Abstract：
OBJECTIVE: The transpsoas lateral lumbar interbody fusion (LLIF) procedure is a minimally invasive lumbar spine approach that provides indirect neural decompression, improved sagittal alignment, and a high fusion rate. Typically accompanied by posterior pedicle screw insertion, there has been interest in performing LLIF in a single position to decrease cost and time under anesthesia. However, there is a paucity of direct comparisons between single-position LLIF via prone versus lateral decubitus positioning. Therefore, this study aims to compare the outcomes of a single surgeon performing prone versus lateral single-position LLIF, inclusive of the L4-L5 level.
METHODS: A retrospective review was performed of a consecutive case series of patients who underwent either prone or lateral, single-position LLIF by a single surgeon. All cases involved the L4-L5 level. Demographic data, perioperative details, clinical outcomes, and preoperative and postoperative lumbar lordosis were recorded.
RESULTS: Sixty-three patients underwent lateral and 16 patients underwent prone single-position LLIF. Demographics and average interbody size were similar between groups. Operative time, change in lumbar lordosis, and length of hospital stay did not differ between the 2 positions. Both groups performed similarly in terms of preoperative and postoperative visual analog score pain score and complications. Patients who underwent lateral position LLIF ambulated farther on postoperative day 1 (250 feet vs. 200 feet, P = 0.015). Average time to follow up was 53 weeks.
CONCLUSIONS: This study demonstrates promising preliminary results indicating that single-position LLIF performs well, even at the L4-L5 level, in both the prone and lateral positions.
METHODS: A retrospective review was performed of a consecutive case series of patients who underwent either prone or lateral, single-position LLIF by a single surgeon. All cases involved the L4-L5 level. Demographic data, perioperative details, clinical outcomes, and preoperative and postoperative lumbar lordosis were recorded.
RESULTS: Sixty-three patients underwent lateral and 16 patients underwent prone single-position LLIF. Demographics and average interbody size were similar between groups. Operative time, change in lumbar lordosis, and length of hospital stay did not differ between the 2 positions. Both groups performed similarly in terms of preoperative and postoperative visual analog score pain score and complications. Patients who underwent lateral position LLIF ambulated farther on postoperative day 1 (250 feet vs. 200 feet, P = 0.015). Average time to follow up was 53 weeks.
CONCLUSIONS: This study demonstrates promising preliminary results indicating that single-position LLIF performs well, even at the L4-L5 level, in both the prone and lateral positions.
摘要：
目的：经肌外侧腰椎椎间融合术（LLIF）是一种微创腰椎入路，可提供间接神经减压术，改进的矢状对齐，和高融合率。通常伴有后路椎弓根螺钉插入，有兴趣在单一位置进行LLIF,以减少麻醉下的成本和时间.然而,通过俯卧位与侧卧位定位的单位置LLIF之间缺乏直接比较。因此,该螺柱旨在比较单个外科医生进行俯卧和横向单位置LLIF的结果，包括L4-L5级别。
方法：对连续病例系列患者进行回顾性分析，这些患者接受了俯卧或侧卧，所有病例均涉及L4-L5水平。人口统计数据,围手术期细节，临床结果，记录术前、术后腰椎前凸。
结果：63例患者接受侧卧位，16例患者接受俯卧单位置LLIF。各组之间的人口统计学和平均椎体间大小相似。手术时间,腰椎前凸的改变,两个位置之间的住院时间没有差异。两组患者术前和术后VAS疼痛评分相似，和并发症。在术后第1天接受侧卧位LLIF的患者走得更远（250vs.200英尺,p=0.015)。平均随访时间为53周。
结论：这项研究显示了有希望的初步结果，表明单位置LLIF表现良好，即使在L4-L5级别，在俯卧和侧卧位。
方法：对连续病例系列患者进行回顾性分析，这些患者接受了俯卧或侧卧，所有病例均涉及L4-L5水平。人口统计数据,围手术期细节，临床结果，记录术前、术后腰椎前凸。
结果：63例患者接受侧卧位，16例患者接受俯卧单位置LLIF。各组之间的人口统计学和平均椎体间大小相似。手术时间,腰椎前凸的改变,两个位置之间的住院时间没有差异。两组患者术前和术后VAS疼痛评分相似，和并发症。在术后第1天接受侧卧位LLIF的患者走得更远（250vs.200英尺,p=0.015)。平均随访时间为53周。
结论：这项研究显示了有希望的初步结果，表明单位置LLIF表现良好，即使在L4-L5级别，在俯卧和侧卧位。
