Syringomyelia after operation： diagnosis and its formational mechanism

Objective： To describe the MRI findings and discuss the pathogenesis formation mechanism of syringomyelia in the patients after spine surgical operation. Methods： Totally 13 patients were been enrolled in the study. Before operation, none of our patients presented with spinal cord syringomyelia. The mean follow-up duration was 6 years （range 2-10 months） by MRI. Four of the 13 patients after spinal cord tumor removed operation, 3 patients after spinal trauma operation, 2 cases had scoliosis before, 2 cases were cervical spondylotic myelopathy and 2 cases had tethered cord syndrome before operation. MR features of pre- and post-operation on all patients were been studied in contrast with surgical results and clinical symptoms. The radiology diagnostic was made by 3 different radiologists respectively. The characteristics of length, width, signals, shape of cavity and spinal cord position as well as subarachnoid shape were focused on. Results： All the patients had no syringomyelia on MRI before operation. The spinal cord of 7 patients showed persist compression and 2 patients had tethered cord before operation. MRI features of syringomyelia after operation in our cases showed longitudinal cavity with syrinx fluid had T1 and T2 relation characteristics of cerebrospinal fluid （CSF）. The mean length was 5.5 spinal segment, 4 cord of 13 patients presented cord compressed from anterior materials, 4 occurred postoperative adhesion to the back of lumbar spinal canal and spinal cord of 1 cases clung to the front wall of cervical spinal canal. Conclusion： The mechanism of syringomyelia in the patients after spinal surgical intervention may be the persisting compression or intention of the spinal cord in the period of pre- or post-operation. The edema, cyst, malacia of spinal cord are the most important lesions and risk factors resulted in the syringomyelia.     

Application of anterior decompression and reconstruction using titanium mesh with locking plates in the management of cervical spondylotic myelopathy

Objective:To observe the clinical effect of anterior decompression and reconstruction using titanium mesh with locking plates in the treatment of cervical spondylotic myelopathy. Methods:One hundred and twenty patients with cervical spondylotic myelopathy were treated by anterior decompression and reconstruction using titanium mesh with locking plates. There were 66 men and 54 women ranges in age from 37 to 72 Years(mean age, 58.3 years). The mean Japanese orthopedic surgery association(JOA) scale was 9.6 points before operation. Patients were followed up clinically and radiographically. Results:Having stood surgery well, the operation time ranged between 60~100 min and bleeding during operation ranged between 20~200 ml. There were no case of postoperative infection, recurrent laryngeal nerve palsy, or esophageal or tracheal laceration or rupture. The average follow-up period was 14.3 months(range, 12 to 24 months) in 96 who were followed up. At the last follow-up visit the mean JOA scale had improved to 14.4 points, reflecting an improve-ment of 4.8 points. The results were considered to be excellent in 87 patients, good in 25, fair in 6, and poor in 2. No hardware-related complications or adjacent segment degenerative changes were encountered during the follow-up periods. Stable bone union was observed in all cases and the average time required for fusion was 5.7 months. Conclusion:Titanium mesh filled with autologous bone graft can avoid the complications associated with harvesting bone from the iliac crest donor site. When combined with cervical anterior locking plate, it can obtain satisfatory clinical results for the treatment of cervical spondylotic myelopathy.     

SELECTION OF SURGICAL APPROACH TO TREAT TRAUMATIC INSTABILITY OF SUBAXIAL CERVICAL SPINE

Objective To evaluate the clinical outcomes of surgical therapy in treating traumatic instability of subaxial cervical spine through either anterior or posterior approach. Methods According to the A llen-Fergurson＇s classification, we retrospectively studied 42 cases of traumatic instability of subaxial cervical spine through either anterior or posterior surgical reconstruction. Patients requiring approach for either reduction or decompression were not included. Results The average follow-up interval was 3 years and 2 months. The anterior and posterior reconstructions were 24 and 18 cases, respectively. Before operation, the average scores of JOA and VAS were： 12.1 and 6. 9 for anterior group, and 12.3 and 7. 2 for posterior group. At the final assement, the scores of JOA and VAS improved to 16. 0 and 2.2 for anterior group, and 15. 7 and 2.6 for posterior group. The average ASIA motor scores of anterior and posterior group improved to 68. 2 and 65. 5 at the final follow-up from 58.4 and 59. 7 before operation, respectively. The ASIA grade （A-E） was converted to a numeric score. The average scores before operation in the anterior and posterior group were 3.3 and 3.4, and increased to 3.8 and 3. 7 at the final follow-up. After operation, there were different extent improvements of average radiological parameter, such as Cobb angle, vertebral body translation and disc height ratio. The average operation time and blood losing were 122 min and 125 mL for anterior group, and 153 min and 287 mL for posterior group. Fusion was achieved in all patients and 4 and 2 complications occurred at the anterior or posterior group. Conclusion The results showed that there were no obvious difference in parameters, such as neurological assements, functional grades, fusion rate, operation time and blood losing, between anterior and posterior group, except the virtues of anterior group in reconstruction and maintaining physiologic cervical lordosis and intervertrbal disc height occurred.     

Efficacy of Spinal Pia Mater Incision and Laminoplasty Combined with Internal Fixation for Old Spinal Cord Injury

Objective To evaluate the clinical efficacy of incising spinal pia mater to relieve pressure and unilateral open-door laminoplasty with internal screw fixation for treatment of the dated spinal cord injury. Methods From March, 2009 to July, 2010, 16 cases with chronic cervical cord injury underwent spinal dura mater incision and unilateral open-door laminoplasty with internal screw fixation. Nerve functions of preand postoperation were evaluated by Frankel classification and the Japanese Orthopaedic Association (JOA) scale. The improvement rate of JOA score at the indicated time was recorded. Results Postoperative Frankel classification rating of 16 patients improved obviously. JOA scores at the 1st month, 3rd month, 6th month, and 12th month after surgery were 7.9±2.3, 8.5±1.6, 8.9±2.1, and 12.4±2.5, respectively, and significantly increased compared with that prior to surgery (5.5±0.6). At the end of follow-up period, JOA score was significantly higher than that of pre-treatment (P<0.05). The recovery was relatively rapid during the first 3 months following the surgery, then entered a platform period. Conclusion It is effective for patients with dated spinal cord injury to undergo spinal decompression and laminoplasty.     

Multilevel cervical spondylotic myelopathy treated by anterior cervical decompression in subsection and autograft fusion

Objective：To investigate a novel surgical method for multilevel cervical spondylotic myelopathy （CSM）. Methods： Totally 21 patients with multilevel CSM undergoing a novel surgical procedure from April 2001 to January 2004 were analyzed retrospectively. All patients experienced anterior cervical decompression surgery in subsection, autograft fusion and internal fixation. Preoperative, immediate postoperative and follow-up image data, X-rays and semi-quantitative Japanese orthopaedics association （JOA） scores were used to evaluate the restoration of lordosis （Cobb＇s angle）, intervertebral heights, the stability of the cervical spine and the improvement of neurological impairment. Results： Preoperative symptoms were markedly alleviated or disappeared in most of the patients. According to the JOA scores, the ratio of improvement in neurological function was 72. 2%, including excellent in 9 cases （42.9%）, good in 7 cases （33.3%）, fair in 3 cases （14.3%） and poor in 2 cases （9.5%）. Immediate postoperative X-rays showed obvious improvements in lordosis and in the intervertebral height of the cervical spine （P〈0. 01）. There is no evidence of instrument failure during the mean follow-up period of 14. 2 months （9-24 months, P〉0. 01）. Conclusion：Anterior cervical decompression in subsection, autograft fusion and internal fixation is a rational effective method for the surgical treatment of multilevel CSM.     

Influence of developmental cervical stenosis on dural sac space

Background This retrospective study aimed to investigate the difference of the intra-dural reserving space for spinal cord in magnetic resonance imaging （MRI） between patients with and without developmental cervical stenosis and its clinical significance.Methods A total of 264 patients with cervical spondylotic myelopathy who had decompression surgeries were recruited.The average follow-up was 29 months.Based on their lateral radiographs,they were divided into stenosis group and non-stenosis group.On the magnetic resonance images,the ratio of the sagittal diameter of the dural sac to that of the vertebral body was measured and calculated as MRI Pavlov ratio at the mid-vertebral level on T2-weighted sagittal images from C3 to C7.The ratio of the transverse area of the spinal cord to that of the dural sac was measured and calculated as occupation ratio on T2-weighted axial images at the same levels.The MRI Pavlov ratio and occupation ratio were compared between the two groups.The stenosis group was further divided into space-reserving and non-space-reserving subgroups based on the occupation ratios; then clinical parameters were compared between the two subgroups to determine the clinical significance of the reserving space.Results The MRI Pavlov ratio of the stenosis group was significantly smaller than that of the non-stenosis group at C3-C7 （P ＜0.01）,while the occupation ratio was significantly larger only at C7 （P ＜0.05）.For the space-reserving subgroup,the postoperative recovery rate was lower （P ＜0.05）.The postoperative recovery rate was （23±6）％ in anterior approach,larger than （-23±15）％ in posterior approach （P ＜0.05）.Conclusions Developmental cervical stenosis is associated with a smaller sagittal diameter of the dural sac,but does not lead to a significant decrease in intra-dural space available for the cord.For patients with normal intra-dural space,the recovery after anterior decompression surgery was better than posterior approach.     

Follow-up Study on the Motion Range after Treatment of Degenerative Disc Disease with the Bryan Cervical Disc Prosthesis

This study examined effect of a new intervertebral cervical disc prosthesis in relieving the neurological symptoms and signs, improving the patients' ability to perform daily activities, reducing pain, and maintaining the stability and segmental motion. From December 2003 to October 2004, 12 patients, who had received 14 replacements of cervical artificial discs, were followed-up for 2 to 8 months (with a mean of 5.2 months). Of them 5 had cervical spondylotic myelopathy and 7 had cer- vical disc herniation. The patients included 7 males and 5 females, with their age ranging from 35 to 62 y and a mean of 50.3 y. Single-level replacements were performed in 10 cases and 2 cases re- ceived two-level replacement. Operation time of the single-level surgery averaged 130±50 min and the time of two-level surgery was 165±53 min on average (from skin incision to skin suturing). Neurological or vascular complications during or after surgery was not observed. Japanese Orthope- dic Association scores (JOA scores) increased from 8.6 to 15.8 on average. There was no prothesis subsidence or excursion. Replaced segments were stable and the range of motion was partially re- stored, being 4.68° (3.6°-6.1°) in flexion and extension position and 3.51° (2.5°-4.6°), 3.42° (2.6° -4.3°) in left and right bending position. No obvious loss of physiological curvature was noted. CT or MRI follow-up showed that excursion was less than 1.5 mm) in 2 of 14 levels and between 1.5 mm and 3 mm) in 1 of 14 levels. No ossification in the replaced levels was observed. It is concluded that satisfactory short-term results were achieved in the 12 cases of artificial disc replacements. Different from anterior cervical discectomy and fusion, the replacement could achieve quick functional recov- ery and did not lead to the movement limitation of cervical vertebrae. At least a 5-years follow-up was needed to assess the long-term effect of the prosthesis on its neighboring segments.     

Stereotactic microelectrode-guided postero-ventral pallidotomy for Parkinson '''' s disease

Objective To assess postoperative effects of microelectrode-guided postoventral pallidotomy (PVP) for Parkinson ' s disease. Methods Intraoperative microelectrode recordings and microstimulation were used to explore the globus pallidus to performance of posteroventral pallidotomy in 48 patients with Parkinson's disease (47 unilateral and 1 bilateral). Assessment was made at baseline preoperatively and at 6 months intervals postoperatively, with unified Parkinson' s disease rating scale (UPDRS). Results All patients were significantly improved on the limbs contralateral to the lesion side 6-34 months after operation ( mean 24 months). The improvement was seen in the 'on' or 'off state:UPDRS scores with patients on levodopa were improved by an average of 28. 7 % , while off medication scores showed reductions (47.6% ) at 24 months. There were no deaths and no visual complications,but there were 4 patients (8. 3%) of a delayed contralateral limbs dystonia after pallidotomy. Conclusion The techniques of micr     

Diagnosis and treatment of cavernous sinus neurinoma

Objective To study the diagnosis and microneuro-smgical treatment of cavernous sinus neurinoma. Methods Twenty-two patients with cavernous sinus neurinoma which had diagnosed by MRI were operated on by microsurgery. Fourteen patients received excision of tumor through frontotemporal approach with zygomatic osteotomy and, 8 patients via subtemporal and suboccipital transtentorial approaches. Results Total resection was achieved in 21 patients (95.5%),and subtotal resection in 1.There was no operative death. The all operative samples were confirmed neurinoma pathohistologically. The symptoms postoperation such as headache and exophthalmos were reduced. Three months after operation, the function of the 6th nerve was improved in 12 of 19 patients with paresis of the 6th nerve. One patient with hemiplegia recovered well. The function of the 3th nerve recovered in 4 of 6 patients with recurrent paresis of the 3th nerve. Those patients with hydrocephalus were improved after operation. The patients were follow     

Correlation between magnetic resonance T2 image signal intensity ratio and cell apoptosis in a rabbit spinal cord cervical myelopathy model

Background Cervical spondylotic myelopathy （CSM） is a common cause of disability in elderly patients.Previous studies have shown that spinal cord cell apoptosis due to spinal cord compression plays an important role in the pathology of myelopathy.Although changes in magnetic resonance imaging （MRI） T2 signal intensity ratio （SIR） are considered to be an indicator of CSM,little information is published supporting the correlation between changes in MRI signal and pathological changes.This study aims to testify the correlation between MRI T2 SIR changes and cell apoptosis using a CSM animal model.Methods Forty-eight rabbits were randomly assigned to four groups：one control group and three experimental chronic compression groups,with each group containing 12 animals.Chronic compression of the cervical spinal cord was implemented in the experimental groups by implanting a screw in the C3 vertebra.The control group underwent sham surgery.Experimental groups were observed for 3,6,or 9 months after surgery.MRI T2-weighted SIR Tarlov motor scores and cortical somatosensory-evoked potentials （CSEPs） were periodically monitored.At each time point,rabbits from one group were sacrificed to determine the level of apoptosis by histology （n=6） and Western blotting （n=6）.Results Tarlov motor scores in the compression groups were lower at all time points than the control group scores,with the lowest score at 9 months （P ＜0.001）.Electrophysiological testing showed a significantly prolonged latency in CSEP in the compression groups compared with the control group.All rabbits in the compression groups showed higher MRI T2 SIR in the injury epicenter compared with controls,and higher SIR was also found at 9 months compared with 3 or 6 months.Histological analysis showed significant apoptosis in the spinal cord tissue in the compression groups,but not in the control group.There were significant differences in apoptosis degree over time （P ＜0.001）,with the 9-month group displaying the most severe spinal cord apoptosis.Spearman＇s rank correlation test showed that there was close relation between MRI SIR and degree of caspase-3 expression in Western blotting （r=0.824.P ＜0.001）.Conclusions Clear apoptosis of spinal cord tissue was observed during chronic focal spinal compression.Changes in MRI T2 SIR mav be related to the severity of the apoptosis in cervical spinal cord.     

钢缆式线锯及人工骨间隔物在颈椎管扩大成形术中的应用

目的 探讨使用钢缆式线锯(T—Saw线锯)及人工骨CHA作间隔物行颈椎棘突纵割式椎管扩大成形术的优点及疗效。方法 对北京积水潭医院脊柱外科31例多节段髓型颈椎病,5例颈椎后纵韧带骨化症(OPLL),2例前路术后疗效差的患者采用特制线锯纵割棘突和HA人工骨替代髂骨作椎管后壁间隔物,行棘突纵割式椎管扩大成形术,采用JOA评分法对疗效进行评估。结果 对38例患者术后随访,平均随访时间26月。肢体麻木,肌力减退及行走不稳均有明显改善,术后扁平率改善0．23,人工骨间隔物愈合率74％,无一例发生颈髓损伤。平均手术时间2h 50min;术中平均出血量280ml,平均JOA改善率61％。结论 使用T—Saw线锯及HA人工骨作间隔物行颈椎棘突纵割式柞管扩大成形术操作快捷安全,减压充分,术后改善率高,是颈椎管扩大成形术中的合理方法。     

前后路联合手术治疗重度脊髓型颈椎病 80 例临床研究

目的 探讨采用前后路联合手术治疗重度脊髓型颈椎病的临床研究.方法 采用颈椎前路脊髓减压取髂骨植骨钢板螺钉内固定合并颈后路单开门椎管扩大成形脊髓减压钢板螺钉内固定的术式治疗重度脊髓型颈椎病80例.手术疗效采用日本矫形外科学会标准评分.结果 术后随访12～24个月,术后平均提高4～7分,65例患者四肢麻木消失,束带感基本消失.结论 Ⅰ期前后路联合手术治疗重度脊髓型颈椎病,解除了来自前后方对脊髓的压迫,彻底减压,脊髓血供可得到提高和改善,有利于脊髓神经功能恢复,而且患者治疗周期短,疗效可靠,复发率低.     

颈椎疾病患者术前高压氧预处理对神经功能恢复的影响

目的探讨颈椎疾病患者术前高压氧预处理对神经功能恢复的影响。方法选取2010年7月～2011年8月长征医院闸北分院确诊为脊髓型颈椎病并且具有脊髓压迫症患者80例作为研究对象,随机分为治疗组与对照组,每组各40例,治疗组在术前1周开始进行高压氧预处理,对照组不进行高压氧预处理,比较两组入院时、术前、术后3 d、术后6个月时日本骨科协会评估治疗分数（JOA）评分及术后改善率、尺神经体感诱发电位（SEP）N1、P1波变化。结果两组患者入院时及术前JOA评分差异无统计学意义（P〉0.05）,治疗组术后3 d、术后6个月JOA评分、改善率明显较对照组高,JOA评分及改善率组间比较差异有统计学意义（P〈0.05）;两组患者术后3 d、术后6个月时的N1、P1波比较,两组差异有统计学意义（P〈0.05）。结论对脊髓型颈椎病患者术前进行高压氧预处理治疗,能促进患者术后神经功能恢复。     

DTI技术与常规MRI在脊髓型颈椎病观察脊髓损伤中的对比研究

目的通过比较常规MRI及DTI,评价脊髓型颈椎病的脊髓损伤,探讨DTI对检测脊髓型颈椎病(CSM)脊髓损伤的价值。材料与方法使用GE Signa Hde 1.5T超导型磁共振仪,对40例健康志愿者和60例脊髓型颈椎病患者进行常规MRI及DTI检查。根据T2WI图像颈髓病变区信号不同,将CSM患者分为颈髓病变区高信号组(C组,13例)和等信号组(B组,47例),正常对照组(A组,40例)。观察常规T2WI图,测量DTI不同参数值,比较不同组别ADC值和FA值的变化。结果常规T2WI等信号患者(B组),虽然常规T2WI没有显示出病变脊髓异常信号改变,但是DTI参数值出现变化,FA值降低,提示病变脊髓各向异性减低;ADC值升高,反映各向同性增高。常规T2WI高信号患者(C组),FA值进一步减低,脊髓出现不均淡黄色信号。ADC值、FA值在A,B,C组中均有统计学意义(表1),ADC值在A组、B组、C组中呈逐渐升高变化,反映脊髓各向同性逐渐升高;RA值在A组、B组、C组中呈逐渐降低变化,反映脊髓各向异性逐渐降低。结论通过脊髓型颈椎病两组的研究,显示DTI能在常规T2WI尚未出现异常信号之前既能检测颈髓的较为早期的损伤,DTI较常规MRI检测脊髓慢性损伤更敏感,DTI能更早、更精确地发现脊髓型颈椎病的脊髓病变,有助于临床医生选择最佳的治疗方法,同时可以为手术治疗赢得时间。DTI量化参数可以定量评估脊髓损伤程度,使脊髓损伤的诊断更为准确。     

颈椎后路单开门椎管扩大成形联合微型钛板固定术治疗多节段脊髓型颈椎病

目的：探讨单开门椎管扩大成形联合微型钛板固定术治疗多节段脊髓型颈椎病疗多节段脊髓型颈椎病的临床效果。方法：回顾性分析本院2009年7月～2012年12月21例多节段脊髓型颈椎病患者,均采用颈椎后路单开门椎管扩大成形联合微型钛板固定术治疗;年龄47～68岁,平均年龄55．3岁;术前及术后末次随访时对患者脊髓功能进行日本整形外科学会（ Jap-anese Orthopaedic Association ,JOA）评分,以JOA评分改善率评价术后神经功能改善情况;术后对轴性疼痛采用VAS评分;末次随访时行X线片和MRI检查评价内固定位置及脊髓受压改善情况。结果：21例患者手术后随访12～24个月,平均15．8个月。术后神经功能明显改善,JOA评分由术前的8．3±2．2分提高到末次随访的14．3±1．7分（P＜0．01）,平均改善率为69．0％;颈部轴性疼痛2例,发生率为9．52％,末次随访时VAS评分平均为2．13±0．33;末次随访时行X线片和MRI检查示微型钛板位置良好,未见松动及断裂,无再关门现象发生。结论：单开门椎管扩大成形联合微型钛板固定术治疗多节段脊髓型颈椎病效果满意,具有操作简便、固定牢靠、并发症少的优点。     

椎管扩大成形术后颈椎后纵韧带骨化进展的再手术治疗

目的：回顾分析北京大学第三医院骨科颈椎后纵韧带骨化后路手术后,后纵韧带骨化进展导致颈脊髓病需再次手术的患者资料,通过总结颈椎后纵韧带骨化进展的再次手术治疗策略及其疗效,为颈椎后纵韧带骨化术后进展的再次外科治疗提供一定的临床参考。方法：在2006年5月至2012年7月住院的颈椎后纵韧带骨化患者中,选取既往因后纵韧带骨化行单开门椎管扩大成形术的17例患者作为研究对象。再次手术依据患者的临床表现结合影像学检查确定责任节段及手术入路,采用前方入路减压者12例,采用后方入路扩大减压者5例。采取日本骨科协会（Japanese Orthopedic Association, JOA）评分评价患者术前及术后的脊髓功能。将患者年龄,性别,术前症状持续时间,脊髓高信号,是否伴随高血压、糖尿病等临床因素与术前JOA评分及术后JOA改善率进行相关性分析;手术前、后的JOA评分比较采用重复测量ANOVA方差分析;手术前、后的JOA改善率比较采用配对t检验。结果：随访时间60~348个月,平均137.5个月。手术均顺利完成,首次手术和再次后路手术各发生C5神经根麻痹1例。再次手术时,前路手术有2例、后路有1例发生硬膜撕裂致脑脊液漏,无感染发生。不同临床因素与术前JOA评分及JOA改善率无显著相关性。首次椎管扩大椎板成形术后,患者的JOA评分从术前9.4±4.1升高到12.8±2.8,有显著改善（P<0.01）,后纵韧带骨化进展导致颈脊髓病后又出现下降,再次手术后较术前神经功能显著改善（P<0.05）。再次手术的远期改善率较第一次术后的首次改善率和再次手术后6个月的改善率差异有统计学意义（P<0.01）。结论：根据后纵韧带骨化进展后的临床表现及影像学的改变制定的再次手术减压策略,能显著改善后纵韧带骨化进展导致的脊髓功能损害。     

椎间撑开前路减压植骨钢板内固定治疗脊髓型颈椎病

目的探讨脊髓型颈椎病行椎间撑开前路减压植骨钢板内固定的疗效。方法选择2004-01～2008-06收治的36例脊髓型颈椎病,其中单节段病变30例,两节节段病变6例,都有不同程度的脊髓神经损伤。所有患者进行椎间撑开前路矩形减压植骨钢板内固定术,比较术前术后病变椎间隙高度和脊髓功能,采用日本骨科学会（JOA）的评分标准对疗效进行评价。结果36例获得随访6—12个月,平均9个月,无颈髓和喉上喉返神经损伤,无钢板和螺钉松动及椎前血肿等并发症发生。术前与术后、术前与术后6个月以及术后与术后6个月的JOA评分及椎间隙高度比较差异均有统计学意义（P均〈0．01）。术后6个月明显改善脊髓神经功能,基本维持椎间隙高度和颈椎生理曲度。结论椎间撑开前路矩形减压植骨钢板手术减压较彻底,能有效维持椎间高度和稳固固定,减少邻近椎体退变,是目前两节段以内脊髓型颈椎病较常用、疗效可靠的治疗方法。     

多节段前路减压植骨融合并钢板内固定术治疗脊髓型颈椎病

目的 探讨多节段前路减压植骨融合钢板内固定术在脊髓型颈椎病中的应用价值。方法 38例脊髓型颈椎病患者，病变累及3个椎间隙者34例，4个椎间隙者4例。经颈前路椎体次全切除减压，取自体髂骨植骨融合，并行颈前路钢板固定。结果 术中硬膜撕裂2例，术后咽痛6例。38例随访平均22．5个月，植骨于术后12～28周骨性愈合。术后恢复之椎间高度未发生再丢失现象，颈椎生理曲度维持良好。螺钉松动、钢板翘起3例。无钢板、螺钉折断等并发症。JOA评分平均提高8．4分，手术有效率为94．7％，优良率为78．9％。结论 多节段前路减压植骨钢板内固定治疗脊髓型颈椎病能实现彻底减压，对脊髓功能恢复有重要意义。     

颈椎后路单开门微型钛板固定成形术治疗多节段颈椎病43例疗效观察

目的评估颈椎后路单开门微型钛板固定椎板成形术治疗多节段颈椎病的临床应用价值。方法回顾性分析2011年1月至2012年9月在我科行颈椎后路单开门微型钛板固定椎板成形术的多节段脊髓型颈椎病患者43例,记录手术时间、术中出血量、JOA评分改善率、术后轴性症状发生率及严重程度;同时在随访的影像资料上测量术后脊髓后移距离、颈椎曲度指数改变及丢失程度、术后椎管扩大率及椎板开门角度。结果平均手术时间（107.1±16.3）min,术中平均出血量（200.0±28.7）ml,椎板开门角度为（48.0±3.1）°。术后椎管扩大率为（69.7±13.5）%;颈椎曲度指数较术前明显减少（P〈0.01）,丢失程度为（3.4±2.7）%;平均脊髓后移距离为（3.1±0.7）mm;术后JOA评分较术前明显增加（P〈0.01）。JOA评分改善率与脊髓后移距离无明显相关性（r=0.161,P=0.301）。结论颈椎后路单开门微型钛板固定椎板成形术治疗多节段颈椎病操作简单,安全可靠,可避免开门后再关门;并可获得手术后即刻的稳定性,减少术后颈椎曲度的丢失和后凸畸形的发生率,术后神经功能恢复明显,是一种治疗多节段颈椎病的有效方法。     

后路钉棒技术治疗无骨折脱位型颈脊髓损伤

目的：评估无骨折脱位型颈脊髓损伤后路钉棒技术治疗效果。方法：应用后路钉棒技术治疗38例无骨折脱住型颈脊髓损伤病人，比较手术治疗前后及随访时JOA评分变化。结果：本组病例手术后未见严重并发症；术后JOA评分平均增加了4．1（3～12）分，随访4，12，24周JOA评分平均增加了6．7，7．8，8．1分；1例在术后1年神经功能仍有改善。结论：后路钉棒技术治疗无骨折脱住型颈脊髓损伤可取得良好疗效。