Coccygeal Morphology on Multislice Computed Tomography in a Tertiary Hospital in India

Study DesignA retrospective, cross-sectional study of 213 patients who presented for abdominal computed tomography (CT) scans to assess coccygeal morphology in the Indian population.PurposeThere have been relatively few studies of coccygeal morphology in the normal population and none in the Indian...

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Main Authors: Venkatraman Indiran, Vadivalagianambi Sivakumar, Prabakaran Maduraimuthu
Format: Article
Language:English
Published: Korean Spine Society 2017-10-01
Series:Asian Spine Journal
Subjects:
Online Access:http://www.asianspinejournal.org/upload/pdf/asj-11-694.pdf
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author Venkatraman Indiran
Vadivalagianambi Sivakumar
Prabakaran Maduraimuthu
author_facet Venkatraman Indiran
Vadivalagianambi Sivakumar
Prabakaran Maduraimuthu
author_sort Venkatraman Indiran
collection DOAJ
description Study DesignA retrospective, cross-sectional study of 213 patients who presented for abdominal computed tomography (CT) scans to assess coccygeal morphology in the Indian population.PurposeThere have been relatively few studies of coccygeal morphology in the normal population and none in the Indian population. We aimed to estimate coccygeal morphometric parameters in the Indian population.Overview of LiteratureCoccygeal morphology has been studied in European, American, Korean, and Egyptian populations, with few differences in morphology among populations.MethodsA retrospective analysis of 213 abdominal CT scans (114 males and 99 females; age, 7–88 years; mean age, 47.3 years) was performed to evaluate the number of coccygeal segments, coccyx type, sacrococcygeal and intercoccygeal fusion and subluxation, coccygeal spicules, sacrococcygeal straight length, and sacrococcygeal and intercoccygeal curvature angles. Results were analyzed for differences in morphology with respect to sex and coccyx type.ResultsTypes I and II coccyx were the most common. Most subjects had four coccygeal vertebrae; 93 subjects (43.66%) had partial or complete sacrococcygeal fusion. Intercoccygeal fusion was common, occurring in 193 subjects. Eighteen subjects had coccygeal spicules. The mean coccygeal straight length was 33.8 mm in males and 31.5 mm in females; the mean sacrococcygeal curvature angle was 116.6° in males and 111.6° in females; the mean intercoccygeal curvature angle was 140.94° in males and 145.10° in females.ConclusionsType I was the most common coccyx type in our study, as in Egyptian and Western populations. The number of coccygeal vertebrae and prevalence of sacrococcygeal and intercoccygeal fusion in the Indian population were similar to those in the Western population. The mean coccygeal straight length and mean sacrococcygeal curvature angle were higher in males, whereas the intercoccygeal curvature angle was higher in females. Information on similarities and differences in coccygeal morphology between different ethnic populations could be useful in imaging and treating patients presenting with coccydynia.
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spelling doaj.art-bba8a7c7c197456a874d4b61aef91b452022-12-22T02:55:54ZengKorean Spine SocietyAsian Spine Journal1976-19021976-78462017-10-0111569469910.4184/asj.2017.11.5.694275Coccygeal Morphology on Multislice Computed Tomography in a Tertiary Hospital in IndiaVenkatraman Indiran0Vadivalagianambi Sivakumar1Prabakaran Maduraimuthu2Department of Radiodiagnosis, Sree Balaji Medical College and Hospital, Chennai, India.Department of Radiodiagnosis, Meenakshi Medical College Hospital & Research Institute, Kanchipuram, India.Department of Radiodiagnosis, Sree Balaji Medical College and Hospital, Chennai, India.Study DesignA retrospective, cross-sectional study of 213 patients who presented for abdominal computed tomography (CT) scans to assess coccygeal morphology in the Indian population.PurposeThere have been relatively few studies of coccygeal morphology in the normal population and none in the Indian population. We aimed to estimate coccygeal morphometric parameters in the Indian population.Overview of LiteratureCoccygeal morphology has been studied in European, American, Korean, and Egyptian populations, with few differences in morphology among populations.MethodsA retrospective analysis of 213 abdominal CT scans (114 males and 99 females; age, 7–88 years; mean age, 47.3 years) was performed to evaluate the number of coccygeal segments, coccyx type, sacrococcygeal and intercoccygeal fusion and subluxation, coccygeal spicules, sacrococcygeal straight length, and sacrococcygeal and intercoccygeal curvature angles. Results were analyzed for differences in morphology with respect to sex and coccyx type.ResultsTypes I and II coccyx were the most common. Most subjects had four coccygeal vertebrae; 93 subjects (43.66%) had partial or complete sacrococcygeal fusion. Intercoccygeal fusion was common, occurring in 193 subjects. Eighteen subjects had coccygeal spicules. The mean coccygeal straight length was 33.8 mm in males and 31.5 mm in females; the mean sacrococcygeal curvature angle was 116.6° in males and 111.6° in females; the mean intercoccygeal curvature angle was 140.94° in males and 145.10° in females.ConclusionsType I was the most common coccyx type in our study, as in Egyptian and Western populations. The number of coccygeal vertebrae and prevalence of sacrococcygeal and intercoccygeal fusion in the Indian population were similar to those in the Western population. The mean coccygeal straight length and mean sacrococcygeal curvature angle were higher in males, whereas the intercoccygeal curvature angle was higher in females. Information on similarities and differences in coccygeal morphology between different ethnic populations could be useful in imaging and treating patients presenting with coccydynia.http://www.asianspinejournal.org/upload/pdf/asj-11-694.pdfCoccyxSacrococcygealAngleComputed tomography
spellingShingle Venkatraman Indiran
Vadivalagianambi Sivakumar
Prabakaran Maduraimuthu
Coccygeal Morphology on Multislice Computed Tomography in a Tertiary Hospital in India
Asian Spine Journal
Coccyx
Sacrococcygeal
Angle
Computed tomography
title Coccygeal Morphology on Multislice Computed Tomography in a Tertiary Hospital in India
title_full Coccygeal Morphology on Multislice Computed Tomography in a Tertiary Hospital in India
title_fullStr Coccygeal Morphology on Multislice Computed Tomography in a Tertiary Hospital in India
title_full_unstemmed Coccygeal Morphology on Multislice Computed Tomography in a Tertiary Hospital in India
title_short Coccygeal Morphology on Multislice Computed Tomography in a Tertiary Hospital in India
title_sort coccygeal morphology on multislice computed tomography in a tertiary hospital in india
topic Coccyx
Sacrococcygeal
Angle
Computed tomography
url http://www.asianspinejournal.org/upload/pdf/asj-11-694.pdf
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AT prabakaranmaduraimuthu coccygealmorphologyonmultislicecomputedtomographyinatertiaryhospitalinindia