Morphometric study of the orientation of lumbar zygapophyseal joints in a South Indian population

Mohanty, S. P.; Kanhangad, Madhava Pai; Kamath, Surendra U.; Kamath, Asha

doi:10.1177/2309499017739483

Cited by 14 publications

(21 citation statements)

References 13 publications

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“…Previous researchers have used unherniated segments adjacent to the herniated levels as controls [ 1 2 , 15 , 18 , 25 ]. However our study results showed a significant difference in the mean ZJA at different levels of the lumbar spine, similar to those of previous studies [ 5 , 13 , 26 ]. Therefore, we compared the mean ZJA and FT in patients with IVDP at L4–L5 and L5–S1 with corresponding unherniated levels, without using adjacent lumbar levels as controls.…”

Section: Discussionsupporting

confidence: 92%

Zygapophyseal Joint Orientation and Facet Tropism and Their Association with Lumbar Disc Prolapse

Mohanty¹,

Kanhangad²,

Kamath³

et al. 2018

Asian Spine J

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Study DesignCross-sectional study.PurposeTo evaluate the association between zygapophyseal joint angle (ZJA), facet tropism (FT), and lumbar intervertebral disc prolapse (IVDP).Overview of LiteratureSeveral studies have shown that FT increases the risk of IVDP and have postulated that a more sagittally oriented zygapophyseal joint provides less mechanical resistance to axial torque, thereby exerting excessive rotational strain on the intervertebral disc, resulting in an annular tear. In contrast, other studies have found no definitive association between FT and IVDP. Therefore, conclusive evidence regarding the role of FT in the pathogenesis of disc prolapse is currently lacking.MethodsMagnetic resonance imaging scans of 426 patients with single-level lumbar IVDP were analyzed. Right and left ZJAs of the lumbar segments were measured on axial sections. The frequency and severity of FT were determined by calculating the absolute difference between the right and left ZJAs. Patients without IVDP at L4–L5 and L5–S1 served as controls for those with IVDP at L4–L5 and L5–S1, respectively. Chi-square test and t-test were used to compare the severity and frequency of FT between patients with and without IVDP. The receiver operating characteristic analysis was performed to determine the critical FT values that were predictive of IVDP.ResultsPatients with IVDP exhibited a higher frequency (L4–L5: 47% vs. 15.08%; L5–S1: 39.62% vs. 22.69%; p=0.001) and severity (L4–L5: 7.85°±3.5° vs. 4.05°±2.62°; L5–S1: 7.30°±3.07° vs. 4.82°±3.29°; p <0.001) of FT than those without IVDP. Critical FT values of 5.7° at L4–L5 and 6° at L5–S1 increased the likelihood of IVDP by a factor of 2.89 and 1.75, respectively.ConclusionsOur results confirm the existence of a significant association between lumbar IVDP and FT; however, a causal relationship could not be ascertained.

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Section: Discussionsupporting

confidence: 92%

Zygapophyseal Joint Orientation and Facet Tropism and Their Association with Lumbar Disc Prolapse

Mohanty¹,

Kanhangad²,

Kamath³

et al. 2018

Asian Spine J

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“…There is currently no universal consensus about the consideration of clinically significant LFJT. Hence, LFJs angulation may normally vary from 5 to 10 degrees Authors concluded that these results may offer an explanation for the more frequent occurrence of lumbar disc herniation and related degenerative disorders as lumbar arthrosis and degenerative spondylolisthesis encountered at these levels [23]. This thesis has been also adopted from other studies in recent literature [3,14,26].…”

Section: Lfjs Tropism (Lfjt)mentioning

confidence: 89%

“…The three-dimensional LFJs and the anteriorly located intervertebral disc at each lumbar spine level compose an anatomic entity described as spinal segment, "three-joint complex" or articular triad [15,16,21,23,26,32,38]. These articular structures are theorized to constitute a single unit since the emergence of degenerative alterations in one joint has a subsequent influence on the biomechanic behavior of the whole unit [26].…”

Section: Biomechanical Datamentioning

confidence: 99%

Anatomy of lumbar facet joint: a comprehensive review

Kapetanakis

Gkantsinikoudis

2021

Folia Morphol

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Lumbar Facet Joints (LFJs) are diathrodial joints which provide articulation between two adjacent lumbar vertebrae. LFJs represent complex anatomic structures with multifaceted biomechanic and functional characteristics. They are theorized as structures of crucial clinical significance since their degenerative morphologic alterations are frequently related to emergence of low back pain. Despite the emerging interest in describing LFJs anatomy in recent years, precise description of LFJs innervation remains controversial. In this comprehensive review, anatomy and biomechanical importance of LFJs and associated adjacent extra-articular structures are thoroughly presented. Furthermore, LFJs innervation in respect to current literature data is punctually analyzed. Knowledge of anatomy and innervation LFJs of critical importance for clinicians and spine surgeons, so that patients are properly evaluated and related therapeutic procedures are rationally performed.

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“…other causes of low backache include abnormal orientation of joints (Mohanty et al, 2017). Many cases of spinal canal stenosis have found to have some relation with the anatomical differences.…”

Section: Introductionmentioning

confidence: 99%

Morphometric Study of Lumbar Vertebrae in South Indian Population

Ali¹

2020

Biosci. Biotech. Res. Comm

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The lumbar vertebrae consists of five cylindrical bones that form the spine in the lower back. These vertebrae carry all of the overlying body's weight while providing flexibility and movement to the trunk region. They also protect the delicate spinal cord and nerves within their vertebral canal. The dimensions of lumbar vertebrae should be understood for clinical diagnosis of diseases.The aim of the study is to study about the lumbar vertebrae morphometrically. A total number of 70 dry human lumbar vertebrae were used of which 40 were of males and 30 were of females were obtained from the Department of Anatomy, Saveetha Dental college and Hospitals, Chennai and Sri Ramachandra Medical College and Research Institute, Chennai.The anteroposterior body diameter, transverse body diameter, interpedicular distance and midsagittal diameter was measured using Vernier caliper.The average, mean and standard deviation were calculated. In the present study, the mean Anteroposterior body diameter was found to be 32.15 mm ± 1.0627 in males and 27.04 mm ± 0.3170 in females. The average transverse body diameter was found to be 45.06 mm ± 0.3637 in males and 40.92 mm ± 0.3074 in females. The average interpedicular distance was found to be 26.50 mm ± 0.39 in males and 25.42 mm ± 0.3028 in females. The average midsagittal diameter was found to be 17.96 mm ± 0.2597 in males and 16.94 mm ± 0.2313 in females. The present study concluded that the dimensions of lumbar vertebrae for the South Indian population showed significant differences between males and females. The measurements were higher in males than females.

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Morphometric study of the orientation of lumbar zygapophyseal joints in a South Indian population

Cited by 14 publications

References 13 publications

Zygapophyseal Joint Orientation and Facet Tropism and Their Association with Lumbar Disc Prolapse

Zygapophyseal Joint Orientation and Facet Tropism and Their Association with Lumbar Disc Prolapse

Anatomy of lumbar facet joint: a comprehensive review

Morphometric Study of Lumbar Vertebrae in South Indian Population

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