Plate fixation adds stability to two-level anterior fusion in the cervical spine: a randomized study using radiostereometry

This study evaluated whether addition of a cervical spine locking plate (CSLP) in two-level disc fusions improved the postoperative stability and reduced the time to healing. Radiostereometric analysis was used to obtain precise recordings of the three-dimensional motion between the fused vertebrae. Eighteen consecutive patients were operated on with excision of two adjacent cervical discs and anterior horseshoe grafting with autologous bone (Smith Robinson technique). Nine patients were randomized to stabilization with autologous bone grafting and CSLP plate fixation and nine patients to grafting without fixation. Clinical symptoms in terms of pain in the neck and the arm were analysed preoperatively and after 1 year using a visual analogue scale (VAS). The patients operated without a plate displayed increased rotations around the transverse axis, corresponding to the development of a kyphosis [mean value no plate/plate 14.4°/0.8° (repeated measure ANOVA: P < 0.01)]. The mean compression was 3.2 mm larger in patients operated without a plate (repeated measure ANOVA: P < 0.01). Patients operated without a plate had more arm pain at the 1-year follow up (P < 0.05, Mann-Whitney U test). The VAS score for neck pain did not differ significantly between the two groups. Plate fixation could not be demonstrated to increase the healing rate, promote more rapid fusion or influence the frequency of graft complications. Received: 17 September 1997 Revised: 21 February 1998 Accepted: 2 March 1998     

Esophagus perforation complicating anterior cervical spine surgery

Purpose  

To study the diagnosis and treatment strategy of esophagus perforation complicating anterior cervical spine surgery.     

颈前路植骨钢板内固定治疗创伤性枢椎前滑移

目的 评价C2、C3椎体间植骨、钢板内固定治疗创伤性枢椎前滑移的临床价值。方法 8例创伤性枢椎前滑移患行颈前路手术复位、椎间盘切除减压、自体髂骨植骨、钢板内固定术，平均随访1年，观察患术后颈椎生理高度、曲度重建和颈椎稳定性、运动情况。结果 8例患均获得完全的枢椎复位，C2、C3椎体在术后16周达到骨性融合，颈椎生理高度、曲度得以重建，旋转、屈伸功能良好，无钢板螺钉并发症。结论 颈前路钢板内固定是治疗创伤性枢椎前滑移的有效方法。     

Common pitfalls in interpretation of medical evidence: a case demonstration of misleading interpretation in the analysis of cervical spine fusions

BackgroundEvidence-based clinical practice requires the incorporation of information available in the medical literature into clinical decision making. Reliance on randomized trials as criteria for making recommendations is usually impractical. Conclusions based on low-quality information or post hoc analysis of high-quality information must be interpreted with caution.PurposeTo present a clinical research “case report” as means to describe common pitfalls faced by authors, editors, and readers of the medical literature with a focus on spinal surgery.Study design/settingThis article describes a historical cohort study performed at a university hospital.Patient sampleOne hundred thirty-eight consecutive patients treated with single-level anterior cervical discectomy and fusion (ACDF) by a single surgeon.Outcomes measureThe primary outcome measure was the need for reoperation.MethodsThe authors performed a retrospective cohort comparison of 138 consecutive patients treated with single-level ACDF using either constrained or translational plates. The primary outcome measure of interest was the need for reoperation at the index or adjacent level. The mean follow-up exceeded 3 years in both groups.ResultsPatients treated with a single-level ACDF using a translational plate had a decreased incidence of reoperation compared with those treated with a constrained plate (1.6% translational, 12% constrained). This result was initially felt to be statistically significant when analyzed primarily (p<.05). When further analysis was used to account for potential differences in the patient populations, the significance of this result was lost (p=.16).ConclusionsFaulty study design or overaggressive statistical data mining leads to unreliable conclusions. It is important that practicing spinal surgeons appreciate the perils and pitfalls of interpretation of the medical literature. Common sense, clinical experience, and healthy skepticism are indispensable for the rational incorporation of lesser quality information from the medical literature into clinical decision making.     

单开门椎管扩大椎板成形术在颈椎病再手术中的应用及疗效分析

目的 评价应用单开门椎管扩大椎板成形术进行颈椎病再手术的适应证及临床疗效.方法 自2003年2月至2009年6月,对15例颈椎前路融合术后症状复发或加重的患者行后路单开门椎管扩大椎板成形术.分析再手术的原因和疾病进展过程,采用日本骨科学会制定的JOA评分系统评估患者脊髓神经功能恢复情况,Nurick分级评价患者行走功能.结果 1例失随访,1例术后随访时间过短,未统计入本组.其余13例患者随访时间13～52个月,平均26个月.前后两次手术间隔时间为5个月～6年,平均24个月.再手术原因包括:邻近节段退变压迫颈髓2例,首次手术减压不彻底5例,后纵韧带骨化症(OPLL)误诊颈椎病4例,局限型OPLL进展2例.再手术均采用C3-6或C7后路单开门椎管扩大椎板成形术.13例患者JOA评分术前和末次随访时分别为10.5和13.8分(P＜0.05),平均神经功能改善率为53.0%.Nurick分级术前和随访时分别为3.1和1.9级(P＜0.05),平均改善1.2级.术后并发症包括脑脊液漏1例,颈肩部轴性痛1例,C5神经根麻痹l例.结论 对于颈椎前路融合术后减压不彻底、邻近节段退变或OPLL进展导致症状复发者采用后路单开门椎管扩大椎板成形术可以有效缓解脊髓压迫,改善脊髓神经功能,避免再次经前方入路引起的手术风险.     

Bilateral vocal cord paralysis after anterior cervical discoidectomy and fusion in a case of whiplash cervical spine injury: a case report

BACKGROUND

Bilateral vocal cord paralysis is a risk of anterior cervical discoidectomy and fusion. We discuss the mechanism of vocal cord paralysis and the precautions necessary to avoid this catastrophic complication. A rare case of bilateral vocal cord paralysis after anterior cervical discoidectomy and fusion (ACD/F) is reported.

CASE DESCRIPTION

The patient, a 37-year-old male, was paraplegic, had bilateral intrinsic hand muscle weakness and sphincter involvement following a whiplash cervical spinal injury. A C5-C6 ACD/F for traumatic C5-C6 disc prolapse was performed. On the third postoperative day, he developed difficulty in coughing and a husky voice. Otolaryngological evaluation revealed bilateral vocal cord paralysis. He later required a tracheostomy that partially alleviated his major symptoms.

CONCLUSION

In patients undergoing ACD/F, a mandatory preoperative evaluation of the vocal cords should be performed. An appropriate modification in surgical planning should be made if vocal cord palsy is diagnosed preoperatively to prevent bilateral vocal cord paralysis. Proper and judicious use of Cloward retractors is advocated.     

颈椎人工椎间盘置换术与颈椎前路减压融合术治疗双节段颈椎病的Meta分析

目的:系统评价前路颈椎人工椎间盘置换术(anterior cervical artificial disc replacement,ACDR)与前路颈椎减压融合术(anterior cervical decompression and fusion,ACDF)治疗双节段颈椎病的有效性与安全性。方法:计算机检索2016年5月1日以前Pub Med、Embase、Medline、Cochrane图书馆、中国生物医学文献数据库(CBM)、中国期刊全文数据库(CNKI)、万方数据库(Wanfang Database)、维普中文科技期刊数据库(VIP)关于应用ACDR与ACDF治疗双节段颈椎病的随机对照试验(randomized control Ied trials,RCT)及队列研究(cohort study)的文献,纳入文献的方法学质量采用改良Jadad量表及MINORS量表评价,提取各研究中术后24个月、48个月、60个月时的颈部功能障碍指数(NDI)评分、颈痛VAS评分、上肢痛VAS评分、SF-36评分、神经功能改善率、邻近节段椎间盘退变、再手术率、不良事件、患者满意度数据,并将这些研究的数据通过Review Manager 5.3软件进行Meta分析。结果:共纳入9篇文献、2570例患者,随访时间24~60个月,ACDR组1601例,ACDF组969例。纳入文献改良Jadad评4分3篇,3分4篇;MINORS评分18分2篇。Meta分析结果显示:术后24个月、48个月、60个月随访时,ACDR组的NDI[SMD=0.52;95%CI:(0.43,0.62),P0.00001]、颈痛VAS[SMD=0.19;95%CI:(0.10,0.29),P0.0001]、上肢痛VAS[SMD=0.15;95%CI:(0.06,0.25),P=0.002]、SF-36生理健康评分(PCS)[SMD=0.35;95%CI:(0.25,0.44),P0.00001]改善均优于ACDF组;神经功能改善率[RR=1.01;95%CI:(0.97,1.05),P=0.54]两组比较无统计学差异;两组上位椎间盘退变[RR=0.43;95%CI:(0.37,0.51),P0.00001]、下位椎间盘退变[RR=0.35;95%CI:(0.19,0.66),P=0.001]、再手术率[RR=0.30;95%CI:(0.23,0.40),P0.00001]、不良事件发生率[RR=0.72;95%CI:(0.58,0.89),P=0.003]、满意度[RR=1.08;95%CI:(1.04,1.11),P0.0001]比较差异均有统计学意义,ACDR组均优于ACDF组。结论:ACDR和ACDF治疗双节段颈椎病在改善神经功能方面一致,但在提高患者术后生活质量、减少手术相关并发症方面,前者优于后者。     

Outcomes of three anterior decompression and fusion techniques in the treatment of three-level cervical spondylosis

The purpose of this article is to compare the outcomes of three different anterior approaches for three-level cervical spondylosis. The records of 120 patients who underwent anterior approaches because of three-level cervical spondylosis between 2006 and 2008 were reviewed. Based on the type of surgery, the patients were divided into three groups: Group 1 was three-level anterior cervical discectomy and fusion (ACDF); Group 2 anterior cervical hybrid decompression and fusion (ACHDF, combination of ACDF and ACCF); and Group 3 two-level anterior cervical corpectomy and fusion (ACCF). The clinical outcomes including blood loss, operation time, complications, Japanese Orthopedic Association (JOA) scores, C2–C7 angle, segmental angle, and fusion rate were compared. There were no significant differences in JOA improvement and fusion rate among three groups. However, in terms of segmental angle and C2–C7 angle improvement, Group 2 was superior to Group 3 and inferior to Group 1 (all P < 0.01). Group 2 was less in operation time than Group 3 (P < 0.01) and more than Group 1 (P < 0.01). Group 3 had more blood loss than Group 1 and Group 2 (all P < 0.01) and had higher complication rate than Group 1 (P < 0.05). No significant differences in blood loss and complication rate were observed between Group 1 and Group 2 (P > 0.05). ACDF was superior in most outcomes to ACCF and ACHDF. If the compressive pathology could be resolved by discectomy, ACDF should be the treatment of choice. ACHDF was an ideal alternative procedure to ACDF if retro-vertebral pathology existed. ACCF was the last choice considered.     

Biomechanical evaluation of subcortical versus bicortical screw purchase in anterior cervical plating

Summary The purpose of this in vitro study is to compare the stabilities provided by anterior cervical H-plating with screws purchased either subcortically or bicortically on porcine cervical spines.Nine porcine cervical spines (C3–C4) were challenged by 12 Nm in extension followed by 6 Nm in flexion in 6 consecutive steps, i.e., (1) when disc was intact, (2) after discectomy. Subsequently, a tricortical bone graft was inserted to simulate interbody fusion. Each specimen was tested again (3) when plated with 16 mm screws to purchase subcortically and (4) after cyclic loading (f=0.5 Hz, n=1000), (5) when plated with 30 mm screws to purchase bicortically and (6) after cyclic loading. Neutral zone and range of motion were parameters normalized for comparison.The results showed comparable stability in constructs plated with screws purchased either subcortically or bicortically before cyclic loading. Cyclic loading deteriorated construct-bone relation in both groups, yet bicortically purchased screws rendered additional stability in anterior cervical plating.     

ACCF联合颈前路减压zero-p椎间植骨融合内固定术治疗多节段脊髓型颈椎病

目的探讨颈前路椎体次全切除减压融合术(ACCF)联合颈前路减压zero-p椎间植骨融合内固定术治疗多节段脊髓型颈椎病的临床疗效。方法回顾性分析自2016-05—2017-07采用ACCF联合颈前路减压zero-p椎间植骨融合内固定术治疗的30例多节段脊髓型颈椎病,比较术前、术后1周及末次随访时JOA评分、颈椎Cobb角、椎间隙高度。结果30例均顺利完成手术并获得完整随访,随访时间平均21.6个月,切口均一期愈合,植骨均骨性愈合,无内固定松动、移位、断裂、伤口感染、声音嘶哑及神经功能加重等并发症。术后1例出现脑脊液漏,2例出现吞咽不适,非手术治疗后均治愈。术后1周与末次随访时JOA评分、颈椎Cobb角、椎间隙高度较术前均明显改善,差异有统计学意义(P<0.05)。末次随访时根据JOA评分改善率评定综合疗效:优12例,良14例,可4例。结论ACCF联合颈前路减压zerop椎间植骨融合内固定术治疗多节段脊髓型颈椎病安全可靠,能够有效地恢复椎间隙高度和颈椎生理曲度。     

颈椎前路椎间盘切除融合术后颈椎矢状位参数变化及其对临床疗效的影响

目的 探讨颈椎间盘突出症病人行颈椎前路椎间盘切除融合术（anterior cervical discectomy and fusion, ACDF）后颈椎矢状位参数变化及其对临床疗效的影响。方法 选取2014年1月至2016年1月在我院接受ACDF手术治疗的颈椎间盘突出症病人98例,对其临床资料进行回顾性分析。其中,男50例,女48例;年龄为（54.75±8.60）岁（40~78岁）。收集比较98例病人术前及随访时的C_2~7 Cobb角、T₁倾斜角、C_2~7矢状面轴向距离（cSVA）、颈倾角（NTA）、胸廓入口角（TIA）等矢状位参数,以及其手术前后的颈肩臂疼痛视觉模拟量表（visual analogue scale, VAS）评分、日本骨科学会（Japanese Orthopaedic Association, JOA）评估治疗分数、颈椎功能障碍指数（neck disability index, NDI）。98例病人根据T₁倾斜角是否大于30°分为高T₁倾斜角组和低T₁倾斜角组,比较两组病人的JOA评分改善率及后凸畸形发生率。结果 本研究所观察的矢状位参数中,术后T₁倾斜角、C_2~7 Cobb角较术前显著增大,NTA、cSVA较术前显著减小;功能相关指标中,VAS评分较术前显著下降,JOA评分显著上升,与术前比较,差异均有统计学意义（P均＜0.05）。高T₁倾斜角组和低T₁倾斜角组的JOA治疗改善率（56.06% vs. 53.12%）及后凸畸形发生率（12.50% vs. 16.67%）比较,差异均有统计学意义（χ²=12.538,P=0.001;χ²=10.895,P=0.003）。且高T₁倾斜角组病人中,单节段、双节段、多节段病人的后凸畸形发生率均显著低于低T1倾斜角组,差异均有统计学意义（P均＜0.05）。结论 ACDF治疗颈椎间盘突出症的短期临床疗效确切,T₁倾斜角＞30°病人的JOA治疗改善率较高,后凸畸形发生率较低。     

The use of plate fixation in anterior surgery of the degenerative cervical spine: a comparative prospective clinical study

The method of anterior mono- or bisegmental cervical spine fusion is a well-established procedure for degenerative conditions of the cervical spine. While the early reports promote fusion with bone graft alone, recent studies report superior results with the addition of anterior plating. The objective of this study was to evaluate the influence of using plates in anterior cervical spine fusion in a prospective study. Fifty candidates for anterior monoor bisegmental cervical spine fusion were randomly and prospectively selected and assigned to a plated and a non-plated group. After a minimum follow-up of 22 months, patients were clinically and radiologically examined. The reduction in pain, improvement in neurology and functional assessment showed a significant improvement in both groups compared to the preoperative values. The total neurological score improved significantly in both groups, but the changes were greater in the group with plates. There was no significant difference between the groups for fusion rating, but graft quality (graft height) was significantly better in the plated group. We conclude that the overall data do not suggest better results with plating in mono- or bisegmental anterior spine fusions. Indications for additional internal fixation are restricted to special conditions with increased instability, insufficient bone quality or inappropriate graft placing.     

Adjacent segment disease after anterior cervical interbody fusion

BACKGROUND CONTEXT: There have been many follow-up studies on anterior interbody fusion for cervical nerve root and spinal cord compression, and excellent neurological outcomes have been reported. However, postoperative degenerative changes at adjacent discs may lead to the development of new radiculopathy or myelopathy. In the previous reports, the incidence of symptomatic adjacent segment disease has ranged from 7% to 15%. PURPOSE: The present study was undertaken to investigate the incidence of symptomatic adjacent segment disease after anterior cervical interbody fusion (ACIF) and to identify the factors that are related to the development of this disease. STUDY DESIGN/SETTING: This is a retrospective cohort study. PATIENT SAMPLE: A total of 112 patients were followed up clinically and radiologically for more than 2 years. OUTCOME MEASURES: Follow-up evaluation was primarily by means of clinical visits. The postoperative course of any symptoms, the findings of neurological examination and serial follow-up radiographs were performed in all patients. METHODS: The diagnosis of symptomatic adjacent segment disease was based on the presence of new radiculopathy or myelopathy symptoms referable to an adjacent level, and the presence of a compressive lesion at an adjacent level by magnetic resonance imaging or myelography. We evaluated the correlation between the incidence of symptomatic adjacent segment disease and the following clinical parameters (age at operation, sex, number of the levels fused) and radiological parameters (preoperative cervical spine alignment, preoperative range of motion of C2-C7 cervical spine, anteroposterior spinal canal diameter, preoperative existence of an adjacent segment degeneration on plain radiograph, myelography and magnetic resonance imaging [MRI]). RESULTS: Symptomatic adjacent segment disease developed in 19 of 112 patients (19%) followed. A Kaplan-Meier survival analysis was performed in order to follow the disease-free survival of the entire series of patients. The disease-free survival rates were 89% at 5 years, 84% at 10 years and 67% at 17 years. The incidences of indentation of dura matter on preoperative myelography or disc protrusion on MRI at the adjacent level were significantly higher in disease cases (p=.0087, .0299, respectively; chi-squared test). However, the other parameters did not show a statistically significant difference. There were seven cases (37%) who had failure of nonoperative treatment and additional operations were performed. CONCLUSIONS: The incidence of symptomatic adjacent segment disease after ACIF was higher when preoperative myelography or MRI revealed asymptomatic disc degeneration at that level regardless of the number of the levels fused, preoperative alignment, spinal canal diameter or fusion alignment.     

Autograft versus interbody fusion cage without plate fixation in the cervical spine: a randomized clinical study using radiostereometry

A primary object with a fusion cage is avoidance of graft collapse with subsequent subsidence and malalignment of the cervical spine that is observed after bone grafting alone. No randomized studies exist that demonstrate the difference between these two methods in terms of graft subsidence and angulation of the fused segment. The size of the study population was calculated to be 24 patients to reach a significant difference at the 95% CI level. Patients with one-level cervical radiculopathy scheduled for surgery were randomized to anterior discectomy and fusion (ACDF) with autograft or to fusion cage, both without plate fixation. Tantalum markers were inserted in the two adjacent vertebrae at the end of surgery. Radiostereometry was performed immediately postoperatively and at regular intervals for 2 years. Questionnaires were used to evaluate the clinical outcome and an unbiased observer graded the outcome after 2 years. No significant differences were found between the two methods after 2 years in regard of narrowing of the disc space (mean 1.7 and 1.4 mm, respectively) or deformation of the fused segment into flexion (mean 7.7° and 4.6°, respectively). Patients in the cage group had a significantly better clinical outcome. The findings of subsidence and flexion deformation of the fused segment after 2 years seem to be of no clinical importance after one-level cervical disc surgery. However, in multi-level surgery using the same methods, an additive effect of the deformations of the fused segments may affect the clinical outcome.     

两种颈前路减压融合术治疗两节段脊髓型颈椎病的疗效分析

目的:探讨颈前路椎间盘切除融合术(anterior cervical discectomy with fusion,ACDF)与颈前路椎体次全切减压融合术(anterior cervical corpectomy with fusion,ACCF)治疗相邻两节段脊髓型颈椎病的临床疗效。方法:对2016年1月至2017年12月收治的相邻两节段脊髓型颈椎病37例患者的临床资料进行回顾性分析,男15例,女22例,年龄43～69岁,平均54.6岁。根据手术方法的不同分为ACDF治疗组(A组,17例)和ACCF治疗组(B组,20例)。记录两组患者的手术时间、术中出血量,比较两组患者术前及术后1、12个月颈椎融合节段Cobb角、颈椎曲度,采用日本矫形外科协会(Japanese Orthopaedic Association,JOA)评分评价临床疗效,并观察两组术后并发症情况。结果:所有患者获得随访,时间12～24个月,平均18.5个月。手术时间、术中出血量A组分别为(106.3±22.6) min、(52.2±26.4) ml,B组分别为(115.6±16.8) min、(61.7±20.7) m...     

颈椎前路减压Inter Fix椎体间融合

目的 观察颈椎前路减压Inter Fix椎体间融合的稳定性及融合效果。方法 采用前路减压Inter Fix椎体间融合治疗颈椎间盘突出症27例,术后定期摄颈椎X线片检查,观察手术椎节的稳定性和融合情况。结果 随访7－19个月,术后次日即下床活动,手术节段稳定,术后3－4个月融合。结论 Inter Fix颈椎椎体间固定融合技术使施术椎节立即稳定,避免了自体植骨引起的并发症,可作为颈椎前路减压后椎体间融合的一种方法。     

Comparison between anterior cervical discectomy fusion and cervical corpectomy fusion using titanium cages for reconstruction: analysis of outcome and long-term follow-up

Retrospective comparative study of 80 consecutive patients treated with either anterior cervical discectomy fusion (ACDF) or anterior cervical corpectomy fusion (ACCF) for multi-level cervical spondylosis. To compare clinical outcome, fusion rates, and complications of anterior cervical reconstruction of multi-level ACDF and single-/multi-level ACCF performed using titanium mesh cages (TMCs) filled with autograft and anterior cervical plates (ACPs). Reconstruction of the cervical spine after discectomy or corpectomy with titanium cages filled with autograft has become an acceptable alternative to both allograft and autograft; however, there is no data comparing the outcome of multi-level ACDF and single-/multi-level ACCF using this reconstruction. We evaluated 80 consecutive patients who underwent surgery for the treatment of multi-level cervical spondylosis at our institution from 1998 to 2001. In this series, 42 patients underwent multi-level ACDF (Group 1) and 38 patients underwent ACCF (Group 2). Interbody TMCs and local autograft bone with ACPs were used in both procedures. Medical records were reviewed to assess outcome. Clinical outcome was measured by Odom’s criteria. Operative time and blood loss were noted. Radiographs were obtained at 6 and 12 weeks, 6 months, 1 year, and 2 years (if necessary). Early hardware failures and pseudarthroses were noted. Cervical sagittal curvature was measured by Ishihara’s index at 1 year. Group 1 had a mean age 46.2 years (range 35–60 years). Group 2 had a mean age 50.1 years (range 35–70 years).The operative time was significantly lower (P < 0.001) and blood loss significantly higher (P < 0.001) in Group 2 than in Group 1. At a minimum of 1 year follow up, patients in both groups had equivalent improvement in their clinical symptoms. The fusion rates for Group 1 were 97.6 and 92.1% for Group 2. The rates of early hardware failure were higher in Group 2 (2.6%) than in Group 1 (0%). The fusion rates for Group 1 were not significantly higher than Group 2 (P > 0.28). There was one patient in Group 1 and 2 patients in Group 2 with pseudarthroses. Complication rates in Group 2 were not significantly higher (P > 0.341). Cervical lordosis was well-maintained (80%) in both groups. Both multi-level ACDF and ACCF with anterior cervical reconstruction using TMC filled with autograft and ACP for treatment of multi-level cervical spondylosis have high fusion rates and good clinical outcome. However, there is a higher rate of early hardware failure and pseudarthroses after ACCF than ACDF. Hence, in the absence of specific pathology requiring removal of vertebral body, multi-level ACDF using interbody cages and autologous bone graft could result in lower morbidity.     

颈椎前路X形椎体次全切除融合内固定术治疗双节段颈椎病的疗效分析

目的：探讨颈椎前路X形椎体次全切除融合内固定术（anterior cervical X-shape-corpectomy and fusion,ACXF）治疗双节段颈椎病的临床疗效。方法：回顾性分析2019年1月～2020年12月间在我院骨科行ACXF治疗的双节段颈椎病患者的临床资料,并与同期行颈椎前路椎体次全切除融合固定术（anterior cervical corpectomy and fusion,ACCF）治疗的双节段颈椎病患者进行比较。收集两组患者的基线信息、手术时间、出血量及住院时间,术前和术后即刻、3个月、6个月及1年时行日本骨科学会（Japanese Orthopaedic Association,JOA）评分、疼痛视觉模拟评分（visual analogue scale,VAS）,术前和术后3个月、术后6个月及术后1年行颈椎功能障碍指数（neck disability index,NDI）评估;测量ACXF组术中前方截骨距离以及两组患者术前和术后不同随访时间点的颈椎整体曲度、手术节段脊柱功能单位（functional spine unit,FSU）活动度及高度、后方减...     

Efficacy of multilevel anterior cervical discectomy and fusion versus corpectomy and fusion for multilevel cervical spondylotic myelopathy: a minimum 5-year follow-up study

Purpose

We evaluated radiologic and clinical outcomes to compare the efficacy of anterior cervical discectomy and fusion (ACDF) and anterior corpectomy and fusion (ACCF) for multilevel cervical spondylotic myelopathy (CSM).

Methods

A total of 40 patients who underwent ACDF or ACCF for multilevel CSM were divided into two groups. Group A (n = 25) underwent ACDF and group B (n = 15) ACCF. Clinical outcomes (JOA and VAS scores), perioperative parameters (length of hospital stay, blood loss, operation time), radiological parameters (fusion rate, segmental height, cervical lordosis), and complications were compared.

Results

Both group A and group B demonstrated significant increases in JOA scores and significant decreases in VAS. Patients who underwent ACDF experienced significantly shorter hospital stays (p = 0.031), less blood loss (p = 0.001), and shorter operation times (p = 0.024). Both groups showed significant increases in postoperative cervical lordosis and achieved satisfactory fusion rates (88.0 and 93.3 %, respectively). There were no significant differences in the incidence of complications among the groups.

Conclusions

Both ACDF and ACCF provide satisfactory clinical outcomes and fusion rates for multilevel CSM. However, multilevel ACDF is associated with better radiologic parameters, shorter hospital stays, less blood loss, and shorter operative times.     

颈椎前路手术对脊髓型颈椎病患者椎间盘组织中炎性细胞因子的影响

目的 探讨颈椎前路手术对脊髓型颈椎病(CSM)患者椎间盘组织中炎性细胞因子的影响.方法 35例脊髓型颈椎病患者(CSM组)和30例颈椎外伤患者(对照组)均行颈椎前路手术治疗,观察治疗效果.采用固相分离放射免疫分析法(SPRIA)测定两组颈椎间盘组织中白细胞介素(IL)-6、IL-8、肿瘤坏死因子(TNF)－α水平.结果病程≤6个月组优良率为81.8％,病程＞6个月组优良率为38.5％,两组优良率比较差异有统计学意义(P＜0.05);CSM患者术前JOA评分为(9.73±2.12)分,术后JOA评分为(14.21±2.52)分,术后JOA评分显著高于术前(P＜0.05);CSM组颈椎间盘中IL-6、IL-8、TNF-α水平均显著高于对照组(P＜0.05).结论 颈椎前路手术是治疗CSM的一种较有效手术方法;IL-6、IL-8、TNF-α在颈椎间盘退变和CSM发病中起重要作用.