No abstract available.
Longitudinal Ligaments*

No abstract available.
Ganglia, Spinal* ; Longitudinal Ligaments*

No abstract available.
Deglutition Disorders ; Longitudinal Ligaments

No abstract available.
Humans ; Longitudinal Ligaments* ; Spine*

No abstract available.
Longitudinal Ligaments* ; Spine*

In 1960, Tskimoto first mentioned the spinal cord lesions caused by compression of posterior longitudinal ligament(OPLL), thereafter, hundreds of cases have been reported. There are, however, some controversial opinions concerning the mechanisms of the formation and development of OPLL and questions why a special ligaments, posterior longitudinal ligaments can be calcified, enlarged and compress the cord. And also, there have been many reports describing various surgical method that could manage OPLL, but the OPLL still has many problems in surgical treatment. Recently, the neurosurgical team at the St. Pauls Hospital, encountered and operated on 7 cases of OPLL at cervical area. After all dignostic tests and examinations were done, the morphological classification, combined other lesions and pathological status were verified and analyzed during treatment. The different surgical methods were taken case by case. The authors would like to share with you our experiences of the surgical methods, indications of operation the results and the progrosis of treatment in OPLL.
Classification ; Ligaments ; Longitudinal Ligaments ; Ossification of Posterior Longitudinal Ligament* ; Spinal Cord

Intradural lumbar disc herniation (ILDH) is rare. In this report, authors present 2 cases of ILDHs associated with severe adhesion between the dural sac and posterior longitudinal ligament. In a 40-year-old man, ILDH occurred in association with epidural adhesion due to ossification of the posterior longitudinal ligament (OPLL). In other 31-year-old man, ILDH occurred in presence of epidural adhesion due to previous spine surgery.
Adult ; Humans ; Longitudinal Ligaments ; Ossification of Posterior Longitudinal Ligament ; Spine

Ossification of the anterior longitudinal ligament of the spine was first reported by Dr. Forestier and Dr.Rotes in 1950. However, in no other countries but Japan there have been reports on the ossification of the posterior longitudinal ligament of the spine which was first reported by Tsukimoto in 1960. About 45% of ossification of the posterior longitudinal ligament of the spine have a combination of ossification of the anterior longitudinal ligament and yet it is considered to be a variety of the spinal geriatric conditions, favorable to the cervical spine. The condition develops similar symptoms of cervical spondylosis. Authors report two cases of ossification of posterior longitudinal ligament of cervical spine of Korean nationals at St. Marys hospital, Catholic Medical College.
Japan ; Longitudinal Ligaments ; Ossification of Posterior Longitudinal Ligament ; Spine ; Spondylosis

Direct anterior approach for lesions located anterior to the thecal sac is definitely superior to lateral or posterior approach in many respects. However, various anatomical obstacles and technical difficulties often hinder direct anterior approach. Thanks to ripe experience of retroperitoneal approach to the lumbar spine for anterior lumbar interbody fusion and total disc replacement, the authors could perform lumbar corpectomy and reconstruction by using midline retroperitoneal approach recently. During this approach, we repaired anterior longitudinal ligament also to reduce the risk of graft extrusion and to prevent erosion of vascular wall due to direct contact between metallic hardware, which was used for reconstruction of vertebral body, and major vessels.
Longitudinal Ligaments ; Spine ; Total Disc Replacement ; Transplants

OBJECTIVE: Computed tomography (CT)-based method of three dimensional (3D) analysis (MIMICS®, Materialise, Leuven, Belgium) is reported as very useful software for evaluation of OPLL, but its reliability and reproducibility are obscure. This study was conducted to evaluate the accuracy of MIMICS® system, and inter- and intra-observer reliability in the measurement of OPLL. METHODS: Three neurosurgeons independently analyzed the randomly selected 10 OPLL cases with medical image processing software (MIMICS®) which create 3D model with Digital Imaging and Communication in Medicine (DICOM) data from CT images after brief explanation was given to examiners before the image construction steps. To assess the reliability of inter- and intra-examiner intraclass correlation coefficient (ICC), 3 examiners measured 4 parameters (volume, length, width, and length) in 10 cases 2 times with 1-week interval. RESULTS: The inter-examiner ICCs among 3 examiners were 0.996 (95% confidence interval [CI], 0.987–0.999) for volume measurement, 0.973 (95% CI, 0.907–0.978) for thickness, 0.969 (95% CI, 0.895–0.993) for width, and 0.995 (95% CI, 0.983–0.999) for length. The intra-examiner ICCs were 0.994 (range, 0.991–0.996) for volume, 0.996 (range, 0.944–0.998) for length, 0.930 (range, 0.873–0.947) for width, and 0.987 (range, 0.985–0.995) for length. CONCLUSION: The medical image processing software (MIMICS®) provided detailed quantification OPLL volume with minimal error of inter- and intra-observer reliability in the measurement of OPLL.
Longitudinal Ligaments* ; Methods ; Neurosurgeons ; Observer Variation*