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Takahide Kurokawa - One of the best experts on this subject based on the ideXlab platform.
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Ossification of the ligamentum flavum in the thoracolumbar spine of young adults report of two cases
International Orthopaedics, 1992Co-Authors: T. Kojima, I. Oonishi, Takahide KurokawaAbstract:L'ossification du ligament jaune au niveau du rachis dorso-lombaire est rare chez l'adulte jeune. Nous en présentons deux cas, chez des hommes âgés de 22 ans, qui ont nécessité un traitement chirurgical. Le premier malade était obèse et hyper-insulinémique. Il présentait une myélopathie par compression au dessous de D11, due à une ossification postérieure étendue. Le second malade avait un ostéome ostéoïde du pédicule droit de D11 avec une ossification de la partie adjacente du ligament jaune. Ces deux patients ont été soulagés par la décompression chirurgicale de la moelle. Ossification of the ligamentum flavum in the thoracolumbar spine is rare in young adults. We report two cases in 22 year old males who required surgical treatment. The first patient was obese and hyperinsulinaemic. He had a compression myelopathy below T11 due to extensive posterior ossification. The second patient had an osteoid osteoma of the right pedicle of T11 with ossification of the adjacent Ligamenta flava. Both patients benefited from surgical decompression of the spine.
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Ossification of the ligamentum flavum in the thoracolumbar spine of young adults report of two cases.
International orthopaedics, 1992Co-Authors: T. Kojima, I. Oonishi, Takahide KurokawaAbstract:Ossification of the ligamentum flavum in the thoracolumbar spine is rare in young adults. We report two cases in 22 year old males who required surgical treatment. The first patient was obese and hyperinsulinaemic. He had a compression myelopathy below T11 due to extensive posterior ossification. The second patient had an osteoid osteoma of the right pedicle of T11 with ossification of the adjacent Ligamenta flava. Both patients benefited from surgical decompression of the spine.
Jelle R. De Kruijk - One of the best experts on this subject based on the ideXlab platform.
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Spinal cord compression caused by unusual location and extension of ossified Ligamenta flava in a Caucasian male. A case report and literature review.
Spine, 1999Co-Authors: Robert J. Van Oostenbrugge, Marcel J. Herpers, Jelle R. De KruijkAbstract:Study design. A case report of a spinal cord compression caused by ossification of the Ligamenta flava is presented together with a review of the literature. Objective. To present the diagnosis of ossification of the Ligamenta flava in a Caucasian man with a proximal thoracic myelopathy. Summary of Background Data. This case shows that the upper parts of the thoracic spine can be involved in ossification of the Ligamenta flava, which never before has been reported in Caucasian individuals. Furthermore, it is advised that computed tomography scanning and magnetic resonance imaging be combined to provide an accurate diagnosis and proper preoperative evaluation of the bony changes, spinal cord, and compression of the spinal cord. Methods. A patient with a thoracic spinal cord compression caused by ossification of the Ligamenta flava was treated surgically and made a good clinical recovery. Imaging studies, surgical findings, and results of histopathologic investigations were analyzed to substantiate the diagnosis. Results. The results of the surgical findings seemed to be in contrast with those of the imaging studies. This contrast was occasioned by the uncommon perioperative finding of a fusion of the completely ossified upper and lower parts of the involved adjacent Ligamenta flava. Ossification of the Ligamenta flava was diagnosed by histopathologic examination, which revealed endochondral ossification and lamellar bone formation without fragments of Ligamenta flava. Conclusion. Although rarely reported in whites, ossification of the Ligamenta flava should be considered in all patients presenting with a spinal cord compression, even at high thoracic levels. The prognosis after decompressive surgery can be good, especially if intramedullary hyperintensities are absent on preoperatively performed T2-weighted magnetic resonance images.
G R Harrison - One of the best experts on this subject based on the ideXlab platform.
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Topographical anatomy of the lumbar epidural region: an in vivo study using computerized axial tomography.
BJA: British Journal of Anaesthesia, 1999Co-Authors: G R HarrisonAbstract:The lumbar epidural region was studied using computerized tomography. This technique allows examination of the region in vivo. It confirmed that the spinal canal is oval in the upper lumbar region, becoming triangular lower down, and that the Ligamenta flava form a posterior recess to the vertebral canal. Epidural fat is confined to this region between the Ligamenta flava and the intervertebral foramina, and the dura mater lies apposed to the walls of the vertebral canal except where there is epidural fat. The absence of a posterior midline fold of dura mater was noted, and discussed in the light of other studies.
J R Jinkins - One of the best experts on this subject based on the ideXlab platform.
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CT and MRI characteristics of ossification of the Ligamenta flava in the thoracic spine.
European radiology, 2001Co-Authors: L Xiong, Q Y Zeng, J R JinkinsAbstract:The purpose of this study was to compare MRI findings with CT findings of mass-forming calcification/ossification of the thoracic Ligamenta flava (OTLF). Twenty-one Chinese patients presented with clinical evidence of chronic and progressive thoracic spinal cord compression which included: difficulty in walking; weakness; and/or numbness of the extremities, back pain, and lower extremity paresthesias. Axial and sagittal T1-weighted imaging (T1WI) and T2-weighted imaging (T2WI) were performed through the thoracic spine on a 1.0-T Impact unit (Siemens, Erlangen, Germany). Axial CT was obtained with 5-mm contiguous sections through the thoracic region. Decompressive surgery with resection of the OTLF were carried out in all patients. Low signal intensity of the mass-forming OTLF was demonstrated at a single level (n=1) or at multiple levels (n=20) on both T1WI and T2WI. The distribution of OTLF was bilateral at all levels identified in 6 cases, unilateral at all levels in 5 patients, and both unilateral and bilateral at different levels in 10 cases. Ossification of the thoracic Ligamenta flava involved the upper thoracic spine (T1–4) in 3 cases, midthoracic spine (T5–8) in 3 cases, lower thoracic spine (T9–12) in 10 cases, and more than one thoracic spinal subregion in 5 cases. Computed tomography confirmed the MR findings regarding the location and distribution of OTLF in all cases, as well as the associated evidence of central spinal canal stenosis. In addition, 5 patients revealed associated ossification of the posterior longitudinal ligament. All patients demonstrated gradual, but incomplete, clinical improvement of the radiculomyelopathy following decompressive surgery. Ossification of the posterior longitudinal ligament resulting in thoracic central spinal canal stenosis and clinical radiculomyelopathy is not uncommon in the Asian people. Ossification of the thoracic Ligamenta flava can be accurately evaluated equally well by CT and MR with regard to level(s) and side(s) of involvement, as well as to the relative degree of central spinal canal stenosis and the associated compression of the thoracic spinal cord.
T. Kojima - One of the best experts on this subject based on the ideXlab platform.
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Ossification of the ligamentum flavum in the thoracolumbar spine of young adults report of two cases
International Orthopaedics, 1992Co-Authors: T. Kojima, I. Oonishi, Takahide KurokawaAbstract:L'ossification du ligament jaune au niveau du rachis dorso-lombaire est rare chez l'adulte jeune. Nous en présentons deux cas, chez des hommes âgés de 22 ans, qui ont nécessité un traitement chirurgical. Le premier malade était obèse et hyper-insulinémique. Il présentait une myélopathie par compression au dessous de D11, due à une ossification postérieure étendue. Le second malade avait un ostéome ostéoïde du pédicule droit de D11 avec une ossification de la partie adjacente du ligament jaune. Ces deux patients ont été soulagés par la décompression chirurgicale de la moelle. Ossification of the ligamentum flavum in the thoracolumbar spine is rare in young adults. We report two cases in 22 year old males who required surgical treatment. The first patient was obese and hyperinsulinaemic. He had a compression myelopathy below T11 due to extensive posterior ossification. The second patient had an osteoid osteoma of the right pedicle of T11 with ossification of the adjacent Ligamenta flava. Both patients benefited from surgical decompression of the spine.
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Ossification of the ligamentum flavum in the thoracolumbar spine of young adults report of two cases.
International orthopaedics, 1992Co-Authors: T. Kojima, I. Oonishi, Takahide KurokawaAbstract:Ossification of the ligamentum flavum in the thoracolumbar spine is rare in young adults. We report two cases in 22 year old males who required surgical treatment. The first patient was obese and hyperinsulinaemic. He had a compression myelopathy below T11 due to extensive posterior ossification. The second patient had an osteoid osteoma of the right pedicle of T11 with ossification of the adjacent Ligamenta flava. Both patients benefited from surgical decompression of the spine.