Abstract

ABSTRACT Objective. To explore the application value of combined detection of serum interleukin-6 (IL-6), stromal cell-derived factor-1 (SDF-1) and neutrophils CD64 (CD64) in the diagnosis of early postoperative infection after limb fractures. Methods. 419 patients with limb fractures un erwent surgical treatment in our hospital were selected as study subjects, and they were divided into infection group (n = 104) and non-infection group (n = 315) according to postoperative pathological results of puncture to detect the levels of serum IL-6, SDF-1 and CD64 in the two groups on the 1st, 3rd, 5th and 7th day after surgery, and to analyze the clinical diagnostic efficacy of single and combined detection of the three indexes in early postoperative infection after limb fractures by ROC curve. Results. The levels of serum IL-6, SDF-1 and CD64 in infection group were overtly higher than those in non-infection group at different time after surgery (P < 0.05), and the AUC value, specificity and sensitivity of combined detection were higher than those of single diagnosis. In this study, 14 patients in infection group underwent reoperation, 22 patients received conservative treatment in the later period, 6 patients had postoperative muscular dystrophy, and the remaining patients had a good prognosis. Conclusion. Serum IL-6, SDF-1 and CD64 are closely related to the occurrence of early postoperative infection after limb fractures, and their combination is helpful to improve diagnostic accuracy of early postoperative infection and provide effective reference value for the treatment of postoperative infection in orthopedics.

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