AIM:To evaluate the methods and results of the AXIS lateral mass screw plate system in the treating of lower cervical spine injury.METHODS:29 cases of lower cervical vertebrae injury were fixed with AXIS system.All of...AIM:To evaluate the methods and results of the AXIS lateral mass screw plate system in the treating of lower cervical spine injury.METHODS:29 cases of lower cervical vertebrae injury were fixed with AXIS system.All of them were followed up for more than 1 year.RESULTS:All cases had a good bone union without malformation.We found no complication of the injury to the vertebral arteries or nerves.There was no loosening of the plate and screw. CONCLUSION:AXIS lateral mass screw plate system has the characteristic of stable,simple and safe and is suitable for the treatment of lower cervical spine injury.展开更多
AIM:To explore the long term therapeutic effects of surgical treatment for isthmic spondylolisthesis.METHODS:42 cases of isthmic spondylolisthesis were analyzed retrospectively among which 13 cases underwent simple lu...AIM:To explore the long term therapeutic effects of surgical treatment for isthmic spondylolisthesis.METHODS:42 cases of isthmic spondylolisthesis were analyzed retrospectively among which 13 cases underwent simple lumbar interlaminar bone implant and 29 cases underwent transpedicular fixation combined with bone implantation.Assessment was made according to JOA standards before and after treatment.RESULTS:At a 3 years of follow up assessment,the functional outcome in transpedicular fixation assessed by JOA was excellent and good in 79.3%as compared with the group without fixation in which the excellent and good result was 76.9%.The level of pain and functional disability were similar in the two groups,but fusion rate in the group with transpedicular fixation was higher than that in group without it.CONCLUSION:Surgical treatment for isthmic spondylolisthesis improves function and relieves pain.展开更多
Objective To study the effect of using improved 2D computer-assisted fluoroscopic navigation through simulating 3D vertebrae image to guide pedicle screw internal fixation.Methods Posterior pedicle screw internal fixa...Objective To study the effect of using improved 2D computer-assisted fluoroscopic navigation through simulating 3D vertebrae image to guide pedicle screw internal fixation.Methods Posterior pedicle screw internal fixation,distraction展开更多
Objective： To study the biomechanical feature of a newly designed cervical vertebra internal fixation device and its clinical applications. Methods： Some functional spinal units were fixed respectively with titanium...Objective： To study the biomechanical feature of a newly designed cervical vertebra internal fixation device and its clinical applications. Methods： Some functional spinal units were fixed respectively with titanium plate, fusion cage and new device designed by ourselves, then a controlled biomechanical study including flexion, extension, torsion and lateral bending was performed and the results were analyzed. Results： As to the mechanical performance, fusion cage showed poor performance in extension test and so did the titanium plate in the distortion test. However, the new device showed good performance in every test. Conclusion： Both simple titanium plate fixation and simple fusion cage fixation have biomechanical defaults, but they are complementary. The titanium plate-interbody fusion cage avoids the defaults and has specific advantages.展开更多
Objective To evaluate the outcome of two methods for stabilization and fusion: posterolateral fusion and circumferential fusion involving posterior lumbar interbody fusion for lumbar stenosis with Grades 1 and 2 lumba...Objective To evaluate the outcome of two methods for stabilization and fusion: posterolateral fusion and circumferential fusion involving posterior lumbar interbody fusion for lumbar stenosis with Grades 1 and 2 lumbar spondylolisthesis.Methods From April 1998 to April 2003, 45 patients suffering from lumbar stenosis with low degree lumbar spondylolisthesis treated in our hospital were retrospectively reviewed and assigned to two groups.Among them, 24 patients (group A) were treated with instrumented posterolateral fusion and 21 patients (group B) with instrumented circumferential fusion.The two groups were compared for clinical and radiological outcomes.Results All patients were followed up for 12 to 72 months.In group A, results showed preoperative clinical symptoms disappeared completely in 12 of 24 patients, and pain relief was seen in 91.7% (22/24).Two cases suffered from residual symptoms.Twenty-two cases obtained complete reduction of olisthy vertebral bodies, and anatomical reduction rate was 91.7%.No infection or neurological complication occurred in this group.In group B, results showed preoperative clinical symptoms disappeared completely in 13 of 21 patients, and pain relief was seen in 90.5% (19/21).One case suffered from residual symptoms.Twenty cases obtained complete reduction of the olisthy vertebral bodies, and anatomical reduction rate was 95.2%.Four cases of infection or neurological complication occurred in this group.Both groups indicated no significant difference in clinical outcomes and anatomical reduction rate during follow-up.But group A had better intraoperative circumstances and postoperative outcome than group B, while group B had better postoperative parameters in X-ray of Angle of Slipping and Disc Index than group A.Conclusions The first choice of surgical method for lumbar stenosis with low degree lumbar spondylolisthesis is instrumented posterolateral fusion.Only when patients suffer from severe preoperative disc degeneration and low back pain or intervertebral instability should we consider indications for additional use of CAGE.展开更多
目的探讨Bioflex系统治疗腰椎椎间盘退行性疾病的临床疗效。方法2007年3月～2009年4月，行椎管减压、椎间融合（视椎间盘退变程度而定）联合Bioflex系统治疗腰椎椎间盘退行性疾病患者19例。记录视觉模拟评分（visual analog scale，VAS...目的探讨Bioflex系统治疗腰椎椎间盘退行性疾病的临床疗效。方法2007年3月～2009年4月，行椎管减压、椎间融合（视椎间盘退变程度而定）联合Bioflex系统治疗腰椎椎间盘退行性疾病患者19例。记录视觉模拟评分（visual analog scale，VAS）、Oswestry功能障碍指数（Oswestry disability index，ODI）、节段活动范围（range of motion，ROM）及融合情况。结果患者均获随访，随访时间为9—25个月，平均16．8个月。术后及末次随访时患者VAS、ODI评分明显改善，与术前相比差异有统计学意义（P〈0．05）。术后和末次随访时非融合节段ROM明显减低，与术前相比差异有统计学意义（P〈0．05）；邻近节段ROM略有增加，与术前相比差异无统计学意义（P〉0．05）。融合节段的融合率为91．6％。结论使用Bioflex系统治疗腰椎椎间盘退行性疾病是一种安全、有效的新方法，它能够在提供稳定的力学环境的同时，在一定程度上保留手术节段的活动度，有利于缓解椎间盘退变，可能避免刚性内固定引起的邻近椎间盘退变。展开更多
文摘AIM:To evaluate the methods and results of the AXIS lateral mass screw plate system in the treating of lower cervical spine injury.METHODS:29 cases of lower cervical vertebrae injury were fixed with AXIS system.All of them were followed up for more than 1 year.RESULTS:All cases had a good bone union without malformation.We found no complication of the injury to the vertebral arteries or nerves.There was no loosening of the plate and screw. CONCLUSION:AXIS lateral mass screw plate system has the characteristic of stable,simple and safe and is suitable for the treatment of lower cervical spine injury.
文摘AIM:To explore the long term therapeutic effects of surgical treatment for isthmic spondylolisthesis.METHODS:42 cases of isthmic spondylolisthesis were analyzed retrospectively among which 13 cases underwent simple lumbar interlaminar bone implant and 29 cases underwent transpedicular fixation combined with bone implantation.Assessment was made according to JOA standards before and after treatment.RESULTS:At a 3 years of follow up assessment,the functional outcome in transpedicular fixation assessed by JOA was excellent and good in 79.3%as compared with the group without fixation in which the excellent and good result was 76.9%.The level of pain and functional disability were similar in the two groups,but fusion rate in the group with transpedicular fixation was higher than that in group without it.CONCLUSION:Surgical treatment for isthmic spondylolisthesis improves function and relieves pain.
文摘Objective To study the effect of using improved 2D computer-assisted fluoroscopic navigation through simulating 3D vertebrae image to guide pedicle screw internal fixation.Methods Posterior pedicle screw internal fixation,distraction
文摘Objective： To study the biomechanical feature of a newly designed cervical vertebra internal fixation device and its clinical applications. Methods： Some functional spinal units were fixed respectively with titanium plate, fusion cage and new device designed by ourselves, then a controlled biomechanical study including flexion, extension, torsion and lateral bending was performed and the results were analyzed. Results： As to the mechanical performance, fusion cage showed poor performance in extension test and so did the titanium plate in the distortion test. However, the new device showed good performance in every test. Conclusion： Both simple titanium plate fixation and simple fusion cage fixation have biomechanical defaults, but they are complementary. The titanium plate-interbody fusion cage avoids the defaults and has specific advantages.
文摘Objective To evaluate the outcome of two methods for stabilization and fusion: posterolateral fusion and circumferential fusion involving posterior lumbar interbody fusion for lumbar stenosis with Grades 1 and 2 lumbar spondylolisthesis.Methods From April 1998 to April 2003, 45 patients suffering from lumbar stenosis with low degree lumbar spondylolisthesis treated in our hospital were retrospectively reviewed and assigned to two groups.Among them, 24 patients (group A) were treated with instrumented posterolateral fusion and 21 patients (group B) with instrumented circumferential fusion.The two groups were compared for clinical and radiological outcomes.Results All patients were followed up for 12 to 72 months.In group A, results showed preoperative clinical symptoms disappeared completely in 12 of 24 patients, and pain relief was seen in 91.7% (22/24).Two cases suffered from residual symptoms.Twenty-two cases obtained complete reduction of olisthy vertebral bodies, and anatomical reduction rate was 91.7%.No infection or neurological complication occurred in this group.In group B, results showed preoperative clinical symptoms disappeared completely in 13 of 21 patients, and pain relief was seen in 90.5% (19/21).One case suffered from residual symptoms.Twenty cases obtained complete reduction of the olisthy vertebral bodies, and anatomical reduction rate was 95.2%.Four cases of infection or neurological complication occurred in this group.Both groups indicated no significant difference in clinical outcomes and anatomical reduction rate during follow-up.But group A had better intraoperative circumstances and postoperative outcome than group B, while group B had better postoperative parameters in X-ray of Angle of Slipping and Disc Index than group A.Conclusions The first choice of surgical method for lumbar stenosis with low degree lumbar spondylolisthesis is instrumented posterolateral fusion.Only when patients suffer from severe preoperative disc degeneration and low back pain or intervertebral instability should we consider indications for additional use of CAGE.
文摘目的探讨Bioflex系统治疗腰椎椎间盘退行性疾病的临床疗效。方法2007年3月～2009年4月，行椎管减压、椎间融合（视椎间盘退变程度而定）联合Bioflex系统治疗腰椎椎间盘退行性疾病患者19例。记录视觉模拟评分（visual analog scale，VAS）、Oswestry功能障碍指数（Oswestry disability index，ODI）、节段活动范围（range of motion，ROM）及融合情况。结果患者均获随访，随访时间为9—25个月，平均16．8个月。术后及末次随访时患者VAS、ODI评分明显改善，与术前相比差异有统计学意义（P〈0．05）。术后和末次随访时非融合节段ROM明显减低，与术前相比差异有统计学意义（P〈0．05）；邻近节段ROM略有增加，与术前相比差异无统计学意义（P〉0．05）。融合节段的融合率为91．6％。结论使用Bioflex系统治疗腰椎椎间盘退行性疾病是一种安全、有效的新方法，它能够在提供稳定的力学环境的同时，在一定程度上保留手术节段的活动度，有利于缓解椎间盘退变，可能避免刚性内固定引起的邻近椎间盘退变。
