Comparison of Clinical Outcomes of Cortical Bone Trajectory and Traditional Pedicle Screw Fixation in Posterior Lumbar Interbody Fusion

Posterior lumbar interbody fusion (PLIF) is a common surgical procedure and widely used in the treatment of lumbar degenerative disc disorders. Traditionally, posterior lumbar interbody fusion is done by using the traditional pedicle screw (PS) which offers great advantages, but at the same time it has some disadvantages which include the risk of superior facet joint violation and muscle damage. Recently, an alternative method of screw insertion via cortical bone trajectory (CBT) has been invented which has less invasive process and can be placed without the drawbacks associated with the traditional pedicle screw. However, it has to remain an interest whether CBT will provide similar or greater clinical outcomes compared to PS in PLIF. So the main aim of this review is to compare the clinical outcomes of cortical bone trajectory and traditional pedicle screw fixation in posterior lumbar interbody fusion based on the articles published on this topic. Compared to the traditional pedicle screw fixation, PLIF with CBT has similar clinical outcome based on pain intensity, ODI status and JOA score, as well as similar fusion rate and radiological evaluated complication such as loosening of screw. In addition PLIF with CBT has advantages of less facet joint violation, less blood loss, less intraoperative muscle damage and perioperative pain. On the basis of this study, we can suggest that PLIF with CBT can be considered as a reasonable alternative to PS in PLIF.

Risk factors and care of early surgical site infection after primary posterior lumbar interbody fusion

Objectives:To explore the risk factors and nursing measures of early surgical site infection(SSI)after posterior lumbar interbody fusion(PLIF).Methods:A total of 468 patients who received PLIF in our hospital from January 2017 to June 2020 were enrolled into this study.According to the occurrence of early SSI,the patients were divided into two groups,and the general data were analyzed by univariate analysis.Multivariate logistic regression analysis was conducted with the dichotomous variable of whether early SSI occurred and other factors as independent variables to identify the risk factors of early SSI and put forward targeted prevention and nursing measures.Results:Among 468 patients with PLIF,18 patients developed early SSI(3.85%).The proportion of female,age,diabetes mellitus and urinary tract infection(UTI),operation segment,operation time,post-operative drainage volume,and drainage time were significantly higher than those in the uninfected group,with statistical significance(P<0.05),whereas the preoperative albumin and hemoglobin in the infected group were significantly lower than those in the uninfected group,with statistical significance(P<0.05).There was no significant difference between the two groups in the American Society of Anesthesiologists(ASA)grading,body mass index(BMI),complications including cardiovascular and cerebrovascular diseases or hypertension(P>0.05).Logistic regression analysis showed that preoperative diabetes mellitus(OR=2.109,P=0.012)/UTI(OR=1.526,P=0.035),prolonged drainage time(OR=1.639,P=0.029)were risk factors for early SSI.Men(OR=0.736,P=0.027)and albumin level(OR=0.526,P=0.004)were protective factors in reducing early SSI.Conclusions:Women,preoperative diabetes/UTI,hypoproteinemia,and prolonged drainage time are risk factors for early SSI after PLIF.Clinical effective preventive measures should be taken in combination with targeted nursing intervention to reduce the risk of early SSI.

Biomechanical Effects of Implant Materials on Posterior Lumbar Interbody Fusion: Comparison of Polyetheretherketone and Titanium Spacers Using Finite Element Analysis and Considering Bone Density

Few biomechanical data exist regarding whether the polyetheretherketone (PEEK) spacer or titanium spacer is better for posterior lumbar interbody fusion (PLIF). This study evaluated the biomechanical influence that these types of spacers with different levels of hardness exert on the vertebra by using finite element analysis including bone strength distribution. To evaluate the risk of spacer subsidence for PLIF, we built a finite element model of the lumbar spine using computed tomography data of osteoporosis patients. Then, we simulated PLIF in L3/4 and built models with the hardness of the interbody spacer set as PEEK and titanium. Bones around the spacer were subjected to different load conditions. Then, fracture elements and some stress states of the two modalities were compared. In both models of PLIF simulation, fracture elements and stress were concentrated in the bones around the spacer. Fracture elements and stress values of the model simulating the PEEK spacer were significantly smaller compared to those of the titanium simulation model. For PLIF of osteoporotic vertebrae, this suggested that the PEEK spacer is in a mechanical environment less susceptible to subsidence caused by microfractures of bone tissue and bone remodeling-related fusion aspects. Therefore, PEEK spacers are bio-mechanically more useful.

Can bone mineral density affect intra-operative blood loss of mini-invasive posterior lumbar interbody fusion?

Objective:Many factors affect intraoperative blood loss(BL)in mini-invasive posterior lumbar interbody fusion(PLIF)procedures,but only few has examined.Specifically,the impact of bone mineral density(BMD)levels on intraoperative BL.This study aims to examine the correlation between these two factors.Methods:Retrospective review of 120 patients with low back disorders who were scheduled to undergo mini-invasive PLIF from October 2018 to October 2019 was performed.Patients were divided into two groups based on BMD of the lumbar spine:normal group and abnormal group(osteoporosis and osteopenia).Comparison of age,gender,BMD,BL,BMI,prothrombin time,activated partial thromboplastin time,haemoglobin concentration,intraoperative mean arterial pressure,platelet count,and operative time(OT)between the two groups,and correlation analysis of BMD and BL were conducted.Results:The mean BL of patients in the abnormal group was remarkably higher than that in the normal group:357.22±152.55 ml and 259.37±125.90 ml respectively(p<0.001).The partial correlation coefficient between BL and BMD was0.45(p<0.001).The results of univariate regression analysis demonstrated that only BMD,gender,and OT were related to BL(BMD,r=0.427,p<0.001;gender,r=0.211,p=0.024;OT,r=0.318,p=0.001).While multivariate linear regression analysis demonstrated that patients with lower BMD and longer OT had a higher amount of intraoperative BL(p<0.001).Conclusions:BMD is an important factor influencing intraoperative BL in mini-invasive PLIF.It should be assessed routinely as a part of the preoperative examination to improve preoperative assessment and ensure patient safety.

Delayed arterial symptomatic epidural hematoma on the 14th day after posterior lumbar interbody fusion:A case report

BACKGROUND Delayed arterial symptomatic epidural hematoma(SEH)on the 14th day after posterior lumbar interbody fusion(PLIF)is rare but it may lead to severe complications if not identified and treated in a timely manner.After diagnosis of the current case,early surgical removal of the hematoma and strict hemostasis treatment was accomplished.This case report highlights the importance of swift diagnosis and treatment in SEH patients.CASE SUMMARY A 41-year-old male patient with a single-segment lumbar disc herniation underwent left-side PLIF.On the 14th post-operative day,the patient complained of lumbar incision pain with sudden onset accompanied by left limb radiation pain and aggravated cauda equina symptoms.Magnetic resonance imaging examination and a puncture blood draw at the incision site confirmed a delayed arterial SEH.Emergency surgical removal of the hematoma and hemostasis was performed.About 70 mL of hematoma was found in the left incision.Continuous bleeding was found in the anterior branch of the transverse process of the 4th lumbar artery in the muscle area about 2 cm below the transverse process of the 4th lumbar vertebra.A blood jet of about 10 cm in height was observed and bipolar electrocoagulation was used to stop the bleeding.Post-operative lumbar incision pain and left lower limb pain were relieved immediately and gradually disappeared.There was no recurrence during the 12-mo follow-up.CONCLUSION For delayed arterial SEH on the 14th day after PLIF,preventive measures including pre-,intra-and post-operative prevention should be implemented.

Use of Nonlinear Finite Element Analysis of Bone Density to Investigate the Biomechanical Effect in the Bone around Intervertebral Cages in Posterior Lumbar Interbody Fusion

Preventing subsidence of intervertebral cages in posterior lumbar interbody fusion (PLIF) requires understanding its mechanism, which is yet to be done. We aimed to describe the mechanism of intervertebral cage subsidence by using finite element analysis through simulation of the osteoporotic vertebral bodies of an elderly woman. The data from computed tomography scans of L2-L5 vertebrae in a 72-year-old woman with osteoporosis were used to create 2 FE models: one not simulating implant placement (LS-INT) and one simulating L3/4 PLIF using polyetheretherketone (PEEK) cages (LS-PEEK). Loads and moments simulating the living body were applied to these models, and the following analyses were performed: 1) Drucker-Prager equivalent stress distribution at the cage contact surfaces;2) the distribution of damage elements in L2-L5 during incremental loading;and 3) the distribution of equivalent plastic strain at the cage contact surfaces. In analysis 1, the Drucker-Prager equivalent stress on the L3 and L4 vertebral endplates was greater for LS-PEEK than for LS-INT under all loading conditions and tended to be particularly concentrated at the contact surfaces. In analysis 2, compared with LS-INT, LS-PEEK showed more damage elements along the bone around the cages in the L3 vertebral body posterior to the cage contact surfaces, followed by the area of the L4 vertebral body posterior to the cage contact surfaces. In analysis 3, in the L3 inferior surface in LS-PEEK the distribution of equivalent plastic strain was visualized as gradually expanding along the cages from the area posterior to the cages to the area anterior to them with increased loading. These analyses suggested that in PLIF for osteoporotic vertebral bodies, the localized stress concentration generated by the use of PEEK cages may cause accumulation of microscopic damage in the fragile osteoporotic vertebral bodies around the cages, which may result in cage subsidence.

Posterior Lumbar Interbody Fusion versus Posterolateral Fusion in Surgical Treatment of Lumbar Spondylolithesis

Background: The optimal surgical technique for lumbar spondylolithesis remains debated. Although posterior lumbar interbody fusion (PLIF) theoretically offers more advantages than posterolateral lumbar fusion (PLF), the evidence remains inconclusive. Aim: The aim of this study is to compare the clinical and functional outcomes of PLIF versus PLF in patients with lumbar spondylolithesis. Patients and Methods: We enrolled 38 patients with lumbar spondylolithesis (degenerative and isthmic) who underwent PLIF (N = 19) or PLF (N = 19). We collected operative data and performed follow-up for 12 months after the surgery. The collected data were analyzed using the SPSS software to detected significant differences between both groups. Results: The PLF and PLIF groups exhibited similar pre-operative characteristics between both groups in terms of age (p = 0.57), sex (p = 0.73), clinical presentation (p = 1), required levels of fixation (p = 1), pre-operative VAS score (p = 0.43) or muscle weakness (p = 1). However, the PLIF group had significantly more blood loss and longer operative time than the PLF group. Moreover, both groups had similar levels of postoperative pain (up to six months after surgery), and post-operative complications. The rates of arthrodesis were higher in PLIF group than PLF group within six months while no significant difference within 12 months of follow-up. Conclusion: In our comparative study, we achieved comparison between pedicle screw fixation with posterolateral fusion alone (PLF) in compare with pedicle screw fixation with posterior lumbar interbody fusion (PLIF). Results indicate better results of fusion rate in PLIF as regards arthrodesis with slightly more rate of complication than PLF. So we recommend PLIF in cases of lumbar spondylolithesis than PLF.

Surgical Results of Posterior Lumbar Interbody Fusion with Transpedicular Fixation in Management of Spondylolisthesis

Objective: To evaluate the surgical results of posterior lumber interbody fusion with transpedicular fixation with rod screw system in management of spondylolisthesis. Study Design: Retrospective study reviewed all patient treated by lumber interbody fusion with transpedicular fixation with rod screw system. Patients and Methods: They were 40 patients operated for lumber and lumbosacral spondylolisthesis from Feb 2014 to April 2017 in Al-Azhar university hospital. These patients followed postoperatively clinically for improved neural function and for fusion stability and hardware fixation by radiological investigation. Data about pain intensity (by Visual Analogue Scale) was collected pre- and postoperatively;and outcome was assessed by Oswetry disability index (ODI). Outcome was graded as excellent, good, fair, or poor. Pre- and Post-operative data were statistically compared. Results: The mean age was 45 years (range between 30 - 60 years) with female sex predominance (male:female = 1:3). They had lytic (n = 30) or degenerative (n = 10) spondylolisthesis;and all underwent PLIF (posterior lumbar interbody fusion). In lytic group, the level was L4/L5 in 19 patients and L5/S1 in 11 patients, while in degenerative group the level was L4/L5 in 4 patients, L5/S1 in 3 patients, L2/L3 in 2 and L3/L4 in one patient. The spondylolisthesis grade was grade I among 25 subjects, grade two among 11 subjects and retrolisthesis among 4 subjects. Sensory deficits reported in 22 subjects (19 had lytic and 3 had degenerative spondylolisthesis);while motor deficits reported among 10 subjects and reduced reflexes among 8 subjects. The outcome was excellent, good, and fair among 30, 7, and 3 subjects respectively. The return to previous levels of activity was reported among 32 patients. VAS was 3.5 ± 2.94 at the end of follow up, while ODI was 28% and 36.0% and 3 and 6 months respectively. Conclusion: PLIF associated with transpedicular rod screw fixation system for management of spondylolisthesis is considered a safe and effective surgical intervention in both lytic and degenerative types.

One Stage Anterior Reconstruction and Posterior Instrumentation in Surgical Management of Thoracolumbar Spine Fractures

Background: The different methods of anterior reconstruction and posterior instrumentation in surgical management of thoracolumbar spine fractures are PLIF, TLIF, lateral extracaviatary and transpedicular techniques which are increasingly used to perform partial or total corpectomies and anterior reconstructions from a posterior approach. These techniques were being alternative to the standard anterior approach with less morbidity and mortality. Patients and Methods: This study was performed between 2011 and 2014 on 100 patients with acute unstable thoracolumbar spine fractures which were divided into four groups: 30 patients underwent (TLIF), 28 patients underwent (PLIF), 28 patients underwent (PA) and 14 patients underwent (TPA). Neurological outcome, complications, operative times, kyphotic angle, vertebral height loss, spinal canal compromise, pulmonary functions, Denis pain and work scale, VAS score, ODI score, hospital stay, and estimated blood loss (EBL) were evaluated and compared in between the four groups. Results: There was a higher complication rate, increased EBL, and longer operative time with posteroanterior (PA) compared with PLIF, TLIF and (TPA). Patients undergoing PLIF, TLIF and TPA had a greater recovery of neurological function than those in whom PA were performed. Conclusion: TPA appeared to have more favorable results in improving the clinical and radiological outcome and no complications were reported apart from superficial wound infection which healed rapidly. The PLIF, TLIF and TPA appeared to have a comparable morbidity rate to PA. The different methods of anterior reconstruction from posterior approach are more favorable, applicable and convenient than PA approach.

改良TLIF与PLIF治疗老年性双侧腰椎管狭窄的效果对比

目的:研究比较改良椎间孔入路腰椎椎间融合术(TLIF)与后路腰椎椎体间融合术(PLIF)治疗老年性双侧腰椎管狭窄的效果。方法:选择2022年6月—2023年8月在乐平市中医医院接受治疗的98例老年性双侧腰椎管狭窄患者作为研究对象,随机分为对照组与观察组,各49例。对照组实施PLIF治疗,观察组实施改良TLIF治疗。比较两组临床指标、视觉模拟评分法(VAS)评分、日本骨科协会(JOA)腰椎功能评分、椎间融合率。结果:两组临床指标比较,差异均有统计学意义(P<0.05)。术后1个月,两组VAS评分和JOA腰椎功能评分比较,差异均无统计学意义(P>0.05);术后3个月,观察组VAS评分和JOA腰椎功能评分均优于对照组,差异均有统计学意义(P<0.05)。术后1个月,两组椎间融合率比较,差异无统计学意义(P>0.05);术后3个月,观察组椎间融合率明显高于对照组,差异有统计学意义(P<0.05)。结论:改良TLIF与PLIF均可改善老年性双侧腰椎管狭窄患者的腰腿疼痛症状与脊柱功能,但是改良TLIF更利于患者早期康复,可减轻患者疼痛程度及住院时间,相对优于PLIF,临床可根据患者具体情况选择术式。

TLIF与PLIF治疗腰椎退行性疾病的应用研究

目的探讨TLIF及PLIF两种手术方式在治疗腰椎退行性疾病中的临床疗效。方法选取2019~2023年在本院骨伤科进行治疗的60例腰椎退行性疾病患者。通过随机数字法分为PLIF组30例,TLIF组30例。TLIF组采用TLIF手术方式,PLIF组采用PLIF手术方式。记录两组患者的住院时间、手术时间、出血量、术后引流量、融合成功率;术前、术后1周、术后第1个月、第3个月的VAS评分、日本骨科协会评估治疗分数(JOA)评分;术前及术后1周的世界卫生组织生活质量简易量表(WHOQOL-BREF)评分。记录术后神经根损伤、感染、内固定失败等并发症的发生率,作统计学分析。结果TLIF组患者的住院时间、手术时间、出血量及术后引流量对比PLIF组均具有明显优势,差异有统计学意义(P<0.05);两组患者术后VAS评分较术前明显降低,术后1周TLIF组评分明显低于PLIF组,差异有统计学意义(P<0.05)。患者术后腰椎功能明显改善,TLIF组术后1周腰椎功能较PLIF组明显改善(P<0.05),两组术后1个月、3个月对比无统计学差异。术后WHOQOL-BREF评分比较,四个维度评分均差异有统计学意义(P<0.05)。TLIF组并发症发生率为10.00%,低于PLIF组的23.33%(P<0.05)。融合率情况对比,TLIF组为90.00%,高于PLIF组的83.33%,但差异无统计学意义。结论TLIF手术在治疗腰椎退变性疾病中具备明显优势,对于快速恢复患者脊柱功能、减轻术后疼痛及避免手术后并发症具有更好的临床效果;并且,在保留椎体稳定性中更具优势。

TLIF与PLIF治疗多节段腰椎管狭窄症的临床效果

目的:探究经椎间孔椎体间融合术(TLIF)与腰椎经后路椎体间融合内固定术(PLIF)治疗多节段腰椎管狭窄症的临床效果。方法:选取2016年4月—2020年4月驻马店魏道德骨科医院收治的120例多节段腰椎管狭窄患者作为研究对象,根据手术方法分为TLIF组(62例)和PLIF组(58例)。比较两组患者手术时间、住院时间、切口长度、术中失血量、疼痛视觉模拟评分(VAS)、Oswestry功能障碍指数(ODI)、椎间隙高度及并发症发生情况。结果:与PLIF组比较,TLIF组切口更小,手术和住院时间更短,术中出血量更少,差异有统计学意义(t=19.439、5.128、12.217、9.524,P<0.05);两组患者VAS、ODI及椎间隙高度的时间因素和分组因素均存在交互效应,差异有统计学意义(F=4.872、4.438、3.890,P<0.05);两组患者VAS、ODI及椎间隙高度总体比较存在分组效应,差异有统计学意义(F=9.571、5.490、6.129,P<0.05);两组患者手术前后不同时间点VAS、ODI及椎间隙高度存在时间效应,差异有统计学意义(F=2773.355、1554.785、500.750,P<0.05);术后6个月,TLIF组VAS及ODI低于PLIF组,椎间隙高度高于PLIF组,差异有统计学意义(F=5.654、5.869、5.687,P<0.05);术后12个月,两组患者VAS、ODI及椎间隙高度比较,差异无统计学意义(F=1.729、1.253、1.496,P>0.05);术后随访12个月,TLIF组的并发症发生率低于PLIF组,差异有统计学意义(χ^(2)=3.928,P<0.05)。结论:PLIF与TLIF均能有效改善多节段腰椎管狭窄症的腰椎功能及缓解疼痛,但TLIF恢复快、手术创伤小、术后并发症少。

平乐疏肝活血汤防治PLIF术后早期胃肠道并发症临床观察

目的:观察平乐疏肝活血汤防治后路腰椎椎间融合术(posterior lumbar interbody fusion,PLIF)术后早期胃肠道并发症的临床疗效。方法:将60例接受PLIF手术后出现胃肠道并发症的患者按照随机数字表法分为治疗组与对照组,每组30例。治疗组给予术后常规腹部按摩、穴位贴敷护理,并给予平乐疏肝活血汤治疗,对照组给予术后常规腹部按摩、穴位贴敷护理,并给予枸橼酸莫沙必利片口服治疗。观察治疗后两组的临床疗效、治疗前后两组患者的腹胀评分、腹痛评分及便秘症状积分,比较两组患者术后首次肛门排气、首次排便时间、胃肠道激素及炎症因子水平的差异。结果:治疗组有效率为93.3%,对照组有效率为70.0%,治疗组有效率高于对照组,差异有统计学意义(P<0.05);治疗组治疗后腹胀评分、腹痛评分及便秘症状评分低于对照组,差异具有统计学意义(P<0.05);治疗组术后首次排气时间、首次排便时间短于对照组,差异具有统计学意义(P<0.05);治疗组治疗后促胃动素、生长抑素及胆囊收缩素水平高于对照组,差异具有统计学意义(P<0.05);治疗组治疗后白细胞计数、C反应蛋白及降钙素原水平低于对照组,差异具有统计学意义(P<0.05)。结论:平乐疏肝活血汤防治PLIF术后早期胃肠道并发症,能减轻腹痛、腹胀及便秘症状,促进术后排气、排便,提高促胃动素、生长抑素及胆囊收缩素水平,降低白细胞计数、C反应蛋白及降钙素原水平。

PLIF手术在腰椎滑脱中的应用探讨

目的:探讨比较几种形式的PLIF手术治疗腰椎滑脱症的疗效.方法:63例患者根据融合方式分成A(椎弓根固定+后外侧植骨)、B(椎弓根固定+后路椎体间自体植骨)、C(椎弓根固定+后路椎体间融合+Cage)三组,使用ODI评分方法对患者术前术后的情况进行评估,使用VAS评分标准对患者术前和术后疼痛的程度进行评估,使用SUK标准对术前术后的正侧位片及Bending片进行融合的评估.结果:三组病例42例获得随访,随访1～2年.B、C两组在腰椎稳定性及临床疗效方面均优于A组,C组在椎间高度、生理曲度维持方面均优于A、B两组.结论:后路椎弓根螺钉内固定加椎体间Cage融合术是治疗腰椎滑脱的理想术式.

PLF与PLIF手术治疗腰椎滑脱症的疗效比较

目的:对比研究后外侧融合(PLF)与经后路椎体间融合(PLIF)治疗Ⅰ度和Ⅱ度腰椎滑脱症的疗效。方法:67例腰椎滑脱症患者分为PLF组32例,PLIF组35例。两组年龄、病程、术前临床表现及影像学资料相近似。PLF组JOA评分16.3±7.8分,PLIF组14.5±6.5分。两组均进行了后路椎板减压,短节段经椎弓根钉系统复位与固定。结果:PLF组手术时间平均187min,出血量平均680ml;PLIF组手术时间248min,出血量平均945ml。PLIF组慢性下腰痛改善明显高于PLF组(P=0.042),而临床疗效JOA评分两组间无显著性差异。骨融合率PLF组74.8%,PLIF组94.3%(P=0.011),经随访PLF组矫正率丢失30.9%,而PLIF组为9.8%(P<0.05)。PLF组各种并发症19例,PLIF组11例。结论:PLF与PLIF手术均是治疗腰椎滑脱症的有效术式,PLIF手术时间较长,创伤大,但骨融合率高,内固定失败率低,滑脱矫正率丢失少,晚期慢性下腰痛发生率低。

TLIF与PLIF治疗腰椎退变性疾病的疗效对比

目的:对比经椎间孔椎体间融合术(transforaminal lumbar interbody fusion,TLIF)与经后路椎体间融合术(posterior lumbar interbody fusion,PLIF)治疗单节段腰椎退变性疾病的临床疗效。方法:收集我院行经单侧椎间孔椎体间融合术结合椎弓根钉系统(TLIF组)治疗腰椎退变性疾病21例,行单节段经后路椎体间融合术结合椎弓根钉系统(PLIF组)治疗腰椎退变性疾病50例,比较TLIF组与PLIF组手术时间、术中出血量、术后引流量、术后住院时间、并发症发生率及植骨融合率;比较两组内及组间术前及末次随访的汉化版oswestry功能障碍指数问卷调查表(Oswestry disability index questionnaire,ODI)、手术上邻节段活动度。结果:随访12～36个月,平均24个月。TLIF组平均手术时间、术中出血量、术后引流量、术后住院时间均少于PLIF组,差异有统计学差异(P<0.05)。末次随访两组ODI功能障碍指数均较术前降低,差异有统计学意义(P<0.05);术前及末次随访组间差异无统计学意义(P>0.05)。末次随访TLIF组手术上邻节段活动度较术前差异无统计学意义(P>0.05),PLIF组手术上邻节段活动度较术前增大,差异有统计学意义(P<0.05),术前组间差异无统计学意义(P>0.05),末次随访PLIF组手术上邻节段活动度较TLIF组增大,差异有统计学意义(P<0.05)。结论:TLIF和PLIF是治疗腰椎退变性疾病两种有效的手术方式,两者近期疗效满意;TLIF较PLIF术后住院时间、手术时间短,术中出血量、术后引流量少,并发症发生率低;TLIF较PLIF能更好保留脊柱后柱韧带复合体结构,减少手术上邻节段活动度。

TLIF与PLIF治疗腰椎退行性疾病疗效的Meta分析

目的:对TLIF与PLIF治疗腰椎退行性疾病的疗效及并发症进行Meta分析。方法:检索Medline、Ovid、中国生物医学文献数据库系统(CBM)、中国期刊全文数据库(CNKI)、中文科技期刊全文数据库(VIP)等数据库,检索时间至2012年5月。本研究提取的评价指标包括手术时间、手术失血量、住院时间、视觉模拟评分(visual analogue scale,VAS)、Oswestry功能残障指数(Oswestry disability index,ODI)等指标和并发症例数。应用Review Manager 5.1软件进行数据分析。结果:纳入文献9篇,其中随机对照研究1篇,队列研究8篇。共981例,TLIF组457例,PLIF组524例。两组间比较,手术失血量(P=0.002)及住院时间(P=0.02)TLIF组少于PLIF组,而优良例数(P=0.27)、手术时间(P=0.07)、VAS评分(P=0.61)和ODI评分(P=0.24)两组间无差异;总并发症两组间差异显著(P<0.0001),其中神经损伤(P=0.001)、硬膜损伤(P=0.04)TLIF组较少,而脑脊液漏(P=0.25)、螺钉松动(P=0.14)、内固定失败(P=0.86)、未融合例数(P=0.41)和感染(P=0.51)两组间无显著性差异。结论:两者临床总疗效优良率相当,但TLIF手术在手术失血量、住院时间及术后并发症方面,尤其是对神经和硬膜的损伤,较PLIF明显减少。TLIF手术是一种更安全有效地治疗腰椎退行性疾病的方法。

PLIF联合PLF与单纯PLIF治疗腰椎退行性疾病的临床比较研究

目的:比较后路椎体间融合(PLIF)联合后外侧融合(PLF)与单纯PLIF治疗腰椎退行性疾病的疗效。方法:78例接受脊柱融合治疗的腰椎退行性疾病患者,随机分为PLIF联合PLF组(n=40)和单纯PLIF组(n=38),随访24周,在不同的时间点观察所有病例的OD I指数、腰椎前凸角、节段前凸角、椎间隙高度、腰椎滑脱率及融合率,并记录术中出血量、术后48 h内引流量、术后切口疼痛程度及并发症发生情况,根据随访结果对两组进行比较。结果:78例均获得随访,PLIF联合PLF组与单纯PLIF组之间临床症状改善、腰椎前凸角、节段前凸角及椎间隙高度、滑脱率改善、两组间融合率和出血量无明显统计学差异(P>0.05),PLIF联合PLF组术后48 h内引流量较单纯PLIF组多(P<0.05),术后3 d切口疼痛程度大于单纯PLIF组(P<0.05)。结论:联用或不联用PLF对椎弓根内固定下PLIF治疗腰椎退行性疾病的短期临床疗效、融合率无明显影响,联用PLF可增加手术创伤。

PLIF加椎弓根内固定治疗腰椎间盘源性腰痛

[目的]研究后路椎体间融合加椎弓根固定治疗腰椎间盘源性腰痛的手术疗效。[方法]36例腰椎间盘源性下腰痛,选择后路椎体间植骨融合(posterior lumbar interbody fusion,PLIF)加椎弓根螺钉系统内固定术。分别于术前、术后对病人的腰痛情况进行视觉疼痛自我评定(visual analogue scale,VAS)评分,同时评估术后腰椎融合率。[结果]术后随访时间8～28个月,平均16个月。36例行PLIF治疗者,33例术后腰腿痛症状基本消失,3例仍有轻度腰痛,术前、术后VAS腰痛评分,差异有统计学意义(P<0.01)。行PLIF患者,融合率为90%。[结论]严格掌握手术适应证,后路腰椎椎体间融合术(PLIF)加椎弓根内固定是治疗腰椎间盘源性下腰痛的有效方法。

单切口Quardrant通道下misTLIF与改良PLIF治疗腰椎管狭窄症的疗效比较

目的评估Quardrant通道下misTLIF治疗腰椎管狭窄的疗效,与改良PLIF手术进行比较。方法回顾分析85例腰椎管狭窄患者,根据手术方案分为A、B组,A组采用Quardrant通道下采用单侧减压融合(misTLIF)联合双侧椎弓根螺钉内固定手术治疗,B组采用行后路椎体间融合术(改良PLIF)治疗,比较2组患者术后疼痛VAS评分,JOA评分和功能障碍指数ODI评分。结果 A组患者手术出血量显著低于B组(P<0.05)。2组患者术后半年时JOA评分改善率相似。术后2年随访时,A组的ODI评分和VAS评分改善显著优于B组(P<0.05)。结论 Quardrant通道下单侧减压椎间融合双侧椎弓根螺钉固定治疗腰椎管狭窄疗效确切。