injury in patients undergoing posterior spinal surgery. After literature screening, data extraction and quality evaluation, Meta-analysis was performed using RevMan 5.4. Results: A total of 10 articles were included, with 6402 patients. The results showed that the incidence of intraoperative pressure injury in patients undergoing posterior spinal surgery was 13%. BMI≥28 kg/m2 [OR=1.91, 95%CI (1.06-3.41)], diabetes [OR=2.48, 95%CI (1.56-3.95)], duration of anesthesia≥4 h [OR=13.60, 95%CI (6.30-29.34)], operation time≥4 h [OR=2.96, 95%CI (1.97-4.45)] were risk factors for intraoperative pressure injury in patients undergoing posterior spinal surgery. Conclusion: The incidence of intraoperative pressure injury in patients undergoing posterior spinal surgery is high, but the research on its risk factors is still limited. Comprehensive investigations of risk factors with high quality and multiple aspects are needed to provide intervention targets for future preventive measures, correct variable influencing factors, and coordinate doctors, nurses and anesthesiologists, in order to reduce the occurrence of intraoperative pressure injury.

Key words: spinal surgery; pressure injury; incidence; risk factor; Meta-analysis