GPT and diabetes mellitus: There were significant differences between the SSI and non-SSI groups in terms of age (p = 0.040), diabetes mellitus (p < 0.001), preoperative stay (p < 0.001), intraoperative bleeding (p = 0.006), anesthesia type (p < 0.001), type of bone graft (p = 0.002), albumin (p < 0.001), A/G (p < 0.001), ALT (p = 0.019), AST (p = 0.011), ALP (p = 0.020), GLOB (p = 0.002), FBG (p = 0.042), WBC (p < 0.001), NEUT (p < 0.001), RBC (p < 0.001), HGB (p < 0.001), MCHC (p < 0.001), PLT (p < 0.001), and PDW (p < 0.034).