Objective To describe the pathological unit and octagonal en bloc resection for the treatment of ossification ligamentum flavum(OLF)in thoracic spine with spondylotic myelopathy.Methods Ninety-five patients from Janua...Objective To describe the pathological unit and octagonal en bloc resection for the treatment of ossification ligamentum flavum(OLF)in thoracic spine with spondylotic myelopathy.Methods Ninety-five patients from January 2002 to January展开更多
Objective To investigate the difference between different surgical methods for thoracic ossification of ligamentum flavum(OLF) combined with cervical spondylotic myelopathy(CSM) . Methods From January 1991 to January ...Objective To investigate the difference between different surgical methods for thoracic ossification of ligamentum flavum(OLF) combined with cervical spondylotic myelopathy(CSM) . Methods From January 1991 to January 2003,56 cases展开更多
Objective To study the diagnosis and treatment of lower thoracic ossification of ligamentum flavum(OLF) combined with lumbar spinal stenosis.Methods Retrospective analysis was carried out on 11 cases of lower thoracic...Objective To study the diagnosis and treatment of lower thoracic ossification of ligamentum flavum(OLF) combined with lumbar spinal stenosis.Methods Retrospective analysis was carried out on 11 cases of lower thoracic OLF combined with展开更多
Objective To evaluate the effects of the laminar thinned-segmented decompression technique in the treatment of thoracic ossification of ligamentum flavum with spondylotic myelopathy.Methods From January 1999 to Januar...Objective To evaluate the effects of the laminar thinned-segmented decompression technique in the treatment of thoracic ossification of ligamentum flavum with spondylotic myelopathy.Methods From January 1999 to January 2009,126 cases展开更多
Objective To explore the strategy and outcomes of surgical treatment of thoracic ossification of ligamentum flavum(OLF),especially combined with ossification of posterior longitudinal ligament,thoracic kyphosis and ep...Objective To explore the strategy and outcomes of surgical treatment of thoracic ossification of ligamentum flavum(OLF),especially combined with ossification of posterior longitudinal ligament,thoracic kyphosis and epidural展开更多
Objective To investigate different surgical procedures for treatment of thoracic ossification of ligamentum flavum.Methods From January 1994 to June 2008,56 cases of thoracic ossification of ligamentum flavum underwent
Background Ossification of the ligamentum flavum （OLF） has been widely recognized as one of the main causes of thoracic spinal canal stenosis and thoracic myelopathy.Decompression is the only effective strategy for ...Background Ossification of the ligamentum flavum （OLF） has been widely recognized as one of the main causes of thoracic spinal canal stenosis and thoracic myelopathy.Decompression is the only effective strategy for treating thoracic myelopathy caused by OLF.The purpose of this study was to describe the clinical outcomes of computer-assisted minimally invasive spine surgery （CAMISS） for posterior decompression in patients with thoracic myelopathy caused by OLF.Methods In all cases,the surgical procedure was performed with the assistance of an intraoperative three-dimensional navigation system.Decompression of the spinal cord was performed with a high-speed drill; the supraspinal ligaments and spinous process were partially preserved.The outcomes were evaluated by a modified Japanese Orthopedic Association （JOA） scoring system and recovery rates.Results The mean duration of follow-up for the 14 cases was 3.9 years.All patients experienced neurological recovery,the mean JOA score improving from 6.1 points preoperatively to 8.6 points at final follow-up and the mean rate of recovery being 52.7% （excellent in two cases,good in eight,fair in three,and unchanged in one）.Conclusion CAMISS is a safe and effective procedure for resection of the OLF in the thoracic spine.展开更多
Background Surgical treatment of thoracic myelopathy caused by ossification of the posterior longitudinal ligament （OPLL） and ossification of the ligamentum flavum （OLF） is technically demanding, and the results t...Background Surgical treatment of thoracic myelopathy caused by ossification of the posterior longitudinal ligament （OPLL） and ossification of the ligamentum flavum （OLF） is technically demanding, and the results tend to be unfavorable. Various operative approaches and treatment strategies have been attempted, and posterior decompression with transforaminal thoracic interbody fusion （PTTIF） may be the optimal method with which the anterior-posterior compression was removed in one step. It is comparatively less traumatic with fewer serious complications.展开更多
Background：Ossification of the ligamentum flavum （OLF） is being increasingly recognized as a cause of thoracic myelopathy.This study was to describe a rare clinical entity of spinal cord kinking （SK） in thoracic ...Background：Ossification of the ligamentum flavum （OLF） is being increasingly recognized as a cause of thoracic myelopathy.This study was to describe a rare clinical entity of spinal cord kinking （SK） in thoracic myelopathy secondary to OLF.Methods：The data of 95 patients with thoracic myelopathy secondary to OLF were analyzed retrospectively.The incidence and location of SK were determined using preoperative magnetic resonance imaging （MRI）.The clinical presentation and radiological characteristics in patients with SK were analyzed.Posterior en bloc laminectomy with OLF was performed,and the surgical results were evaluated.Results：SK was found in seven patients （7.4％） based on preoperative MRI.The patients included one male and six females with an average age of 55.6 years （range,48-64 years）.Five patients presented with radiculomyelopathy and two presented with typical thoracic myelopathy of spastic paraparesis.In all cases,the kinking was located just above the end of the spinal cord where the conus medullaris （CM） was compressed by the OLF.The degree of SK varied from mild to severe.The tip of the CM was located between the upper third of T1 1 to the lower third of L 1,above the lower edge of L 1.With an average follow-up of 30.4 months,the modified Japanese Orthopedic Association score significantly improved from 5.7 ± 1.8 preoperatively to 8.9 ± 1.4 postoperatively （t =12.05;P ＜ 0.0001） with an improvement rate of 63.1 ± 12.3％.Conclusions：SK is a rare radiological phenomenon.It is typically located at the thoracolumbar junction,where the CM is compressed by the OLF.Our findings indicate that these patients may benefit from a posterior decompressive procedure.展开更多
Objective： To explore the epidemiology, clinical presentation, radiology and surgical treatment outcome in Chinese patients with myelopathy caused by contiguous multilevel ossification of ligamentum flavum. Methods....Objective： To explore the epidemiology, clinical presentation, radiology and surgical treatment outcome in Chinese patients with myelopathy caused by contiguous multilevel ossification of ligamentum flavum. Methods. Medical notes and imaging data of 18 Chinese patients （14 males and 4 females, aged 43-72 years, mean： 57 years ） with myelopathy caused by contiguous multilevel ossification of ligamentum flavum were studied retrospectively in this article. The diagnosis was based on clinical examination, X-ray films, computerized tomography （CT） and magnetic resonance imaging （MRI） scanning results and pathological results. Sixteen patients were treated by laminectomy and two by laminoplasty, The average follow-up duration was 34 months （range, 28-49 months ）. The outcome was evaluated by Japanese Orthopaedics Association （JOA） Score. Results： The average time for occurring clinical symptoms was 7.5 months （range, 2 days-16 months）. All the 18 cases presented with clinical evidences of chronic and progressive thoracic spinal cord compression, which included bilateral leg weakness, spastic gait, numbness in lower limbs, paresthesia in terminal and perineum, and urinary incontinence. Neurological examination revealed severe spastic paraparesis, absence of abdominal reflexes, and reduction of the sensory function below the compression level. The mean JOA score before operation was 3. 6 （range, 0-6 ）. MRI and CT scans of the thoracic spine confirmed the presence of contiguous multilevel ossification of the ligamentum flavum. The mean recovery rate after surgery in terms of JOA score was 66.3 % （ range, 33.3 %- 100% ）, with a mean final JOA score of 8. 3. Thoracic decompression laminectomy or laminoplasty could result in a good postoperative outcome. Conclusions ： Contiguous multilevel ossification of the ligamentum flavum is not a common cause of myelopathy in Chinese population and should be treated as early as possible. MRI and CT scan examinations may diagnose the presence of thoracic ossification of ligamentum flavum （OLF）. Posterior decompression, especially with en bloc dissection of the laminae, can obtain satisfactory results.展开更多
目的探讨Delta大通道脊柱内镜下单侧入路双侧减压技术治疗胸椎黄韧带骨化症的临床疗效。方法回顾性分析2019年8月至2022年1月潍坊市人民医院采用Delta大通道脊柱内镜治疗的13例胸椎黄韧带骨化症患者,其中男6例,女7例;年龄55~69岁,平均(6...目的探讨Delta大通道脊柱内镜下单侧入路双侧减压技术治疗胸椎黄韧带骨化症的临床疗效。方法回顾性分析2019年8月至2022年1月潍坊市人民医院采用Delta大通道脊柱内镜治疗的13例胸椎黄韧带骨化症患者,其中男6例,女7例;年龄55~69岁,平均(62.62±4.01)岁。记录患者基本信息及围手术期相关指标,并在术后1个月、6个月进行随访,记录术前术后改良日本骨科协会评分(modified Japanese orthopaedic association score,mJOA)、美国脊髓损伤协会(American spinal injury association,ASIA)感觉评分(ASIA sense score,ASS)和双下肢运动评分(ASIA motor score,AMS)变化情况。以mJOA评分计算术后6个月随访时的改善率(recover rate,RR)及优良率,对RR与性别、年龄、术前mJOA评分、影像学分型及病程进行相关性分析。结果平均手术时间为(108.46±16.12)min,平均出血量(23.46±7.47)mL,平均住院时间(6.08±0.86)d。术后随访时间为6~35个月,平均(16.77±9.33)个月,术后1个月及6个月随访时,mJOA、ASS、AMS评分均优于术前(P<0.05),平均RR为(55.69±19.73)%,优良率为69.23%。RR与术前病程呈负相关(P<0.001),与术前mJOA评分呈正相关(P=0.029),与性别、年龄、影像学分型均无明显相关性(P>0.05)。结论Delta大通道脊柱内镜技术治疗胸椎黄韧带骨化症安全可靠,具有术后恢复快、创伤小、出血量少等优势,短期效果良好。展开更多
目的：研究胸椎黄韧带骨化（ossification of the ligamentum flavum,OLF）发生年龄、节段分布、形态变化等的流行病学特点。方法：回顾性分析2010年2月以胸部症状来我院就诊的993例患者（男506,女487,年龄5～102岁,平均60岁）的胸部多...目的：研究胸椎黄韧带骨化（ossification of the ligamentum flavum,OLF）发生年龄、节段分布、形态变化等的流行病学特点。方法：回顾性分析2010年2月以胸部症状来我院就诊的993例患者（男506,女487,年龄5～102岁,平均60岁）的胸部多排探测CT（multidetector computed tomography,MDCT）片、轴位片结合矢状位CT片,分析胸椎黄韧带骨化的患病率及发生的节段、厚度、位置、硬膜囊压迫等情况,观察性别、年龄及发生节段等与OLF的关系。患病率采用《北京市2008年人口年龄构成统计》进行人群标化。结果：总体标化患病率为63.9%;男性标化患病率（68.5%）高于女性（59.0%）;50~59岁年龄组的患病率最高（79.2%）,但10~19岁人群也有OLF发生,其患病率为50.0%;T10~T11（44.0%）和T11~T12（41.6%）节段OLF的患病率亦较高。结论：被调查人群中,胸椎OLF患病率较高,出现年龄较早,发生于下胸段多于中上胸段,患病率与年龄具有一定的相关性。展开更多
文摘Objective To describe the pathological unit and octagonal en bloc resection for the treatment of ossification ligamentum flavum(OLF)in thoracic spine with spondylotic myelopathy.Methods Ninety-five patients from January 2002 to January
文摘Objective To investigate the difference between different surgical methods for thoracic ossification of ligamentum flavum(OLF) combined with cervical spondylotic myelopathy(CSM) . Methods From January 1991 to January 2003,56 cases
文摘Objective To study the diagnosis and treatment of lower thoracic ossification of ligamentum flavum(OLF) combined with lumbar spinal stenosis.Methods Retrospective analysis was carried out on 11 cases of lower thoracic OLF combined with
文摘Objective To evaluate the effects of the laminar thinned-segmented decompression technique in the treatment of thoracic ossification of ligamentum flavum with spondylotic myelopathy.Methods From January 1999 to January 2009,126 cases
文摘Objective To explore the strategy and outcomes of surgical treatment of thoracic ossification of ligamentum flavum(OLF),especially combined with ossification of posterior longitudinal ligament,thoracic kyphosis and epidural
文摘Objective To investigate different surgical procedures for treatment of thoracic ossification of ligamentum flavum.Methods From January 1994 to June 2008,56 cases of thoracic ossification of ligamentum flavum underwent
文摘Background Ossification of the ligamentum flavum （OLF） has been widely recognized as one of the main causes of thoracic spinal canal stenosis and thoracic myelopathy.Decompression is the only effective strategy for treating thoracic myelopathy caused by OLF.The purpose of this study was to describe the clinical outcomes of computer-assisted minimally invasive spine surgery （CAMISS） for posterior decompression in patients with thoracic myelopathy caused by OLF.Methods In all cases,the surgical procedure was performed with the assistance of an intraoperative three-dimensional navigation system.Decompression of the spinal cord was performed with a high-speed drill; the supraspinal ligaments and spinous process were partially preserved.The outcomes were evaluated by a modified Japanese Orthopedic Association （JOA） scoring system and recovery rates.Results The mean duration of follow-up for the 14 cases was 3.9 years.All patients experienced neurological recovery,the mean JOA score improving from 6.1 points preoperatively to 8.6 points at final follow-up and the mean rate of recovery being 52.7% （excellent in two cases,good in eight,fair in three,and unchanged in one）.Conclusion CAMISS is a safe and effective procedure for resection of the OLF in the thoracic spine.
文摘Background Surgical treatment of thoracic myelopathy caused by ossification of the posterior longitudinal ligament （OPLL） and ossification of the ligamentum flavum （OLF） is technically demanding, and the results tend to be unfavorable. Various operative approaches and treatment strategies have been attempted, and posterior decompression with transforaminal thoracic interbody fusion （PTTIF） may be the optimal method with which the anterior-posterior compression was removed in one step. It is comparatively less traumatic with fewer serious complications.
文摘Background：Ossification of the ligamentum flavum （OLF） is being increasingly recognized as a cause of thoracic myelopathy.This study was to describe a rare clinical entity of spinal cord kinking （SK） in thoracic myelopathy secondary to OLF.Methods：The data of 95 patients with thoracic myelopathy secondary to OLF were analyzed retrospectively.The incidence and location of SK were determined using preoperative magnetic resonance imaging （MRI）.The clinical presentation and radiological characteristics in patients with SK were analyzed.Posterior en bloc laminectomy with OLF was performed,and the surgical results were evaluated.Results：SK was found in seven patients （7.4％） based on preoperative MRI.The patients included one male and six females with an average age of 55.6 years （range,48-64 years）.Five patients presented with radiculomyelopathy and two presented with typical thoracic myelopathy of spastic paraparesis.In all cases,the kinking was located just above the end of the spinal cord where the conus medullaris （CM） was compressed by the OLF.The degree of SK varied from mild to severe.The tip of the CM was located between the upper third of T1 1 to the lower third of L 1,above the lower edge of L 1.With an average follow-up of 30.4 months,the modified Japanese Orthopedic Association score significantly improved from 5.7 ± 1.8 preoperatively to 8.9 ± 1.4 postoperatively （t =12.05;P ＜ 0.0001） with an improvement rate of 63.1 ± 12.3％.Conclusions：SK is a rare radiological phenomenon.It is typically located at the thoracolumbar junction,where the CM is compressed by the OLF.Our findings indicate that these patients may benefit from a posterior decompressive procedure.
文摘Objective： To explore the epidemiology, clinical presentation, radiology and surgical treatment outcome in Chinese patients with myelopathy caused by contiguous multilevel ossification of ligamentum flavum. Methods. Medical notes and imaging data of 18 Chinese patients （14 males and 4 females, aged 43-72 years, mean： 57 years ） with myelopathy caused by contiguous multilevel ossification of ligamentum flavum were studied retrospectively in this article. The diagnosis was based on clinical examination, X-ray films, computerized tomography （CT） and magnetic resonance imaging （MRI） scanning results and pathological results. Sixteen patients were treated by laminectomy and two by laminoplasty, The average follow-up duration was 34 months （range, 28-49 months ）. The outcome was evaluated by Japanese Orthopaedics Association （JOA） Score. Results： The average time for occurring clinical symptoms was 7.5 months （range, 2 days-16 months）. All the 18 cases presented with clinical evidences of chronic and progressive thoracic spinal cord compression, which included bilateral leg weakness, spastic gait, numbness in lower limbs, paresthesia in terminal and perineum, and urinary incontinence. Neurological examination revealed severe spastic paraparesis, absence of abdominal reflexes, and reduction of the sensory function below the compression level. The mean JOA score before operation was 3. 6 （range, 0-6 ）. MRI and CT scans of the thoracic spine confirmed the presence of contiguous multilevel ossification of the ligamentum flavum. The mean recovery rate after surgery in terms of JOA score was 66.3 % （ range, 33.3 %- 100% ）, with a mean final JOA score of 8. 3. Thoracic decompression laminectomy or laminoplasty could result in a good postoperative outcome. Conclusions ： Contiguous multilevel ossification of the ligamentum flavum is not a common cause of myelopathy in Chinese population and should be treated as early as possible. MRI and CT scan examinations may diagnose the presence of thoracic ossification of ligamentum flavum （OLF）. Posterior decompression, especially with en bloc dissection of the laminae, can obtain satisfactory results.
文摘目的探讨Delta大通道脊柱内镜下单侧入路双侧减压技术治疗胸椎黄韧带骨化症的临床疗效。方法回顾性分析2019年8月至2022年1月潍坊市人民医院采用Delta大通道脊柱内镜治疗的13例胸椎黄韧带骨化症患者,其中男6例,女7例;年龄55~69岁,平均(62.62±4.01)岁。记录患者基本信息及围手术期相关指标,并在术后1个月、6个月进行随访,记录术前术后改良日本骨科协会评分(modified Japanese orthopaedic association score,mJOA)、美国脊髓损伤协会(American spinal injury association,ASIA)感觉评分(ASIA sense score,ASS)和双下肢运动评分(ASIA motor score,AMS)变化情况。以mJOA评分计算术后6个月随访时的改善率(recover rate,RR)及优良率,对RR与性别、年龄、术前mJOA评分、影像学分型及病程进行相关性分析。结果平均手术时间为(108.46±16.12)min,平均出血量(23.46±7.47)mL,平均住院时间(6.08±0.86)d。术后随访时间为6~35个月,平均(16.77±9.33)个月,术后1个月及6个月随访时,mJOA、ASS、AMS评分均优于术前(P<0.05),平均RR为(55.69±19.73)%,优良率为69.23%。RR与术前病程呈负相关(P<0.001),与术前mJOA评分呈正相关(P=0.029),与性别、年龄、影像学分型均无明显相关性(P>0.05)。结论Delta大通道脊柱内镜技术治疗胸椎黄韧带骨化症安全可靠,具有术后恢复快、创伤小、出血量少等优势,短期效果良好。
文摘目的：研究胸椎黄韧带骨化（ossification of the ligamentum flavum,OLF）发生年龄、节段分布、形态变化等的流行病学特点。方法：回顾性分析2010年2月以胸部症状来我院就诊的993例患者（男506,女487,年龄5～102岁,平均60岁）的胸部多排探测CT（multidetector computed tomography,MDCT）片、轴位片结合矢状位CT片,分析胸椎黄韧带骨化的患病率及发生的节段、厚度、位置、硬膜囊压迫等情况,观察性别、年龄及发生节段等与OLF的关系。患病率采用《北京市2008年人口年龄构成统计》进行人群标化。结果：总体标化患病率为63.9%;男性标化患病率（68.5%）高于女性（59.0%）;50~59岁年龄组的患病率最高（79.2%）,但10~19岁人群也有OLF发生,其患病率为50.0%;T10~T11（44.0%）和T11~T12（41.6%）节段OLF的患病率亦较高。结论：被调查人群中,胸椎OLF患病率较高,出现年龄较早,发生于下胸段多于中上胸段,患病率与年龄具有一定的相关性。
