Ct aided morphometric measurements of various pedicle parameters in different age groups of Indian population (original) (raw)
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Asian Journal of Neurosurgery, 2019
Introduction: The study aims at providing an overview of morphometric measurements of the skull baselines in normal Indian population and compares these dimensions with those of other races and ethnicities. This study will help in defining “normal” baseline values for Indian population. It will also compare dimensions as measured on X-ray and computed tomography (CT) scan to assess the reliability of X-ray as a diagnostic modality for the assessment of the skull baselines in Indian population. Materials and Methods: Retrospective study with a sample size of 116 patients and duration of 30 months. Results: The mean value for distance between dens tip and Chamberlain line on CT was 0.498 mm and on X-ray was 0.528 mm and for the distance between dens tip and McGregor line on CT was 0.213 mm and on X-ray was 0.228 mm. The mean distance between the dens tip and McRae line was 4.67 1.69 mm on CT scan and 4.7 1.76 mm on X-ray. Conclusion: There was not a single patient in whom the dens tip...
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.
A cadaveric study for comparison of dorsal pedicular diameter in Indian males and females
International Journal of Orthopaedics Sciences, 2019
Introduction: A cadaveric study for comparison of dorsal pedicular diameters in Indian males and females. Morphometric study of pedicles of spine of dorsal region is thus relevant and critical for proper placement of the transpedicular screw to avoid inadvertent penetration of pedicular wall. Material and Methods: It's a observational study done at a tertiary health care centre in which 30 cadavers were studied using posterior midline approach. Direct measurements were taken on the vertebra with using a sliding vernier caliper Results: Thirty cadavers were studied out of which 23 were males and seven wee females. I studied vertical as well as horizontal diameter at the middle of pedicle and calculate mean of these two and did comparison between Indian males and females. When compared with males of the same height, females have thinner pedicles. This means the average diameter of the pedicular screws which is safe for the males at the particular level cannot be considered safe for females of the same height and age. Conclusion: On the basis of this study we have idea about average screw size for male and female at particular level to avoid untoward complication of current pedicular system. In males average diameter goes on increasing from D1to D12 with highest at D12-5.6mm while lowest at D2 and D3 i.e. 4.5 mm. In females we found average diameter goes on increasing from D1to D12 with highest diameter at D9 i.e, 5.2mm and lowest at D2 i.e. 4.2 mm. As compared to the males females have thinner pedicles.
Morphometry and Sexual Dimorphism of Lumbar Pedicles in Dry Bones of Maharashtra Region
International Journal of Anatomy and Research, 2017
Pedicle is strongest part of lumbar vertebra. The fixation of lumbar spine is needed for various spinal problems. The transpedicular screw fixation of lumbar spine is developed as a very successful method of spinal fixation. Morphometric data on the parameters of the pedicles is therefore useful in preoperative planning and designing of pedicle screws and other implantable devices. Identification of sex of an individual from the remains of skeleton has great medico legal significance. Aims and Objectives: To measure the height, thickness and length of lumbar pedicles in dry bones and find out sexual dimorphism in Maharashtra region. Materials and Method: 70 sets of known sex (35 male and 35 female) of lumbar vertebrae from L1 to L5 were obtained from Department of Anatomy of various Medical Colleges of Maharashtra region. The height, thickness and length of lumbar pedicles were measured by using digital vernier caliper. The data was statistically evaluated and seen for sexual dimorphism. Observations and Results: The height and length of pedicle increased from L1 to L3 and decreased up to L5 levels on right and left side in both sexes. The thickness of pedicle increased from L1 to L5 levels on both right and left side and in both sexes. Height (right side L1 to L4 and on left side at all vertebral levels) and thickness of lumbar pedicle (L1 to L3 on right side and L1, L2, L3 and L5 on left side) exhibited sexual dimorphic features in lumbar vertebrae. However, statistically significant difference was not observed in the length of pedicle. Conclusion: The present study confirmed that there are regional as well as racial variations in the parameters of lumbar pedicles. This necessitates the study of particular geographic area and population to find out the range of normal values for that particular population and thus can be helpful for instrumentation. Height & thickness of pedicle showed sexual dimorphic features particularly in L1 to L3 levels, which can be considered for sex determination. Present study can be useful in designing pedicle screw and also be helpful for anthropometric studies and forensic investigations.
Journal of international oral health : JIOH, 2015
The aim of this study was to verify the intra-individual reproducibility of natural head position (NHP) in centric relation (CR) position, to prove the inter-individual differences in the Frankfort horizontal plane and sella-nasion line compared with the true horizontal line, and to establish linear norms from A-point, B-point, Pog as well as soft tissue A-point, soft tissue B-point, and soft tissue Pog to nasion true vertical line (NTVL) in adult Indian subjects. Lateral cephalograms (T1) of Angle's Class I subjects were taken in NHP and with bite in CR. A second lateral cephalogram (T2) of these subjects with ANB angle in the range 1-4° were taken after 1 week using the same wax bite and both the radiographs were analyzed based on six angular parameters using cephalometric software (Do-it, Dental studio NX version 4.1) to assess the reproducibility of NHP. Linear values of six landmarks were taken in relation to NTVL, and the mean values were calculated. A total of 116 subject...
Quantitative morphology of Medial Longitudinal Arch among young Indian adults
IP Innovative Publication Pvt. Ltd., 2017
Introduction: Indian database on morphology of Medial Longitudinal Arch (MLA) especially in young adults is extremely limited. So the present study was undertaken to estimate quantitative morphology of MLA and to evaluate influence of demographic variables on it, in Indian young adult population from Gujarat region. Materials and Method: Various dimensions of MLA were measured with custom made Bronnack device in 1500 (670-male, 830-female) healthy volunteers of age 17-21yrs in non weight bearing & weight bearing positions which were plotted on paper for additional measurements. Statistical analysis was done using SPSS version 23.
Asian spine journal, 2017
A retrospective computed tomography (CT)-based morphometric study of 84 C1pedicles in an Indian population focusing on critical morphometric dimensions vis-a-vis C1 pedicle screw placement. To determine the feasibility of C1 pedicle screw placement in an Indian population and propose a novel classification system for the same. At present, C1 pedicle screws are rarely used, and very few studies have focused on the feasibility of pedicle screw placement in terms of racial, gender, and ethnic variations in anatomical structures. There are no CT-based data on C1 pedicles that assess the feasibility of pedicle screw placement in the Indian population. We measured C1 pedicle diameter on CT coronal scan images of 42 adult patients. Extramedullary height (EMH) and intramedullary height (IMH) were measured. We examined the differences between the right and left atlas pedicles and compared measures between males and females. These data were analyzed using significance tests. Based on the resu...
Evaluation of osteometric parameters of fibula and talar facet morphometry in Telangana region
IP Innovative Publication Pvt. Ltd, 2019
Introduction: Fibula the slender lateral bone of the leg has vast clinical and surgical application. The various osteometric parameters from both the ends and intervening shaft can be used to accurately assess the stature, nutritional status of an individual, determine the identity and gender, and aid in evaluation and surgical management of different ankle pathologies. Objective: The aim of this study was to evaluate osteometric parameters of fibula and Talar facet morphometry in Telangana region. Statistical analyses of these measurements, regional comparisons and correlations between these measurements are presented in this paper. Materials and Methods: Anthropometric evaluation of 74 dry, complete adult human fibulae was done. Measurement of 10 osteometric variables from different parts of the fibula and morphological analysis of talar facet have been undertaken results statistically analysed and tabulated. Results and Conclusions: The precise osteometric measurements of adult fibula in Telangana region have been presented in this paper. Significant correlation was found between the maximum length, mid shaft circumference, neck circumference, upper and lower epiphyseal breadth. This data has vast anthropometric, clinical, surgical, forensic and demographic application.
Morphometric analysis of calcaneum in Indian population with corellations with the Gait in Humans.
Measurements of bones give us information about the individual and the population it belongs to. In the present study, 30 (15 male-15 female) well-preserved calcaneus bones were evaluated in Department of Anatomy, AIIMS Bhubaneswar. With these bones, 7 linear measurements were measured. In calcaneus measurements, right-left side difference was determined in body height (BH) of the bone (P (P<0.05). A significant correlation was detected between all other linear bone measurements except for anteroposterior maximum length (MAXL) of calcaneus and width of calcaneal sulcus (WSC)(P<0.01). By regression of calcaneus measurements, anteroposterior length of the bone can be calculated up to 1mm.Calcaneus is one of the bones commonly used by anthropologists and forensic scientists as it is preserved well. Morphometric values of calcaneus and the analyses made shall contribute to anatomy science, orthopedic surgery, kinesiology and forensic sciences.
Analyzing variability of craniometric parameters using computed tomography scan in Indian population
Asian Journal of Medical Sciences
Background: The craniovertebral junction (CVJ) is a crucial region of the spine designed for optimal movements of head and is also a frequent site for various pathological processes. The importance of knowing the CVJ parameters in normal population cannot be overstated when instrumentation and correction of deformities in this region is so frequently being performed. There is paucity of data defining the craniometrics of CVJ osteology in Indian population on the literature search. Accordingly, we present a study in an attempt to quantitate the normal craniometric indices for anatomically normal CVJ in Indian population and compare them with the existing literature from other regions. Aims and Objectives: The aims of this study were to quantitate the normal craniometric indices for anatomically normal CVJ in Indian population and compare them with the existing literature from other regions. Materials and Methods: Two hundred and forty computed tomography (CTs) belonging to Indians we...