Abstract
Background
In the past, few studies have been done to objectively measure the sacrococcygeal (SC) and intercoccygeal (IC) angles in the population and in patients with coccydynia. Coccydynia is an age-old disorder, the exact incidence of which has not been determined. It is reported to be more common in females and the obese. The magnetic resonance imaging (MRI) studies done in the past have calculated the curvature indices. In this study, we used MRI to objectively measure the angles in the normal participants as well as those with idiopathic coccydynia
Materials and Methods
Two groups of patients were identified. Group A was “control group” of 106 normal participants and Group B comprised “study group” of ten patients suffering from idiopathic coccydynia. In all these patients, midsagittal T1-weighted MRI image acquired in supine position was used to calculate SC and IC angles. Data were analyzed, and angles were compared between the study and control groups. Statistical analysis was done with Chi-square test
Results
In the control group, the average SC and IC angles in the control group were 126.8° and 33.5°, respectively. In the study group, the average SC angle and the average IC angle turned out to be 127.1° and 43.2°, respectively. The difference between the SC angles in the control and study groups was not significant (P = 0.7), whereas the difference between the IC angles in the two groups was significant (P = 0.002)
Conclusions
From our study, we observed that the IC angle shows a decreasing trend with increasing age. In addition, increased IC angle was identified as a possible cause of idiopathic coccydynia
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References
Simpson J. Clinical lectures on the diseases of women. Lecture XVII. Coccygodynia and diseases and deformities of the coccyx. Med Times Gaz 1859;40:1–7.
Grosso NP, van Dam BE. Total coccygectomy for the relief of coccygodynia: A retrospective review. J Spinal Disord 1995;8:328–30.
Howorth B. The painful coccyx. Clin Orthop 1959;14:145–60.
Kim NH, Suk KS. Clinical and radiological differences between traumatic and idiopathic coccydynia. Yonsei Med J 1999;40:215–20.
Nathan ST, Fisher BE, Roberts CS. Coccydynia: A review of pathoanatomy, aetiology, treatment and outcome. J Bone Joint Surg Br 2010;92:1622–7.
Schapiro S. Low back and rectal pain from an orthopedic and proctologic viewpoint; with a review of 180 cases. Am J Surg 1950;79:117–28.
Fogel GR, Cunningham PY 3rd, Esses SI. Coccygodynia: Evaluation and management. J Am Acad Orthop Surg 2004;12:49–54.
Maigne JY, Doursounian L, Chatellier G. Causes and mechanisms of common coccydynia: Role of body mass index and coccygeal trauma. Spine (Phila Pa 1976) 2000;25:3072–9.
Duncan G. Painful coccyx. Arch Surg 1937;37:1088–104.
Maigne JY, Guedj S, Straus C. Idiopathic coccygodynia. Lateral roentgenograms in the sitting position and coccygeal discography. Spine 1994;19:930–4.
Hodge J. Clinical management of coccydynia. Med Trial Tech Q 1979;25:277–84.
Wray CC, Easom S, Hoskinson J. Coccydynia. Aetiology and treatment. J Bone Joint Surg Br 1991;73:335–8.
Woon JT, Maigne JY, Perumal V, Stringer MD. Magnetic resonance imaging morphology and morphometry of the coccyx in coccydynia. Spine (Phila Pa 1976) 2013;38:E1437–45.
Marwan YA, Al-Saeed OM, Esmaeel AA, Ahmad Kombar OR, Bendary AM, Abdul Azeem ME. Computerized tomography-based morphologic and morphometric features of the coccyx among Arab adults. Spine (Phila Pa 1976) 2014;39:1210–9.
Woon JT, Perumal V, Maigne JY, Stringer MD. CT morphology and morphometry of the normal adult coccyx. Eur Spine J 2013;22:863–70.
Kerimoglu U, Dagoglu MG, Ergen FB. Intercoccygeal angle and type of coccyx in asymptomatic patients. Surg Radiol Anat 2007;29:683–7.
Przybylski P, Pankowicz M, Bockowska A, Czekajska-Chehab E, Staskiewicz G, Korzec M, et al. Evaluation of coccygeal bone variability, intercoccygeal and lumbosacral angles in asymptomatic patients in multislice computed tomography. Anat Sci Int 2013;88:204–11.
Postacchini F, Massobrio M. Idiopathic coccygodynia. Analysis of fifty-one operative cases and a radiographic study of the normal coccyx. J Bone Joint Surg Am 1983;65:1116–24.
Maigne JY, Pigeau I, Roger B. Magnetic resonance imaging findings in the painful adult coccyx. Eur Spine J 2012;21:2097–104.
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Gupta, V., Agarwal, N. & Baruah, B.P. Magnetic Resonance Measurements of Sacrococcygeal and Intercoccygeal Angles in Normal Participants and those with Idiopathic Coccydynia. IJOO 52, 353–357 (2018). https://doi.org/10.4103/ortho.IJOrtho_407_16
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DOI: https://doi.org/10.4103/ortho.IJOrtho_407_16