Objective To evaluate the safety and efficiency of hemi-semi laminectomy approach for the micro- surgical treatment of spinal schwannomas. Methods A total of 22 patients underwent hemi-semi laminectomy for the micros...Objective To evaluate the safety and efficiency of hemi-semi laminectomy approach for the micro- surgical treatment of spinal schwannomas. Methods A total of 22 patients underwent hemi-semi laminectomy for the microsurgical removal of spinal schwannomas during a period of 2009 and 2011 in Affiliated Hospital of Nantong University. We ret- rospectively analyzed the clinical outcomes of these patients. Results Of them, 5 cases were diagnosed with cervical schwannomas, 9 with thoracic schwarmomas, and 8 with lumbar schwannomas. All the tumors including two dumbbell schwannomas were totally removed without major complications. Postoperatively, all patients were followed up from 6 to 36 months. The symp- toms and signs were obviously improved, and no tumor recurrence or spinal deformity occurred. Conclusion Hemi-semi laminectomy is a safe and effective method for resection of spinal schwan- nomas展开更多
Chronic pain, a multidimensional experience affecting individuals’ sensory, cognitive, and emotional aspects, significantly impacts their quality of life. Post-laminectomy syndrome, a condition characterized by persi...Chronic pain, a multidimensional experience affecting individuals’ sensory, cognitive, and emotional aspects, significantly impacts their quality of life. Post-laminectomy syndrome, a condition characterized by persistent back pain following spinal surgery, often leads to disability and increased healthcare utilization. Methods: This randomized, controlled, blind clinical trial aimed to investigate the efficacy of Transcranial Direct Current Stimulation (tDCS) in managing pain from post-laminectomy syndrome in patients. Twenty-four participants were assigned to three groups: sham stimulation, active stimulation over primary motor cortex (M1), or stimulation over dorsolateral prefrontal cortex (DLPFC). Stimulation was administered for five consecutive days, 20 minutes per session, using a current of 1.5 mA through 25 cm<sup>2</sup> electrodes. Pain intensity was assessed using Visual Analog Scale (VAS) before, during, and after intervention. Results: An ANOVA model demonstrates significant reduction in pain intensity compared to baseline in VAS, (F(7, 285) = 12.292;p 0.001;Power = 1.000;η2p = 0.534), in tDCS applied to M1, after five days of intervention. After stimulation, a significant improvement was observed in WHOQoL-Bref Quality of life item 1 (p = 0.04), considering statistical significant difference p 0.05. Correlation between the variables: quality of life, depression, anxiety and pain also demonstrates reduction in depression and anxiety according to Beck’s Depression and Anxiety Inventories (BDI and BAI), p 0.05. This effect was not observed in DLPFC stimulation group. Patients who believed they received active stimulation, in sham group, demonstrated potential for effective blinding. Conclusion: The tDCS applied to primary motor cortex effectively improved pain management and psychiatry symptoms in post-laminectomy syndrome patients. The technique’s low cost, ease of use, and high tolerability make it a promising adjuvant therapy for chronic pain conditions like post-laminectomy syndrome.展开更多
近年来,单侧椎板切开双侧减压(unilateral laminotomy for bilateral decompression,ULBD)技术在脊柱外科领域已经成为一种新兴的手术技术,得到越来越多研究者的认可。内镜辅助下行ULBD技术,术中可以获得更加清晰的视野而避免损伤硬膜...近年来,单侧椎板切开双侧减压(unilateral laminotomy for bilateral decompression,ULBD)技术在脊柱外科领域已经成为一种新兴的手术技术,得到越来越多研究者的认可。内镜辅助下行ULBD技术,术中可以获得更加清晰的视野而避免损伤硬膜囊及神经根,在保留脊柱的生理解剖结构的同时增大了术后脊柱稳定性,提高患者满意度及生活质量。该技术要求术者对解剖结构、手术步骤及器械有足够的认知,所以陡峭的学习曲线已然是该技术的一个难点。本文针对内镜下ULBD技术的发展历史、临床应用、应用前景,以及适应证、禁忌证和并发症等多个方面进行综述。展开更多
Objective:To analyze the effect and medical sclf-crosslinking sodium hyaluronate gel on epidural scar adhesion after laminectomy.Methods:A total of 24 New Zealand L5 laminectomy rabbits were randomly divided into four...Objective:To analyze the effect and medical sclf-crosslinking sodium hyaluronate gel on epidural scar adhesion after laminectomy.Methods:A total of 24 New Zealand L5 laminectomy rabbits were randomly divided into four groups,group A as the control group without any treatment:group B covered by sodium hyaluronate gel;group C and group D covered by 0.5 and1.0 mL medical self-crosslinking sodium hyaluronate gel.All rabbits were scored at various time points after 2.4,6,8,12 weeks,then the formation of scar was observed.Results:In Groups B,C,D loose scar tissue occurred after 2 weeks of the operation,scar tissues were significantly less than that in group A,with mild inflammatory reaction.After 8 weeks,the scar tissues of group B were significantly more than that of groups C,D.After two weeks,group B,C were back to the preoperative level;After 4 weeks,group D was back to the preoperative level;After four weeks,the CSEP of group A was increased significantly,which was significantly higher than that in groups B,C,D.The motor function score of group A,group B and group C were the same as preoperative,but that in group D it was decreased significantly,and then it gradually recovered.After 4 weeks it kept a stable level.The motor function score of group A was decreased gradually after the operation,which kept a stable level after 4 weeks,the motor function score was significantly lower man that in groups B,C,D.Conclusions:Determination of somatosensory evoked potentials is sensitive indicator of spinal cord injury;Application of medical selfcrosslinking sodium hyaluronate gel is effective on epidural scar adhesion after laminectomy.展开更多
To determine the effect of straight-leg-raising （SLR） movement on epidural fibrosis after laminectomy, 40 adult New Zealand rabbits were selected as laminectomy models in the study. They were divided into 2 groups：...To determine the effect of straight-leg-raising （SLR） movement on epidural fibrosis after laminectomy, 40 adult New Zealand rabbits were selected as laminectomy models in the study. They were divided into 2 groups： a SLR group （group S） and a control group （group C） randomly, with each group having 20 animals. All rabbits were subjected to total laminectomy in the site of S1. Every 5 rabbits in each group selected randomly were killed at the 1st, 2nd, 4th, and 8th week after the surgery. Segments of spines from L,7 to S2 were removed en bloc. After gross evaluation, specimens were sliced up. The slices were stained by HE and Masson＇s trichrome methods respectively for histological examination. Our results showed that formation process of scar in group S was retarded as compared with that of group C at the time of the 2nd-week, but there was no statistical difference between groups in the adhesion degree （P≥0.05）. At the 4th and 8th week, the epidural fibrosis of group S was more serious than that of group C. Since the 2nd-week, the area of scar in group S was larger than that of group C. The number of fibroblasts and inflammatory cells in group S were larger than those of group C at early stage. But in later stage, there was no statistical significance between the two groups. It is concluded that SLR movement after laminectomy may promote the formation of epidural fibrosis and retard the maturity of scar. SLR movement can also aggravate scar adhesion.展开更多
Today, the ultrasound guidance (USG) in regional anesthesia is gold standard more and more often used for medial or paramedian approaches around to the spine, such as the paravertebral (PV) block. Local anatomical cha...Today, the ultrasound guidance (USG) in regional anesthesia is gold standard more and more often used for medial or paramedian approaches around to the spine, such as the paravertebral (PV) block. Local anatomical changes may greatly handicap the performance of this type of block. We present clinical, sonographic, and radiological data on successful PV block and catheter placement in four patients with vertebral diseases, targeting thoracotomy or lumbotomy postoperative pain after stabilization of the involved vertebral body and preliminary arthrodesis with laminectomy by the posterior approach. We emphasize the importance of USG in this special context involving local anatomical disturbance.展开更多
Dorsal decompression in patients, presenting with cervical spondylotic myelopathy with no signs of instability, is a standard surgical option. Laminectomy or laminoplasty is applied to reduce the pressure on the myelo...Dorsal decompression in patients, presenting with cervical spondylotic myelopathy with no signs of instability, is a standard surgical option. Laminectomy or laminoplasty is applied to reduce the pressure on the myelon. The aim of this study was to evaluate the clinical outcome in a consecutive series of patients. This retrospective study included a total of 65 patients who underwent laminectomy or laminoplasty at a single or more levels, without fusion for cervical spondylotic myelopathy, during an 8-year period (2000-2007). The clinical data evaluation included pre- and postoperative patient history and neurological and surgical variables. The radiological assessment included MRI, CT, and plain anterior-posterior, lateral, and lateral flexion-extension X-rays. The mean follow-up time was 15 months. Improvement of gait disturbance was documented in 74% of the patients concerned. Radicular pain in the upper limbs (UL) and lower limbs (LL) improved in 87% and 50% of the patients, respectively. Sensory deficits improved in the UL and LL in 76% and 54%, respectively. Motor deficits improved in the UL and LL in 70% and 56% of the patients, respectively. Clinical deterioration after surgery was documented in one patient. Based on our results, laminectomy without fusion can be advocated as a safe and effective surgical strategy to treat cervical spondylotic myelopathy in patients without preoperative instability. In these patients, the occurrence of post-procedural clinical deterioration and instability was low, and overall improvement of neurological deficits and amelioration of radicular pain can be expected in a significant number of patients.展开更多
Objective To introduce surgical strategy of enlarged laminectomy (with partial facet joint dissection to expose nerve root) ,and to discuss its benefit for cervicalossification of posterior longitudinal ligament (OPLL)
Objective To observe the preventive effect of continuous irrigation with sodium hyaluronate injection from peridural adhesionaminectomy.Methods Larninectomies were performed in L1,L4,L7 of 25 New Zealand rabbits respe...Objective To observe the preventive effect of continuous irrigation with sodium hyaluronate injection from peridural adhesionaminectomy.Methods Larninectomies were performed in L1,L4,L7 of 25 New Zealand rabbits respectively with 3展开更多
文摘Objective To evaluate the safety and efficiency of hemi-semi laminectomy approach for the micro- surgical treatment of spinal schwannomas. Methods A total of 22 patients underwent hemi-semi laminectomy for the microsurgical removal of spinal schwannomas during a period of 2009 and 2011 in Affiliated Hospital of Nantong University. We ret- rospectively analyzed the clinical outcomes of these patients. Results Of them, 5 cases were diagnosed with cervical schwannomas, 9 with thoracic schwarmomas, and 8 with lumbar schwannomas. All the tumors including two dumbbell schwannomas were totally removed without major complications. Postoperatively, all patients were followed up from 6 to 36 months. The symp- toms and signs were obviously improved, and no tumor recurrence or spinal deformity occurred. Conclusion Hemi-semi laminectomy is a safe and effective method for resection of spinal schwan- nomas
文摘Chronic pain, a multidimensional experience affecting individuals’ sensory, cognitive, and emotional aspects, significantly impacts their quality of life. Post-laminectomy syndrome, a condition characterized by persistent back pain following spinal surgery, often leads to disability and increased healthcare utilization. Methods: This randomized, controlled, blind clinical trial aimed to investigate the efficacy of Transcranial Direct Current Stimulation (tDCS) in managing pain from post-laminectomy syndrome in patients. Twenty-four participants were assigned to three groups: sham stimulation, active stimulation over primary motor cortex (M1), or stimulation over dorsolateral prefrontal cortex (DLPFC). Stimulation was administered for five consecutive days, 20 minutes per session, using a current of 1.5 mA through 25 cm<sup>2</sup> electrodes. Pain intensity was assessed using Visual Analog Scale (VAS) before, during, and after intervention. Results: An ANOVA model demonstrates significant reduction in pain intensity compared to baseline in VAS, (F(7, 285) = 12.292;p 0.001;Power = 1.000;η2p = 0.534), in tDCS applied to M1, after five days of intervention. After stimulation, a significant improvement was observed in WHOQoL-Bref Quality of life item 1 (p = 0.04), considering statistical significant difference p 0.05. Correlation between the variables: quality of life, depression, anxiety and pain also demonstrates reduction in depression and anxiety according to Beck’s Depression and Anxiety Inventories (BDI and BAI), p 0.05. This effect was not observed in DLPFC stimulation group. Patients who believed they received active stimulation, in sham group, demonstrated potential for effective blinding. Conclusion: The tDCS applied to primary motor cortex effectively improved pain management and psychiatry symptoms in post-laminectomy syndrome patients. The technique’s low cost, ease of use, and high tolerability make it a promising adjuvant therapy for chronic pain conditions like post-laminectomy syndrome.
文摘近年来,单侧椎板切开双侧减压(unilateral laminotomy for bilateral decompression,ULBD)技术在脊柱外科领域已经成为一种新兴的手术技术,得到越来越多研究者的认可。内镜辅助下行ULBD技术,术中可以获得更加清晰的视野而避免损伤硬膜囊及神经根,在保留脊柱的生理解剖结构的同时增大了术后脊柱稳定性,提高患者满意度及生活质量。该技术要求术者对解剖结构、手术步骤及器械有足够的认知,所以陡峭的学习曲线已然是该技术的一个难点。本文针对内镜下ULBD技术的发展历史、临床应用、应用前景,以及适应证、禁忌证和并发症等多个方面进行综述。
文摘目的:构建椎管重建内固定术的有限元模型,并分析椎管重建内固定术对脊柱稳定性的影响,验证椎管重建内固定术在椎管内手术中的有效性和可靠性。方法:筛选1名30岁男性,身高172 cm,体重75 kg的健康志愿者并采集其腰椎CT资料,建立正常腰椎L3-L5的有限元模型,并与体外实体结果和已发表的有限元分析结果进行比较,以验证该模型的有效性。根据处理方式不同分为正常组、椎板切除组和椎管重建组。在相同边界固定和生理载荷条件下,实施前屈、后伸、左弯、右弯、左旋和右旋6种工况活动,分析6种工况活动下L3-L4和L4-L5观察节段的活动度(range of motion,ROM)和L3-L5整体最大ROM的变化情况。结果:构建的L3-L5有限元模型各节段ROM位移与体外实体结果和既往文献数据结果吻合,确认了该模型的有效性。在L3-L4中,椎管重建组仅在后伸时较正常组增加,ROM变化百分比>5%;其他工况下的ROM与正常组相近,变化百分比<5%;而椎板切除组在前屈、后伸、左旋和右旋时的ROM较正常组和椎管重建组增加,变化百分比>5%。在L4-L5中,椎管重建组,在各工况下的ROM与正常组相近,变化百分比<5%,而椎板切除组在6种工况下的ROM均大于正常组和椎管重建组,变化百分比>5%。在L3-L5的整体最大ROM中,椎管重建组仅在后伸时超过正常组,变化百分比>5%;而椎板切除在前屈、后伸、左旋和右旋时大于正常组和椎管重建组,变化百分比>5%。L3-L5各节段ROM及总体ROM的变化趋势为:椎板切除组>椎管重建组>正常组。结论:椎板切除会严重影响脊柱生物力学的稳定性,而应用椎管重建内固定的方式可有效减少脊柱责任节段的ROM位移并维持其生物力学稳定性。
基金supported by Xinjiang Medical University(YG2011032)
文摘Objective:To analyze the effect and medical sclf-crosslinking sodium hyaluronate gel on epidural scar adhesion after laminectomy.Methods:A total of 24 New Zealand L5 laminectomy rabbits were randomly divided into four groups,group A as the control group without any treatment:group B covered by sodium hyaluronate gel;group C and group D covered by 0.5 and1.0 mL medical self-crosslinking sodium hyaluronate gel.All rabbits were scored at various time points after 2.4,6,8,12 weeks,then the formation of scar was observed.Results:In Groups B,C,D loose scar tissue occurred after 2 weeks of the operation,scar tissues were significantly less than that in group A,with mild inflammatory reaction.After 8 weeks,the scar tissues of group B were significantly more than that of groups C,D.After two weeks,group B,C were back to the preoperative level;After 4 weeks,group D was back to the preoperative level;After four weeks,the CSEP of group A was increased significantly,which was significantly higher than that in groups B,C,D.The motor function score of group A,group B and group C were the same as preoperative,but that in group D it was decreased significantly,and then it gradually recovered.After 4 weeks it kept a stable level.The motor function score of group A was decreased gradually after the operation,which kept a stable level after 4 weeks,the motor function score was significantly lower man that in groups B,C,D.Conclusions:Determination of somatosensory evoked potentials is sensitive indicator of spinal cord injury;Application of medical selfcrosslinking sodium hyaluronate gel is effective on epidural scar adhesion after laminectomy.
文摘To determine the effect of straight-leg-raising （SLR） movement on epidural fibrosis after laminectomy, 40 adult New Zealand rabbits were selected as laminectomy models in the study. They were divided into 2 groups： a SLR group （group S） and a control group （group C） randomly, with each group having 20 animals. All rabbits were subjected to total laminectomy in the site of S1. Every 5 rabbits in each group selected randomly were killed at the 1st, 2nd, 4th, and 8th week after the surgery. Segments of spines from L,7 to S2 were removed en bloc. After gross evaluation, specimens were sliced up. The slices were stained by HE and Masson＇s trichrome methods respectively for histological examination. Our results showed that formation process of scar in group S was retarded as compared with that of group C at the time of the 2nd-week, but there was no statistical difference between groups in the adhesion degree （P≥0.05）. At the 4th and 8th week, the epidural fibrosis of group S was more serious than that of group C. Since the 2nd-week, the area of scar in group S was larger than that of group C. The number of fibroblasts and inflammatory cells in group S were larger than those of group C at early stage. But in later stage, there was no statistical significance between the two groups. It is concluded that SLR movement after laminectomy may promote the formation of epidural fibrosis and retard the maturity of scar. SLR movement can also aggravate scar adhesion.
文摘Today, the ultrasound guidance (USG) in regional anesthesia is gold standard more and more often used for medial or paramedian approaches around to the spine, such as the paravertebral (PV) block. Local anatomical changes may greatly handicap the performance of this type of block. We present clinical, sonographic, and radiological data on successful PV block and catheter placement in four patients with vertebral diseases, targeting thoracotomy or lumbotomy postoperative pain after stabilization of the involved vertebral body and preliminary arthrodesis with laminectomy by the posterior approach. We emphasize the importance of USG in this special context involving local anatomical disturbance.
文摘Dorsal decompression in patients, presenting with cervical spondylotic myelopathy with no signs of instability, is a standard surgical option. Laminectomy or laminoplasty is applied to reduce the pressure on the myelon. The aim of this study was to evaluate the clinical outcome in a consecutive series of patients. This retrospective study included a total of 65 patients who underwent laminectomy or laminoplasty at a single or more levels, without fusion for cervical spondylotic myelopathy, during an 8-year period (2000-2007). The clinical data evaluation included pre- and postoperative patient history and neurological and surgical variables. The radiological assessment included MRI, CT, and plain anterior-posterior, lateral, and lateral flexion-extension X-rays. The mean follow-up time was 15 months. Improvement of gait disturbance was documented in 74% of the patients concerned. Radicular pain in the upper limbs (UL) and lower limbs (LL) improved in 87% and 50% of the patients, respectively. Sensory deficits improved in the UL and LL in 76% and 54%, respectively. Motor deficits improved in the UL and LL in 70% and 56% of the patients, respectively. Clinical deterioration after surgery was documented in one patient. Based on our results, laminectomy without fusion can be advocated as a safe and effective surgical strategy to treat cervical spondylotic myelopathy in patients without preoperative instability. In these patients, the occurrence of post-procedural clinical deterioration and instability was low, and overall improvement of neurological deficits and amelioration of radicular pain can be expected in a significant number of patients.
文摘Objective To introduce surgical strategy of enlarged laminectomy (with partial facet joint dissection to expose nerve root) ,and to discuss its benefit for cervicalossification of posterior longitudinal ligament (OPLL)
文摘Objective To observe the preventive effect of continuous irrigation with sodium hyaluronate injection from peridural adhesionaminectomy.Methods Larninectomies were performed in L1,L4,L7 of 25 New Zealand rabbits respectively with 3
