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- Hiroyuki Aono, Shota Takenaka, Yukitaka Nagamoto, Hidekazu Tobimatsu, Tomoya Yamashita, Masayuki Furuya, Hiroyuki Ishiguro, and Motoki Iwasaki.
- Department of Orthopedic Surgery, Osaka Global Orthopedic Hospital, 6-15-30 Sekime, Joto-ku, Osaka city, Osaka 5360008, Japan. Electronic address: h-aono@umin.ac.jp.
- World Neurosurg. 2025 Jan 22: 123681123681.
BackgroundsPostoperative inflammatory parameters are important markers of surgical site infection. Some authors have reported that spine surgery with instrumentation elevates CRP levels more than that without instrumentation does. However, those studies compared early postoperative inflammatory markers with or without instrumentation in different patients, although CRP levels vary widely among patients. Therefore, we investigated the impact of early postoperative inflammatory reaction with or without instrumentation in the same patients.MethodsData were examined for 72 patients who had undergone lumbar surgery twice, once with instrumentation and once without instrumentation. CRP level, white blood cell (WBC) count, and neutrophil count (NC) were measured before surgery and at 1, 3, 7, and 14 days after surgery. All surgery with instrumentation were PLIF and all without instrumentation were laminotomy.ResultsComparison of peak CRP between procedures with instrumentation and those without instrumentation showed a consistent peak on day 3 for all patients across both types of surgical procedures. After PLIF, there was a significantly elevated CRP, WBC, and NC in comparison to these for laminotomy. There were significant interactions between time and PLIF in relation to CRP, WBC, and NC levels. There were significant interactions between time and number of levels (N-level) in relation to CRP and NC. Age, gender, blood loss, and duration of surgery did not influence the observed elevations of all markers.ConclusionsEarly postoperative trends were significantly higher after PLIF than after laminotomy for all three indices, with a significant interaction between time and N-level for CRP and NC.Copyright © 2025. Published by Elsevier Inc.
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