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首页> 外文期刊>The spine journal: official journal of the North American Spine Society >Fusion rates of a morselized local bone graft in polyetheretherketone cages in posterior lumbar interbody fusion by quantitative analysis using consecutive three-dimensional computed tomography scans
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Fusion rates of a morselized local bone graft in polyetheretherketone cages in posterior lumbar interbody fusion by quantitative analysis using consecutive three-dimensional computed tomography scans

机译：连续三维计算机断层扫描定量分析在腰椎后路椎间融合中聚醚醚酮笼中杂乱的局部骨移植物的融合率

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Background context: Posterior lumbar interbody fusion (PLIF) using harvested local bone inserted into a polyetheretherketone (PEEK) cage is a commonly used procedure, but the accurate fusion rate of a cage, cage to bone contact area ratio, and the changes in fusion rate with time after surgery are unknown. Purpose: The aim was to conduct a quantitative analysis of the fusion rates and the cage to bone contact area ratios at each period of time using a PEEK cage in PLIF using a consecutive three-dimensional (3D) computed tomography (CT) scan. Study design: This was a prospective study using a consecutive 3D thin-section CT scan. Patient sample: Thirty patients aged between 37 and 73 years set to undergo elective PLIF with PEEK cages and pedicle screw fixation were included in the study. Outcome measures: The assessments included the Korean Oswestry Disability Index (K-ODI), Short Form (SF)-36 questionnaire, Visual Analog Scale (VAS) pain score, and dynamic plane radiographs, preoperatively and at 6 and 12 months after surgery. Methods: Three-dimensional CT scans were performed at 6 and 12 months after surgery. Three-dimensional CT assessments of the following were performed: fusion rate of the cage, cage to bone contact area ratio, and fusion rate of the interbody bone graft besides the cage. Results: The 6-month fusion rate of the segment was 86.7%, which increased to 90.0% at 12 months. The fusion area ratio between the cage area and end plate showed a significant increase from 52.0% at 6 months to 58.5% at 12 months. Regarding the fusion area ratio between the cage and end plate, the ratio between the lower surface of the cage was significantly higher than that of the upper surface. In addition, the K-ODI, SF-36, and VAS values were similar at 6 and 12 months after surgery. Conclusions: The fusion rate of the PEEK cage used in PLIF measured at 12 months was higher than that measured at 6 months. Therefore, an assessment on the complete fusion of local bone at 12 months after surgery is more accurate.
机译：背景资料：后路腰椎椎间融合术（PLIF）使用的是将收获的局部骨插入聚醚醚酮（PEEK）笼中，这是一种常用的方法，但是笼的准确融合率，笼与骨接触面积之比以及融合率的变化手术后的时间不详。目的：目的是使用PLIF中的PEEK笼，通过连续的三维（3D）计算机断层扫描（CT）扫描，对每个时间段的融合率和笼与骨接触面积之比进行定量分析。研究设计：这是一项使用连续3D薄层CT扫描的前瞻性研究。患者样本：30例年龄在37至73岁之间的患者接受了PEEK笼和椎弓根螺钉固定的择期PLIF治疗。结果测量：评估包括韩国Oswestry残疾指数（K-ODI），简表（SF）-36问卷，视觉模拟量表（VAS）疼痛评分和动态平面X线照片，分别在术前和术后6个月和12个月进行。方法：在术后6个月和12个月进行三维CT扫描。进行了以下三个方面的三维CT评估：笼的融合率，笼与骨的接触面积比以及除笼之外的椎间植骨的融合率。结果：该节段的6个月融合率为86.7％，在12个月时增加到90.0％。笼形区域和端板之间的融合区域比率显示从6个月的52.0％显着增加到12个月的58.5％。关于保持架和端板之间的熔合面积比，保持架的下表面之间的比明显高于上表面。此外，术后6个月和12个月的K-ODI，SF-36和VAS值相似。结论：PLIF中使用的PEEK笼的融合率在12个月时高于在6个月时。因此，对术后12个月局部骨完全融合的评估更为准确。

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