Morphometry and Sexual Dimorphism of Lumbar Pedicles in Dry Bones of Maharashtra Region (original) (raw)
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Morphometric study of width and height of lumbar pedicles in population of Haryana
International Journal of Applied Dental Sciences, 2017
Pedicles form an important part of lumbar spine. They help in transmission of weight in lumbar spine. The Present study is done on 30 adult human lumbar vertebrae. 23 skeletons are of males & 7 are of females. Sliding Digital Vernier Caliper is used to measure height and width of Lumbar pedicles. Analysis showed positive correlation in width of levels and the width being maximum at L5. The height of lumbar pedicles showed negative correlation from L3 to L5 levels.
Cureus
Introduction: The lumbar vertebrae are the largest vertebrae of the vertebral column, which support the maximum body weight. There has been an increased focus on transpedicular spinal fixation for addressing various lumbar spine pathology. However, its safety and efficacy require precise knowledge of the lumbar pedicle anatomy. Mismatched size of screw and pedicle may lead to failure of instrumentation. It may result in cortex perforation or pedicle fracture and loosening of the pedicle screw. The oversizing of the pedicle screw can result in dural tears, leakage of the cerebrospinal fluid, and injuries to the nerve root. As the racial variations in the anatomy of a pedicle are well known, this study was performed to assess the morphological parameters of the lumbar vertebrae pedicles in the Central Indian population so that the appropriate sizes of pedicular implants can be selected. Material and methods: The present study was conducted at a tertiary-level hospital and medical college on dry lumbar vertebrae specimens available in the department of anatomy. The measurement of morphometric parameters of the lumbar vertebrae pedicles was performed in 20 dry lumbar specimens using vernier calipers and a standard goniometer. The morphometric parameters included in the study are pedicle transverse external diameter (pedicle width), pedicle sagittal external diameter (pedicle height), transverse angle of the pedicle, and sagittal angle of the pedicle. Statistical analysis was performed using Statistical Package for the Social Sciences (SPSS) system version 25 (Chicago, IL: SPSS Inc.). Results: The broadest external transverse diameter was at the L5 level, with a mean of (17.54±1.6 mm) in the lumbar vertebrae. The broadest external sagittal pedicle diameter was at the L1 level (13.7±0.88 mm). The maximum transverse angle of the pedicle was at L5 with a mean of 25.39±3.10°. The maximum sagittal angle was at L1 with a mean of 5.44±0.71°. Conclusion: The increased concern regarding the internal fixation of the spine with pedicle screw systems created the need to have almost accurate anatomical knowledge of lumbar pedicles. Due to the dynamic nature of the lumbar spine and the body's load, maximum degeneration occurs at this spine segment, making it the most commonly operated region of the vertebral column. In our study, pedicle dimensions are comparable to populations of other Asian countries. However, the pedicle dimension of our population is lower than the White American population. This morphological variation of pedicle anatomy will help surgeons choose appropriate size screws and optimum angulations to insert the implant, decreasing complications.
The Effect of Gender on Dimensions of Lumbar Vertebral Pedicle Using Computed Tomography
Journal of Babol University of Medical Sciences, 2019
BACKGROUND AND OBJECTIVE: Having the correct anatomical points and the size of the pedicle dimension is necessary to minimize neurological complications. Currently, the gold standard for spinal fusion is the use of pedicle screws. In this method, the pedicle screw should be placed in its ideal position. Given the importance of this topic, the present study was performed to determine the dimensions of right and left pedicle by computed tomography (CT) scan in three axial, coronal and sagittal planes based on gender in Fars-native ethnic group. METHODS: This cross-sectional study was performed on 40 patients (20 females and 20 males aged 18-45 years) from Fars-native ethnic group. The average height for males was 165 to 180 cm and for females between 165 and 175 cm. Healthy vertebrae were selected in people who referred to a CT scan unit with symptoms of spinal pain or trauma. Determination of height, length and width of right and left pedicle of lumbar vertebrae in axial, coronal and sagittal view in 1.5 mm sections was performed by CT scan. FINDINGS: Mean and standard deviation of height (1.458±0.141), width (0.788±0.173), and length (1.248±0.195) of pedicle in men (based on millimeter) was significantly higher compared to mean and standard deviation of height (1.268±0.140), width (0.618±0.148), and length (1.08±0.174) in women (p<0.05). CONCLUSION: The results of this study showed that gender affects the dimensions of lumbar vertebral pedicle.
A Morphometric Study of the Vertebral Body in Dry Human Typical Lumbar Vertebrae
Indian Journal of Anatomy, 2019
Background: The knowledge of various morphometric measurements of the vertebral body is essential for neurosurgeons and spinal surgeons for performing various operative procedures on the lumbar spine. The present study aims to create a morphometric database pertaining to the bodies of typical lumbar vertebrae. Objective: To measure the various dimensions of vertebral body in typical lumbar vertebrae. Material and methods: Two hundred dry human typical lumbar vertebrae of undetermined gender and age were selected for the study. The various parameters of vertebral body were measured. Results: The anteroposterior distance of the vertebral body in typical lumbar vertebrae ranged from 23.44 to 36.74 mm with a mean of 29.55 ± 2.93 mm. The transverse diameter of the vertebral body ranged from 33.54 to 54.06 mm with a mean of 42.37 ± 3.99 mm. The vertebral body width ranged from 29.26 to 48.98 mm with a mean of 37.23 ± 3.68 mm. The anterior height of the body ranged from 17.06 to 29.26 mm with a mean of 24.03 ± 2.14 mm. The posterior height of the body ranged from 17.84 to 31.42 mm with a mean of 25.28 ± 2.16 mm. Conclusion: The results provide a comprehensive database which will be helpful for designing of vertebral body instrumentations for Indian population.
A morphometric analysis of pedicles of lumbar vertebrae by using computed tomography scan
Journal of Kathmandu Medical College
Background: The vertebral column is the central pillar of the body which has cervical, thoracic, lumbar, sacral and coccygeal parts. Out of these, the lumbar part is made up of five lumbar vertebrae which lies between the thoracic part above and the sacral part below. Objective: The study aimed to measure pedicle dimensions of lumbar vertebrae by using computed tomography scan. Methodology: This is a descriptive cross-sectional study which was conducted on 115 images of computed tomography scan collected from the Department of Radio-Diagnosis, Dhulikhel Hospital between May and October 2019 after receiving ethical approval from the Institutional Review Committee. All the scans available in the department were taken for the study. Point estimate at 95% Confidence Interval was calculated along with frequency and proportion for binary data. Data analysis was done in the Statistical Package for the Social Sciences version 16 (SPSS 16.0). Results: The pedicle chord length and breadth pr...
A study of metric measurement of lumbar vertebrae in the population of central India.
The need for a quantitative data base for geometrical and mechanical models of the vertebral column is expressed often by researchers and practitioners, but no comprehensive anthropometric survey for spinal segment modeling has been published. The purpose of this paper is to present a set of anthropometric measurements on dried cadaveric lumbar vertebrae. This includes statistical analysis for distributions of the various dimensions, relations and correlations of vertebral dimensions. The Present study was conducted on 210 adult lumbar vertebrae in department of Anatomy, R.D. Gardi Medical College, Ujjain, India. The Height, length, width of vertebral body, of lumbar vertebrae were measured with the help of Sliding Vernier Caliper. There was a gradual increase in the transverse diameter of the body of vertebra from L 1-L 5. There was also a- increase in the antero- posterior diameter from L 1 to L5.
A Morphometric Study of Lumbar Spine Pedicles in Nepalese Population
Journal of College of Medical Sciences-Nepal, 2015
Background and Objective: In this observational study, morphometric data were obtained and analyzed by taking plain x-rays in various age groups to establish the morphometric values in Nepalese population.Methods: All the pedicle dimensions were measured by taking plain x-ray AP (Antero-posterior) and Lateral view of the lumbar spine in 246 Nepalese of different age groups. Pedicle diameters (Vertical and Horizontal) and interpedicular distance were measured in AP radiographs and sagittal angle was measured in the lateral radiographs. Differences between mean dimensions of pedicles of male and female of various age groups were tested by using ANOVA, independent t-test was used to test the individual mean dimensions.Results: Mean values of the pedicle dimensions were found as: Horizontal diameter (L1=7.17mm, L2=7.26mm, L3= 9.50mm, L4= 10.57mm and L5=11.3mm), Vertical diameter (L1= 15.00mm, L2=15.28mm, L3=15.21mm, L4=13.44mm and L5= 12.59mm), Interpedicular distance (L1= 25.54mm, L2 =...
Study of Pedicles in Dried Human Lumbar Vertebra : A Morphometric Analysis
IAHS Medical Journal
Background: In the dynamic part of the spinal column the lumbar vertebra are the largest vertebra that support the maximum body weight and exhibit the greatest degree of degenerative changes. Pedicles of the vertebra act as a port to perform procedures inside the bodies of the vertebra such as biopsies, vertebroplasties or kyphoplasties. Pedicle screw fixation is a technically demanding procedure. Accurate anatomical knowledge of the morphometry of vertebral pedicle are also important for preoperative procedure, planning and in the design and manufacture of pedicle screws. The objective of this study to observe the morphometry of lumbar pedicles to determine the size of the screw in transpedicular screw fixation on the perspective of Bangladesh. Materials and methods: A descriptive observational study was conducted at Southern Medical College and Hospital in the Department of Anatomy on 65 dry adult human lumbar vertebra from December 2020 to May 2021. Width height of pedicle along ...
Morphometry of Pedicle and Vertebral Body in a Mexican Population by CT and Fluroscopy
International Journal of Morphology, 2009
It is necessary to have precise anatomical knowledge of lumbar pedicles for the safe placement of screws. There are not reports about the morphometry of lumbar pedicles in a Mexican population exist. A descriptive, observational and cross-sectional study was done in 60 cadavers from the dissection lab of the Human Anatomy Department of the Medicine School. The aim of the study was to quantify the morphometric characteristics of the pedicles of the lumbar spine in a Mexican population. A total of 60 cadavers were evaluated by fluoroscopy and CT from L1 to L5, in the age range of 40 to 78 years. Each vertebral pedicle was measured in the axial, sagittal and coronal planes. The measurements included the minimum pedicle width, the pedicle angle, the distance to anterior cortex, and anteroposterior and interpedicular spinal canal diameters. CT evaluation showed a progressive and gradual increase in the width of the pedicles from L1 (7.81 ±1.30 mm) to L5 (14.36 ±14.36 mm). A progressive and gradual decrease of pedicle length from L1 (20.92 ±2.62 mm) to L5 (17.23 ±1.35 mm). When fluoroscopy was used there was the same relationship, but the values were higher than those obtained by CT. The values for widths and lengths are slightly higher in males than in females, but do not reveal any significant difference (p<0.05). The data in this study indicates that pedicle screws (5.5-6.5mm) may be used in the lumbar region.