Orientation of the articular processes at L4, L5, and S1 possible role in pathology of the intervertebral disc

Kenesi, C; Lesur, E.

doi:10.1007/bf01654628

Cited by 16 publications

(3 citation statements)

References 2 publications

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“…Kénési and Lesur [18] showed a correlation between facet asymmetry and the side of disc protrusion in the L5-S1 segment, which however was not present in the L4-L5 segment. They had found in their study that herniation is on the side of the more sagittal facet joint interface in three quarters of cases.…”

Section: Discussionmentioning

confidence: 94%

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Association of facet tropism with lumbar disc herniation

et al. 2012

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Purpose Facet tropism is defined as asymmetry between left and right facet joints and is postulated as a possible cause of disc herniation. In the present study, the authors used a 3-T MRI to investigate the association between facet tropism and lumbar disc herniation at a particular motion segment. They also examined whether the disc herniated towards the side of the more coronally oriented facet joint. Methods Sixty patients (18-40 years) with single level disc herniation (L3-L4, L4-L5, or L5-S1) were included in the study. Facet angles were measured using MRI of 3-T using the method described by Karacan et al. Facet tropism was defined as difference of 10°in facet joint angles between right and left sides. Normal disc adjacent to the herniated level was used as control. We also examined if disc herniated towards the side of more coronally oriented facet. Results Twenty-five herniations were at L4-L5 level and 35 at L5-S1. Statistical analysis was performed using the Fischer Exact Test. At L4-L5 level, 6/25 cases had tropism compared to 3/35 controls (p = 0.145). At L5-S1 level, 13/35 cases had tropism as compared to 1/21 controls (p = 0.0094). Of 19 cases having tropism, the disc had herniated towards the coronally oriented facet in six (p = 0.11). Conclusion The findings of the study suggest that facet tropism is associated with lumbar disc herniation at the L5-S1 motion segment but not at the L4-L5 level.

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Section: Discussionmentioning

confidence: 94%

“…There are numerous arguments for and against this hypothesis [8][9][10][11][12][13][14][15][16]. A correlation between facet asymmetry and the side of disc herniation (sagittal or coronal) is also debated [4,12,13,17,18].…”

Section: Introductionmentioning

confidence: 99%

Association of facet tropism with lumbar disc herniation

et al. 2012

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“…The intervertebral disc and the bilateral articular processes form a three‐joint complex which ensures the stability and the mobility of the spine in all spatial planes. Alteration of any component of this complex affects the other components (Kénési & Lesur, ; Liu et al ). The researchers (Rong et al ) suggested that facet tropism might be a risk factor for the development of cervical disc degeneration or facet degeneration.…”

Section: Discussionmentioning

confidence: 99%

The relationship between facet tropism and cervical disc herniation

Huang

Liu

et al. 2020

Journal of Anatomy

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Many studies have demonstrated the association between facet tropism and disc herniation in the lumbar spine. Some of them found that lumbar disc herniation was on the side of the more sagittal facet joint interface. However, little is understood about the association of facet tropism with disc herniation in the cervical spine. As the relationship between the facet orientation and the side of cervical disc herniation (CDH) is unclear, the purpose of this study is to investigate that relationship.Ninety-six patients with single-level CDH (C4-C5, C5-C6 or C6-C7) were included in the CDH group of this study. Another 50 age-matched and gender-matched healthy participants who accepted physical examinations were enrolled as the control group.The cervical facet angles of two sides were measured using axial computed tomography (CT). The intersection angle of the midsagittal line of the vertebra to the facet line represents the facet angle. Facet tropism was defined as the angular difference of 7º between the left and the right sides. Facet tropism angle was recorded as the absolute value of the difference of facet angles between two sides. There were 20 herniations at C4-C5 level, 50 herniations at C5-C6 level and 26 herniations at C6-C7 level.The present study showed that more cases in the CDH group had facet tropism than did those in the control group at C4-C5, C5-C6 and C6-C7 level (p = .021, p = .001, p = .015, respectively). The facet tropism angles in the CDH group were significantly bigger than those in the control group at C4-C5, C5-C6 and C6-C7 level (p = .001, p = .002, p = .028, respectively). In the CDH group, the facet angles on the herniated side were found to be significantly bigger than those on the healthy side at C4-C5, C5-C6 and C6-C7 level (p = .000, p = .000, p = .037, respectively). The findings of this | 917 HUANG et Al.present study suggest that facet tropism is associated with the disc herniation in the cervical spine. We also found that cervical disc herniates towards the side of the bigger facet angle with respect to the sagittal plane. There is a need for future studies to verify the biomechanical impact of facet tropism on CDH. K E Y W O R D Scervical spine, computed tomography, disc herniation, facet tropism, sagittal orientation

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Anatomy of the Thoraco-Lumbar Facet Joint

Louis¹,

Louis²

2019

Spinal Anatomy

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Orientation of the articular processes at L4, L5, and S1 possible role in pathology of the intervertebral disc

Cited by 16 publications

References 2 publications

Association of facet tropism with lumbar disc herniation

Association of facet tropism with lumbar disc herniation

The relationship between facet tropism and cervical disc herniation

Anatomy of the Thoraco-Lumbar Facet Joint

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