Abstract
Ankylosing spondylitis (AS) may result in a loss of spinal mobility. Therefore, evaluation of spinal mobility is an essential part of follow-up of patients with AS. The tragus-to-wall distance (TWD) is one of the four spinal mobility assessment parameters of the Bath Ankylosing Spondylitis Metrology Index, an index used in the follow-up of patients with AS. The aim of this study was to investigate the effect of body shape on TWD. In total, 465 subjects aged 18 to 65 years with no disorders affecting the spine or any joint or disturbing the normal anatomical posture were included in this study. Their weight, height, hip and chest circumferences, anterior superior iliac crest-to-wall distance (ASIS-WD), and TWD were measured. Correlations between the parameters were calculated. TWD was positively correlated with weight (p < 0.001, r = 0.389), height (p < 0.001, r = 0.174), hip circumference (p < 0.001, r = 0.296), chest circumference (p < 0.001, r = 0.291), and ASIS-WD (p < 0.001, r = 0.292). Weight gain or loss may lead to incorrect interpretations during the patient’s follow-up. Comparative studies with unevenly distributed groups in terms of weight and height may also misdirect the TWD results.
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References
Zochling J, Smith EU (2010) Seronegative spondyloarthritis. Best Pract Res Clin Rheumatol 24(6):747–756
Baraliakos X, Braun J (2011) Spondyloarthritides. Best Pract Res Clin Rheumatol 25(6):825–842
Chandran V, O’Shea FD, Schentag CT, Inman RD, Gladman DD (2007) Relationship between spinal mobility and radiographic damage in ankylosing spondylitis and psoriatic spondylitis: a comparative analysis. J Rheumatol 34(12):2463–2465
Vosse D, van der Heijde D, Landewé R, Geusens P, Mielants H, Dougados M et al (2006) Determinants of hyperkyphosis in patients with ankylosing spondylitis. Ann Rheum Dis 65(6):770–774
Kaya T, Gelal F, Gunaydin R (2006) The relationship between severity and extent of spinal involvement and spinal mobility and physical functioning in patients with ankylosing spondylitis. Clin Rheumatol 25(6):835–839
Sieper J, Rudwaleit M, Baraliakos X, Brandt J, Braun J, Burgos-Vargas R et al (2009) The Assessment of SpondyloArthritis International Society (ASAS) handbook: a guide to assess spondyloarthritis. Ann Rheum Dis 68(Suppl II):ii1–ii44
Jenkinson TR, Mallorie PA, Whitelock HC, Kennedy LG, Garrett SL, Calin A (1994) Defining spinal mobility in ankylosing spondylitis (AS). The Bath AS Metrology Index. J Rheumatol 21(9):1694–1698
Martindale JH, Sutton CJ, Goodacre L (2012) An exploration of the inter- and intra-rater reliability of the Bath Ankylosing Spondylitis Metrology Index. Clin Rheumatol 31(11):1627–1631
Jamaluddin S, Sulaiman AR, Imran MK, Juhara H, Ezane MA, Nordin S (2011) Reliability and accuracy of the tape measurement method with a nearest reading of 5 mm in the assessment of leg length discrepancy. Singap Med J 52(9):681–684
Shipe NK, Billek-Sawhney B, Canter TA, Meals DJ, Nestler JM, Stumpff JL (2013) The intra- and inter-rater reliability of the tragus wall distance (TWD) measurement in non-pathological participants ages 18-34. Physiother Theory Pract 29(4):328–334
Aswathappa J, Garg S, Kutty K, Shankar V (2013) Neck circumference as an anthropometric measure of obesity in diabetics. N Am J Med Sci 5(1):28–31
Sabuncu T, Arikan E, Tasan E, Hatemi H (1999) Comparison of the associations of body mass index, percentage body fat, waist circumference and waist/hip ratio with hypertension and other cardiovascular risk factors. Turk Jem 3:137–142
Chittawatanarat K, Pruenglampoo S, Trakulhoon V, Ungpinitpong W, Patumanond J (2012) Development of gender- and age group-specific equations for estimating body weight from anthropometric measurement in Thai adults. Int J Gen Med 5:65–80
Gladman DD, Inman RD, Cook RJ, van der Heijde D, Landewé RB, Braun J et al (2007) International spondyloarthritis interobserver reliability exercise—the INSPIRE study: I. Assessment of spinal measures. J Rheumatol 34(8):1733–1739
Maksymowych WP, Mallon C, Richardson R et al (2006) Does height influence the assessment of spinal and hip mobility measures used in ankylosing spondylitis? J Rheumatol 33(10):2035–2040
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We thank Assistant Prof. Omer Uysal for his contributions to the statistical analysis of the study.
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Ozaras, N., Gulec, M.G., Celik, H.K.A. et al. Effect of body shape on tragus-to-wall distance in the normal population. Clin Rheumatol 33, 1169–1171 (2014). https://doi.org/10.1007/s10067-014-2584-4
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DOI: https://doi.org/10.1007/s10067-014-2584-4