Influence of age and sex on lumbar vertebral morphometry determined using sagittal magnetic resonance imaging

Sevinç, Özdemir; Barut, Çağatay; İş, Merih; Eryoruk, Nesrin; Şafak, Alp Alper

doi:10.1016/j.aanat.2007.04.005

Cited by 18 publications

(13 citation statements)

References 37 publications

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“…Unfortunately, the operative corridor is reported by Regev et al as a percentage of the vertebral body diameter, which renders the data less clinically useful. There are wide variations in vertebral body diameters between individuals [8] and therefore our data more clearly convey the proportion of patients vulnerable to neurovascular injury during ''typical'' LTIF surgery utilizing currently available implants. Similarly, cadaveric studies by Moro et al [5] and Benglis et al [1] found the lumbar plexus location at L4-5 was relatively anterior to other levels although Benglis et al described the position of the posterior aspect of the lumbar plexus in relationship to the posterior aspect of the adjacent endplate which seems less clinically relevant than referencing off the anterior vertebral body.…”

Section: Discussionmentioning

confidence: 86%

Anatomy of the psoas muscle and lumbar plexus with respect to the surgical approach for lateral transpsoas interbody fusion

et al. 2010

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Lateral transpsoas interbody fusion (LTIF) is a minimally invasive technique that permits interbody fusion utilizing cages placed via a direct lateral retroperitoneal approach. We sought to describe the locations of relevant neurovascular structures based on MRI with respect to this novel surgical approach. We retrospectively reviewed consecutive lumbosacral spine MRI scans in 43 skeletally mature adults. MRI scans were independently reviewed by two readers to identify the location of the psoas muscle, lumbar plexus, femoral nerve, inferior vena cava and right iliac vein. Structures potentially at risk for injury were identified by: a distance from the anterior aspect of the adjacent vertebral bodies of \20 mm, representing the minimum retraction necessary for cage placement, and extension of vascular structures posterior to the anterior vertebral body, requiring anterior retraction. The percentage of patients with neurovascular structures at risk for leftsided approaches was 2.3% at L1-2, 7.0% at L2-3, 4.7% at L3-4 and 20.9% at L4-5. For right-sided approaches, this rose to 7.0% at L1-2, 7.0% at L2-3, 9.3% at L3-4 and 44.2% at L4-5, largely because of the relatively posterior right-sided vasculature. A relationship between the position of psoas muscle and lumbar plexus is described which allows use of the psoas position as a proxy for lumbar plexus position to identify patients who may be at risk, particularly at the L4-5 level. Further study will establish the clinical relevance of these measurements and the ability of neurovascular structures to be retracted without significant injury.

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Section: Discussionmentioning

confidence: 86%

Anatomy of the psoas muscle and lumbar plexus with respect to the surgical approach for lateral transpsoas interbody fusion

et al. 2010

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“…[10,25,28] Change in concavity index with aging is controversial because both increase and decrease in concavity index with aging were reported in the literature. [6,10,17,20,29] The present study demonstrated decrease in concavity index with aging in both genders.…”

mentioning

confidence: 78%

“…[14] However, subsequent studies have shown that the anterior disc height increased steadily in first five decades in both age in both genders and decreased afterwards. [15][16][17] Berlemann et al, [6] in their cadaver study, indicated that degenerative changes due to aging might reduce disc height. On the other hand, Twomey and Taylor [18] reported in their radiographic study on people aged 20-35 years and over 60 years that there was a clear upward trend in disc heights with increasing age.…”

Section: Discussionmentioning

confidence: 99%

Intervertebral disc heights and concavity index of the lumbar spine in young healthy adults

Demır¹,

Atay²,

Seringec³

et al. 2018

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Objectives: The aim of this study was to investigate lumbar intervertebral disc heights and concavity index of the lumbar spine, and the influence of age, gender, weight, height and body mass index (BMI) on these parameters. Methods:The study was conducted on 150 health young subjects (age 18 to 27) without any disorder which affects the lumbar spine and the discs. Subjects underwent standard standing lateral lumbar radiography. Mann-Whitney U test and Spearman's correlation test were used for statistical analysis.Results: Of the 150 subjects (age range, 18-27 years), 80 (53.3%) were women and 70 (46.7%) were men. Men presented higher lumbar disc values than women. In both genders, disc height increased from T12-L1 to L4-L5, and then decreased at L5-S1. The heights of all lumbar discs increased with age, weight, height and BMI in both genders. Women demonstrated a higher concavity index at L2, L3 and L4 vertebrae compared to men, whereas men showed a higher concavity index value at L5 vertebra. The concavity index of T12, L1, L2, L3 and L4 vertebrae decreased with age. Conclusion:Our results will serve as guidelines and references for further studies, radiologists and spinal surgeons.

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“…Then, facet degeneration occurs. The vertebral bodies are also involved in the degenerative process, not only in osteophyte formation but also in the loss of vertebral height [1,11,12]. Vertebral height loss occurs for two reasons.…”

Section: Discussionmentioning

confidence: 99%

An increase in height of spinous process is associated with decreased heights of intervertebral disc and vertebral body in the degenerative process of lumbar spine

et al. 2013

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Purpose Currently degeneration of the intervertebral disc and joint in the degenerative process of the lumbar spine has mainly attracted the attention, however, there are very few literatures focusing on the height of the spinous process. Our objective was to examine in what generation the change in spinous process height occurs and how the change is involved in the degenerative process of the lumbar spine. Methods CT or CT myelography of 1,015 patients, 536 males and 579 females were measured in 6 items, including the heights of the L4 and L5 vertebral bodies, the L4 and L5 spinous processes, the L4/5 intervertebral disc, and the L5/S1 intervertebral disc. All data of the 6 items were analyzed and compared between gender in 5 age groups (40s, 50s, 60s, 70s and 80s). Results The results indicated a significant increase in the height of the L4 and L5 spinous process (P \ 0.01) in the 60-to 70-year-old group for both genders, and also showed that the L4 and L5 vertebral body height was significantly decreased in the 50-to 60-year-old group (P \ 0.01 in males, P \ 0.001 in females). Conclusions Changes in the spinous process morphology followed degenerative changes of the intervertebral disc and vertebral body in the degenerative process of the lumbar spine. This result may suggest that the morphological change of an increase in the height of the spinous process may be a kind of biological defense reaction to stabilize the intervertebral portion.

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Influence of age and sex on lumbar vertebral morphometry determined using sagittal magnetic resonance imaging

Cited by 18 publications

References 37 publications

Anatomy of the psoas muscle and lumbar plexus with respect to the surgical approach for lateral transpsoas interbody fusion

Anatomy of the psoas muscle and lumbar plexus with respect to the surgical approach for lateral transpsoas interbody fusion

Intervertebral disc heights and concavity index of the lumbar spine in young healthy adults

An increase in height of spinous process is associated with decreased heights of intervertebral disc and vertebral body in the degenerative process of lumbar spine

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