胸椎黄韧带骨化症手术并发硬脊膜损伤或脑脊液漏的原因分析及防治

目的：分析胸椎黄韧带骨化症(ossification of ligamentum flavum,OLF)手术并发硬脊膜损伤或脑脊液漏的原因，并探讨其防治方法。方法：对103例手术治疗的胸椎OLF患者中并发硬脊膜损伤或脑脊液漏病例的临床资料进行回顾性分析。结果：30例发生硬脊膜损伤，发生率为29．13％；22例术后发生脑脊液漏，发生率为21．36％，其中21例患者经以俯卧位为主的综合治疗后痊愈，1例发生伤口全层裂开，二次手术后痊愈。结论：硬脊膜损伤或脑脊液漏是胸椎OLF手术易发生的并发症；俯卧位为主的综合治疗是治疗术后脑脊液漏的有效方案，但患者较痛苦，有待改进。     

Rotatorenmanschettenrupturen

Ohne Zusammenfassung      

Ossification of the ligamentum flavum of the thoracic spine in adult kyphosis

Summary Ossification of the ligamentum flavum has been recognised as a definite clinical entity as is ossification of the posterior longitudinal ligament. The incidence of both is high in Japan. This study demonstrates that the incidence of ossification of the ligamentum flavum in persons who have a kyphosis of the thoracic or lumbar spine is higher than in those who do not. It is considered that localised mechanical stress affecting the ligamentum flavum is a contributing factor to the development of ossification, together with the generalised factors which may favour bone formation. However, the aetiology of this lesion is still obscure as is that of ossification of the posterior longitudinal ligament.

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Résumé L'ossification du ligament jaune représente une entité clinique définie, de même que celle du ligament longitudinal postérieur. Les deux affections sont fréquentes au Japon. Cette étude montre que l'ossification du ligament jaune s'observe plus souvent chez les sujets qui présentent une cyphose dorsale ou lombaire. On peut penser que les contraintes mécaniques localisées au ligament jaune constituent un facteur contribuant au développement de l'ossification, et s'ajoutant aux facteurs généraux susceptibles de favoriser la formation osseuse. Cependant, l'étiologie de cette affection demeure mystérieuse de même que l'ossification du ligament longitudinal postérieur.

     

Combined laparoscopic and endoscopic treatment of perforated gastroduodenal ulcer using the ligamentum teres hepatis (LTH)

We propose a novel technique for laparoscopic treatment of perforated gastroduodenal ulcers. The principle of this procedure involves the closure of the perforated ulcer using the ligamentum teres hepatis (LTH). The LTH is cut near its umbilical end and then dissected up to the site of its hepatic insertion. The umbilical extremity of LTH is grasped with a Dormia noose passed through the ulcerated perforation via a gastroscope. Using the noose, the LTH is pulled through the ulcerated perforation until its volume fits and completely closes the perforation. This laparoscopic technique was performed in 15 patients (12 M, 3 F) with anterior perforated duodenal ulcer revealed within the previous 6 h. The procedure could not be performed in three cases: diameter of the perforation exceeding 1.5 cm (n=1), general purulent peritonitis (n=2). In the other 12 cases, closure of the ulcerated perforation with the LTH was realized without technical difficulty. The postoperative course was uncomplicated. The posttreatment comfort was excellent; the mean period of hospitalization was 10 days (range, 8–14 days). An endoscopic examination carried out following 5 weeks of anti-H2 treatment showed that cicatrization of the ulcer was good and that no pyloric stenosis remained. These initial results suggest that laparoscopic treatment of perforated gastroduodenal ulcer using the LTH is a simple procedure which can be performed with general assurance of success in patients whose perforated ulcers have occurred quite recently. As the laparoscopic procedure is less aggressive than a laparotomy, it enhances the postoperative comfort of patients and prevents the risk of parietal complications. Compared to laparoscopic endosuture this procedure is simple, effective, easier, and particularly adapted to large ulcerated perforation or when an ulcer's edges are tough or friable, tending to tear when knots are tied.Presented at the annual meeting of the Society of American Gastrointestinal Endoscopic Surgeons (SAGES), Nashville, TN, USA, 18–19 April 1994.     

Regional difference in the appearance of apoptotic cell death in the ligamentum flavum of the human cervical spine

Ossification or calcification of the ligamentum flavum (LF) is relatively common in the middle and lower cervical, thoracic, and lumbar spine but extremely rare in the upper cervical region. This clinical fact suggests that there exist local factors promoting or preventing ossification or calcification of LF. However, little is known about the differences in the ultrastructure and cellular alterations of the LF between the different spinal levels, even in the cervical spine. With electron microscopy, we examined samples of LF collected surgically from the upper and lower cervical spine regions; we then studied the apoptotic appearance of ligament cells using a preferential labeling method. We found direct evidence of apoptosis of ligament cells in the LF. Apoptosis was more apparent in the upper region samples than in the lower region samples. The spaces around the normal fibroblasts were filled with thick collagen fibrils, but the collagen fibrils disappeared around the apoptotic bodies and thin fibrils were formed. The difference of the level of apoptosis may correlate to the ultrastructual difference of LF, and our data will benefit further investigations seeking to clarify the mechanism of various pathological conditions in the human LF.     

Microfilamentous type VI collagen in the hyalinized stroma of the hypertrophied ligamentum flavum

Summary Thickened ligamenta flava obtained from 14 patients with spinal canal stenosis were examined with special reference to type VI collagen. The characteristic histological finding in the thickened area was rupture of normal elastic fibre meshwork with resultant fibrosis which usually appeared hyaline. Using an immunohistological method, collagen types VI, I and III were found to be present in the hyaline matrix. Ultrastructural study revealed many microfilamentous structures of type VI collagen admixed in loosely packed, banded collagen fibres. With differential salt precipitation of pepsin-extracted collagen the existence of type VI collagen was confirmed by SDS-polyacrylamide gel electrophoresis analysis and Western blotting analysis using anti-type VI collagen antibody. Quantification of type VI collagen in pepsin-extracted crude collagen samples by an inhibition enzyme-linked immunosorbent assay showed an increasing amount of type VI collagen in the thickened ligamenta flava compared to the normal ligaments. Thus, increase of type VI collagen is the main contribution to the thickening of the ligamentum flavum. This may represent an adaptational and reparative process associated with disruption of elastic fibres.     

Congenital absence of the pericardium and its relationship to the ligamentum arteriosum

Summary An anatomic and embryologic study of congenital absence of the pericardium and the relationship of the ligamentum arteriosum to this defect was carried out by the authors. A case report is presented to clinically correlate the anatomic and radiologic findings in this anomaly. The authors propose that visualization of the ligamentum arteriosum by computed tomography is a characteristic sign for congenital absence of the left pericardium.

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Absence congénitale de péricarde, ses relations avec le ligament artériel

Résumé Les auteurs ont effectué une étude anatomique et embryologique de l'absence congénitale du péricarde et des relations entre le ligament artériel et cette absence. Ils rapportent une observation à propos de laquelle ils établisent les corrélations cliniques des données anatomiques et radiologiques de cette variation. Ils suggèrent que la visualisation du ligament artériel par tomodensitométrie soit interprétée comme un signe caractéristique de l'absence congénitale du péricarde gauche.

     

后路全椎板切除减压并椎弓根内固定治疗胸椎后纵韧带骨化合并黄韧带骨化

目的探讨对胸椎后纵韧带骨化(ossification of posterior longitudinal ligament,OPLL)合并黄韧带骨化(ossification of ligamentum flavum,OLF)患者行后路全椎板切除减压并椎弓根内固定治疗的临床疗效。方法回顾性研究2008年7月~2013年4月,15例胸椎OPLL并OLF患者行后路全椎板切除减压并椎弓根内固定术治疗。分别统计患者一般情况、手术时间、出血量、卧床时间、术后并发症发生率、术前术后日本骨科学会(Japanese Orthopaedic Association,JOA)评分,并进行比较。结果平均随访38.7个月,患者术前、术后3个月及末次随访时JOA评分分别为3.9±1.2、8.1±2.2及10.3±2.5,差异具有统计学意义(P<0.05)。术中1例患者出现脑脊液漏,术后1例患者出现浅表伤口感染,1例患者出现血肿。结论胸椎OPLL并OLF患者行全椎板切除减压并椎弓根内固定术治疗,可获得满意的临床疗效。但该术式容易造成严重脊髓损伤,对术者技巧要求较高。     

Spinal Cord Kinking in Thoracic Myelopathy Caused by Ossification of the Ligamentum Flavum

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 T11 to the lower third of L1, above the lower edge of L1. 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.     

三维可视化技术在胸椎黄韧带骨化症手术治疗中的应用

目的 探讨三维可视化技术辅助设计手术治疗胸椎黄韧带骨化症的临床应用价值。方法 回顾性分析2013年11月—2016年12月郑州市骨科医院脊柱一科采用椎板切除治疗的44例胸椎黄韧带骨化症的临床资料。其中,男25例、女19例,年龄40～76岁。术前均采用Mimics软件对胸椎CT扫描的DICOM数据进行三维重建,在胸椎椎板和骨化黄韧带的三维可视化模型上观察骨化灶的立体结构以及与椎弓根、关节突、椎板的位置关系,计算数字模拟骨化灶体积;按照“分区椎板切除”的方式在三维可视化数字模型上进行骨化黄韧带的模拟切除;按照术前模拟切除步骤,实施手术操作。观察手术时间、术中出血量及并发症发生情况。术后12个月采用日本骨科协会(JOA)评分评估神经功能,根据术前和术后JOA评分计算JOA改良率,评估手术疗效。结果 三维重建模型44个,重建骨化灶103个,骨化灶体积为(1 831±443)mm³。44例患者均顺利完成手术,手术时间65～180(96.7±19.6)min;术中出血量230～1 350(432±83.5)mL。患者术后无脊髓神经损害症状加重者,术后神经症状均逐步好转。44例患者均获随访,随访时间13～46(25±10.3)个月。随访期间无迟发性感染、神经症状加重、内固定失败等并发症发生。术后12个月JOA评分(8.8±1.8)分,明显高于术前的(5.3±2.0)分,差异有统计学意义(t=11.566, P＜0.01);JOA评分改善率为64.2%±21.7%,疗效评价优13例、良21例、可10例,优良率77.3%(34/44)。结论 应用三维可视化技术进行术前评估,能够立体、全面了解骨化黄韧带的形态,通过模拟手术,设计手术切除范围,可以提高手术精准度、安全性和有效性,为胸椎黄韧带骨化症的诊疗提供了一种新的术前影像学辅助方法。