BACKGROUND Titanium plate (TP) and hydroxyapatite (HA) spacers are widely used during open-door laminoplasty, performed with the patient in a prone position. Reducing operative time is an important consideration, particularly to reduce the risk of postoperative complications in older patients. The purpose of this retrospective cohort study was to compare the operative time for open-door laminoplasty using TP or HA spacers. METHODS Consecutive patients with a spinal cord injury, without bone injury, and ≥ 50 years of age were included. Multivariate regression analysis was used to compare the operative time between patients in the TP and HA group, adjusting for known factors that can influence surgical and postoperative outcomes. Propensity score matching was used to confirm the robustness of the primary outcome. The cumulative incidence of postoperative complications over 1-year after surgery was also compared. RESULTS Of the 164 patients forming our study group, TP spacers were used in 62 and HA in 102. Operative time was significantly shorter for the TP (128 min) than HA (158 min) group (p < 0.001). Both multivariate and propensity score matching analyses confirmed a significant reduction in operative time for the TP, compared to HA, group (regression coefficient, - 30 min and - 38 min, p < 0.001 and p < 0.001, respectively). There was no significant difference in the cumulative incidence of postoperative complications. CONCLUSIONS The use of TP spacers reduced the operative time for cervical open-door laminoplasty by about 30 min, compared to the use of HA spacers, with no difference in the rate of postoperative complications.

中文翻译：

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使用钛板垫片或羟基磷灰石垫片垫片进行开门椎板成形术的手术时间比较：一项回顾性研究。

背景技术钛板（TP）和羟基磷灰石（HA）间隔件广泛用于在患者俯卧的情况下进行的开门椎板成形术中。减少手术时间是重要的考虑因素，尤其是要减少老年患者术后并发症的风险。这项回顾性队列研究的目的是比较使用TP或HA垫片进行开门椎板成形术的手术时间。方法包括连续性脊髓损伤，无骨损伤且年龄≥50岁的患者。多元回归分析用于比较TP和HA组患者之间的手术时间，并调整可能影响手术和术后结果的已知因素。倾向得分匹配用于确认主要结局的稳健性。还比较了术后1年以上术后并发症的累积发生率。结果在本研究组的164例患者中，TP垫片用于62例，HA使用102例。TP的手术时间（128分钟）明显短于HA（158分钟）组（p <0.001）。与HA组相比，多变量和倾向得分匹配分析均证实了TP的手术时间显着减少（回归系数分别为-30分钟和-38分钟，分别为p <0.001和p <0.001）。术后并发症的累积发生率无显着差异。结论与使用HA垫片相比，使用TP垫片可减少颈椎开门椎板成形术的手术时间约30分钟，且术后并发症发生率无差异。