Hypertrophied Ligamentum Flavum

Beamer, Yancey; Garner, John T.; Shelden, C. Hunter

doi:10.1001/archsurg.1973.01350150029008

Cited by 70 publications

(27 citation statements)

References 16 publications

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“…The pathogenesis of degenerative lumbar stenosis originates in repeated axial and rotational strain and results in a minor local instability [10,14,17]. The biomechanical reaction is a median hypertrophy of the facet joints, and a thickening of the ligamentum flavum, both reducing the cross-sectional area of the spinal canal with consecutive compression of the dural sac [3,4,16,17,19]. The present unilateral approach allows an optimal bilateral decompression by removal of the thickened ligamentum flavum and resection of the medial hypertrophic facets.…”

Section: Discussionmentioning

confidence: 99%

Unilateral laminotomy for bilateral decompression of lumbar spinal stenosis

Spetzger¹,

Bertalanffy²,

Naujokat

et al. 1997

Acta neurochir

102

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A unilateral laminotomy for bilateral access to the lumbar spinal canal was investigated in human cadaver spine specimens to test its practicability in the treatment of spinal stenosis. Micro-surgical decompression was performed by partial resection of the ipsilateral facet, the medial portion of the laminar arch, the contralateral facet and by complete removal of the ligamentum flavum. Anatomical, radiological and morphometrical studies on 4 adult cadaver spine specimens have proved the feasibility of this unilateral approach. Complete bilateral flavectomy and partial bilateral facetectomy were the essential surgical steps for an adequate operative decompression.

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Section: Discussionmentioning

confidence: 99%

Unilateral laminotomy for bilateral decompression of lumbar spinal stenosis

Spetzger¹,

Bertalanffy²,

Naujokat

et al. 1997

Acta neurochir

102

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“…Degeneration of the LF is an important causative factor in the development of lumbar spinal stenosis (LSS). For this reason, considerable interest has been paid to its morphological or histological changes [5][6][7]. By contrast, the EM and PRFT have not received much attention in studies of LSS.…”

Section: Introductionmentioning

confidence: 99%

Morphology and clinical importance of epidural membrane and periradicular fibrous tissue in lumbar spinal stenosis

et al. 2016

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“…1 The ligamentum flavum covers most of the posterolateral part of the lumbar spinal canal extending from the second cervical vertebra to the sacral one. 2,3 The LF connects two adjacent laminae and lines an important part of the osseous and soft tissue sections of the posterior epidural region. 4,5 Hypertrophy of the LF is considered an important causative factor in the development of lumber spinal stenosis, compression of the dural sac and roots, and significantly contributes to lower back pain and sciatica 2,6 even in the absence of a bulging annulus fibrosus, herniated nucleus pulposus, or osseous spurs.…”

Section: Introductionmentioning

confidence: 99%

“…2,3 The LF connects two adjacent laminae and lines an important part of the osseous and soft tissue sections of the posterior epidural region. 4,5 Hypertrophy of the LF is considered an important causative factor in the development of lumber spinal stenosis, compression of the dural sac and roots, and significantly contributes to lower back pain and sciatica 2,6 even in the absence of a bulging annulus fibrosus, herniated nucleus pulposus, or osseous spurs. 7,8 The LF is an important anatomical structure, which might cause lower back or leg pain.…”

Section: Introductionmentioning

confidence: 99%

Assessment of ligamentum flavum thickness correlation with demographic variables and disc degeneration in Erbil governorate population sample

Akreyi

Awdish

2012

ZJMS

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Background and objectives:This study aimed to investigate the correlation between the ligamentum flavum thickness and age, sex, body mass index and type of disc degeneration. Method: 126 consecutive patients were examined prospectively. The sample included all the patients who had an MRI examination after they presented to Rizgary teaching hospital complaining of lower back and/or leg pain. The LF thickness was measured by using lumbo-sacral spine MRI. Results: The mean thickness of LF was more at L4-L5 (right: 0.27 mm, left 0.25 mm), L5-S1 (right: 0.25 mm, left 0.25 mm) levels, and was thicker on the right side. LF was thicker in females than males with a statistically significant measurement at L2-L3, L3-L4 and L4-L5 levels. The mean thickness of LF was more at older age group than the younger age groups, and the results were statistically different at left side of L2-L3 and right side of L4-L5 level. Thickness of LF was more among those with higher BMI for all levels except for L5-S1. In most cases, LF was thicker in patients with advanced disc degeneration. Conclusion: Thickening of the LF is associated to some extent with sex, age, BMI and disc degeneration. Thickening of the LF is potentially due to its buckling into the spinal canal secondary to disc degeneration more than to LF hypertrophy. Further research is needed to confirm these associations.

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Hypertrophied Ligamentum Flavum

Cited by 70 publications

References 16 publications

Unilateral laminotomy for bilateral decompression of lumbar spinal stenosis

Unilateral laminotomy for bilateral decompression of lumbar spinal stenosis

Morphology and clinical importance of epidural membrane and periradicular fibrous tissue in lumbar spinal stenosis

Assessment of ligamentum flavum thickness correlation with demographic variables and disc degeneration in Erbil governorate population sample

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