Morphometry of the lumbar spine

Olsewski, John M.; Simmons, Edward H.; Kallen, Frank C.; Mendel, Frank C.; Severin, Charles M.; Berens, David L.

doi:10.2106/00004623-199072040-00011

Cited by 120 publications

(24 citation statements)

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“…Olsewski [8] in the US reported in his series on lumbar spine morphometry in 51 patients, similar results to ours in terms of vertebral width, but with a higher alpha angle. The variations observed with our results, especially at the level of the first two vertebrae in humans, could be explained by the small size of their sample, especially since some values in our sample are beyond their average.…”

Section: Comments and Discussionsupporting

confidence: 91%

Morphometric Study of the Lumbar Spray in the African Black West Subject: Interest in Surgery. About a CT Scans of 170 Cases in Ouagadougou (Burkina Faso)

Tall¹,

Sawadogo²,

Kasse³

et al. 2018

OJO

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Objective: Our study aimed at analyzing the morphometry of the lumbar spine at the CT scan and to specify its interest in spinal surgery. Methodology: This was a prospective study conducted from May 1, 2011 to July 31, 2011 in Ouagadougou. During this study, 170 patients aged 45.3 ± 12.5 years old with a sex ratio of 1.15 received a CT scan. The symptomatology was dominated by low back pain (60.6%) and lumbar osteoarthritis was the most common etiology (51.8%). The measurements were performed directly on axial and sagittal sections of the lumbar spine with measurement of the vertebral body, and pedicles. Results: The vertebral body increased forward from 24.9 mm in L1 to 26.7 mm in L5 and decreasing backwards from 26.6 mm in L1 to 23.4 mm in L5. The transverse diameter of the vertebral body ranged from 37 mm in L1 to 47.4 mm in L5 and the anteroposterior diameter of 27.6 mm in L1 to 33.5 mm in L5. The lumbar canal had an anteroposterior diameter that ranged from 15.9 mm in L1 to 15.5 mm in L5 and an interpedicular distance increasing from 21.54 mm in L1 to 28.42 mm in L5. The pedicle decreased in length from L1 (9.5 mm) to L5 (6.5 mm) while its width increased from 6.9 mm in L1 to 15.1 mm in L5. Its axis formed, with respect to the sagittal plane, an increasingly obtuse angle varying from 16.3 degrees in L1 to 29.1 degrees in L5 and with respect to the upper plate of the vertebral body, an increasingly acute angle (14, 2 degrees in L1 at 8.8 degrees in L5). Conclusion: The dimensions of the lumbar vertebrae in our series differ from those noted in Western populations in that they have a smaller vertebral body, a shorter, wider pedicle with an angle of inclination of the pedicle compared to the saHow to cite this paper: Tall, M., Sawadogo, M.,

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Section: Comments and Discussionsupporting

confidence: 91%

Morphometric Study of the Lumbar Spray in the African Black West Subject: Interest in Surgery. About a CT Scans of 170 Cases in Ouagadougou (Burkina Faso)

Tall¹,

Sawadogo²,

Kasse³

et al. 2018

OJO

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“…The longest PTLP in our study was 55.31 mm (SD ± 4.52 mm) at L4, at the left pedicle in males and the shortest at T9, at the right pedicle in females, with a mean of 39.44 mm (SD ± 3 mm). However, Zindrick et al [20] found the longest PTLP (through pedicle axis) at L2 and L3 that was 51.9 mm (ranges 45.0–58.0 and 42.0–62.0 mm, respectively), Olsewski et al [21] at L4, and Vaccaro et al [22] at T12.…”

Section: Discussionmentioning

confidence: 99%

Morphometric characteristics of the thoracοlumbar and lumbar vertebrae in the Greek population: a computed tomography-based study on 900 vertebrae—“Hellenic Spine Society (HSS) 2017 Award Winner”

et al. 2019

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Background Vertebrae morphology appears to have genetic and ethnic variations. Knowledge of the vertebra and pedicle morphology is essential for proper selection and safe application of transpedicular screws. The aim of this study is to create a morphometric database for thoracolumbar and lumbar vertebrae (T9–L5) among individuals of both sexes in the Greek population. Material and methods The morphometric dimensions of T9–L5 vertebrae on computed tomography (CT) scan images were measured in 100 adults (79 males and 21 females), without spinal pathology, age from 33 to 87 years old (mean 70 ± 8.73 years). The anterior vertebral body height (AVBH), the posterior vertebral body height (PVBH), the angle formed by the upper end plate of vertebral body and the horizontal line in the sagittal plane, the inner cancellous and outer cortical pedicle height and width, the angle formed by the longitudinal trajectory of the right- and left-sided pedicles and the midline anteroposterior axis of the vertebra (pedicle axis angle (PAA)), and the postero-anterior trajectory’s length of the pedicle from the entry point to the anterior cortex of the vertebra (PTLP), for the right- and left-sided pedicles, were calculated. The Mann-Whitney U tests were conducted to compare the differences in various morphometric characteristics between sexes. The collected data were statistically analyzed using the SAS/STAT software 3.1.3 and SPSS version 22. The statistical significance was set at the level of p < 0.05. The intra- and inter-observer reliability of the measured parameters was also calculated. Results The L5 vertebra had the maximum AVBH with a mean of 28.47 mm (SD ± 2.55 mm) in males and 26.48 mm (SD ± 1.61 mm) in females. The maximum PVBH in males was at L1 vertebra with a mean of 27.77 mm (SD ± 1.64 mm) and in females at L2 vertebral with a mean of 27.11 mm (SD ± 1.27 mm). Regarding the left pedicle dimensions , the maximum inner cancellous and outer cortical pedicle height was at T11 with a mean of 12.86 mm (SD ± 1.26 mm) and 18.82 mm (SD ± 1.37 mm) in males and 10.24 mm (SD ± 1.88 mm) and 16.19 mm (SD ± 3.27 mm) in females, respectively. The maximum inner cancellous and outer cortical pedicle width was at L5 with a mean of 11.57 mm (SD ± 1.97 mm) and 17.08 mm (SD ± 1.97 mm) in males and 10.24 mm (SD ± 1.88 mm) and 16.27 mm (SD ± 3.27 mm) in females, respectively. The largest PAA was found at the L5 with a mean angle of 26.23° (SD ± 2.65°) in males and 23.63° (SD ± 4.59°) in females, respectively. The maximum PTLP was found at the level of L4 with a mean of 55.31 mm (SD ± 4.52 mm) in males and 48.7 mm (SD ± 4.17 mm) in females, respectively. Regarding the right pedicle dimens...

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“…The pedicle longitudinal axis was marked through the mid-pedicle level, which was defined as pedicle diameter (PD), as adopted by Olsewski et al [6] (Fig. 2) The distance from the lamina to the anterior cortex along the AP midline axis was defined as the midline axis distance (MAD), as reported by Zindrick et al [15] (Fig.…”

Section: Methodsmentioning

confidence: 99%

“…Morphometric studies have been performed using direct measurements on cadavers or radiologic measurements in CT scans among different Caucasian [6–8], Indian [9, 10], Korean [11] and Chinese [12] populations. Anatomic differences and variations among Caucasian and Taiwanese populations have also been reported [13].…”

Section: Introductionmentioning

confidence: 99%

What is the difference in morphologic features of the lumbar vertebrae between Caucasian and Taiwanese subjects? A CT-based study: implications of pedicle screw placement via Roy-Camille or Weinstein method

Lin

Wang

Lin

et al. 2019

BMC Musculoskelet Disord

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Background Safe placement of pedicle screws without jeopardizing neurovascular structures medially and anteriorly is important during spine surgery. Inferior breach of pedicle is also dangerous due to low margin of error. Lumbar morphology and identical pedicle orientation at L1 to L5 shown on CT scan of young Taiwanese patients (90 patients) were analyzed and compared with findings reported for Caucasian subjects. Methods Previously reported techniques were employed to quantitatively elucidate the parameters regarding lumbar morphology and identical pedicle orientation at each vertebra. The parameters for pedicle angle (PA), pedicle diameter (PD), pedicle axis distance (PAD), midline axis distance (MAD), transverse pedicle axis distance (TPAD) and transverse intertangential angle (TITA) were measured. Results Taiwanese subjects had different PA, PD, PAD, MAD at L1 to L5 and TITA at L3 to L5 compared with Caucasian subjects. L5 had the most convergent pedicle axis, the widest PD and the shortest antero-posterior axis morphology. Conclusions This study provides detailed information for identifying pedicle orientation during pedicle screw placement and elucidate racial differences in lumbar morphology and pedicle orientation between Taiwanese and Caucasian populations.

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Morphometry of the lumbar spine

Cited by 120 publications

References 0 publications

Morphometric Study of the Lumbar Spray in the African Black West Subject: Interest in Surgery. About a CT Scans of 170 Cases in Ouagadougou (Burkina Faso)

Morphometric Study of the Lumbar Spray in the African Black West Subject: Interest in Surgery. About a CT Scans of 170 Cases in Ouagadougou (Burkina Faso)

Morphometric characteristics of the thoracοlumbar and lumbar vertebrae in the Greek population: a computed tomography-based study on 900 vertebrae—“Hellenic Spine Society (HSS) 2017 Award Winner”

What is the difference in morphologic features of the lumbar vertebrae between Caucasian and Taiwanese subjects? A CT-based study: implications of pedicle screw placement via Roy-Camille or Weinstein method

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