{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T22:49:49Z","timestamp":1790635789586,"version":"4.1.0"},"reference-count":27,"publisher":"Cambridge University Press (CUP)","issue":"2","license":[{"start":{"date-parts":[[2021,2,17]],"date-time":"2021-02-17T00:00:00Z","timestamp":1613520000000},"content-version":"unspecified","delay-in-days":16,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Laryngol. Otol."],"published-print":{"date-parts":[[2021,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec id=\"S0022215121000475_sec_a1\"><jats:title>Objective<\/jats:title><jats:p>The aim of this study was to establish arytenoid asymmetry as a pre-operative predictive parameter for arytenoid adduction surgery in unilateral vocal fold paralysis and thereafter identify the most predictive parameter for arytenoid adduction among the established parameters.<\/jats:p><\/jats:sec><jats:sec id=\"S0022215121000475_sec_a2\" sec-type=\"methods\"><jats:title>Methods<\/jats:title><jats:p>A retrospective comparative study was undertaken. The \u2018arytenoid asymmetry angle\u2019 formed between skewed \u2018glottic\u2019 and \u2018interarytenoid\u2019 axes (traced along the plane of closure of the membranous and cartilaginous glottis, respectively) was quantified in pre-operative laryngoscopic images of 85 adults with unilateral vocal fold paralysis who underwent either type 1 thyroplasty (group 1) or type 1 thyroplasty with arytenoid adduction (group 2). The need for arytenoid adduction was determined intra-operatively based on subjective voice improvement and laryngoscopic results.<\/jats:p><\/jats:sec><jats:sec id=\"S0022215121000475_sec_a3\" sec-type=\"results\"><jats:title>Results<\/jats:title><jats:p>Arytenoid asymmetry (<jats:italic>p &lt;<\/jats:italic> 0.0001), posterior phonatory gap (<jats:italic>p =<\/jats:italic> 0.001) and vertical level difference (<jats:italic>p =<\/jats:italic> 0.004) were significantly greater in group 2 (descending order of parameters). Arytenoid asymmetry angle showed a significant positive correlation with the latter two parameters.<\/jats:p><\/jats:sec><jats:sec id=\"S0022215121000475_sec_a4\" sec-type=\"conclusions\"><jats:title>Conclusion<\/jats:title><jats:p>Arytenoid asymmetry is the most predictive parameter for arytenoid adduction. An arytenoid asymmetry angle of more than or equal to 33.9\u2070 is an indication for arytenoid adduction. This aids in pre-operative planning of arytenoid adduction.<\/jats:p><\/jats:sec>","DOI":"10.1017\/s0022215121000475","type":"journal-article","created":{"date-parts":[[2021,2,17]],"date-time":"2021-02-17T04:20:07Z","timestamp":1613535607000},"page":"159-167","source":"Crossref","is-referenced-by-count":9,"title":["Arytenoid asymmetry: Is it the most predictive parameter for arytenoid adduction in unilateral vocal fold paralysis?"],"prefix":"10.1017","volume":"135","author":[{"given":"J R","family":"Menon","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A S","family":"Mathew","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S","family":"Nath","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2021,2,17]]},"reference":[{"key":"S0022215121000475_ref15","doi-asserted-by":"publisher","DOI":"10.1007\/3-540-32504-2_4"},{"key":"S0022215121000475_ref14","doi-asserted-by":"publisher","DOI":"10.1097\/00005537-199811000-00020"},{"key":"S0022215121000475_ref1","first-page":"179","volume-title":"Professional voice: The Science and Art of Clinical Care III","author":"Letson","year":"2005"},{"key":"S0022215121000475_ref10","doi-asserted-by":"publisher","DOI":"10.1016\/S0030-6665(05)70246-2"},{"key":"S0022215121000475_ref11","doi-asserted-by":"publisher","DOI":"10.1002\/lary.27900"},{"key":"S0022215121000475_ref24","first-page":"1611","article-title":"Arytenoid adduction as a surgical treatment for hoarseness with unilateral vocal cord fixation","volume":"25","author":"Niimi","year":"1991","journal-title":"Ann Bull RIPL"},{"key":"S0022215121000475_ref19","doi-asserted-by":"publisher","DOI":"10.1288\/00005537-199408000-00010"},{"key":"S0022215121000475_ref23","doi-asserted-by":"publisher","DOI":"10.1016\/j.amjoto.2019.102323"},{"key":"S0022215121000475_ref13","doi-asserted-by":"publisher","DOI":"10.1097\/00005537-199912000-00006"},{"key":"S0022215121000475_ref27","doi-asserted-by":"publisher","DOI":"10.1288\/00005537-199311000-00005"},{"key":"S0022215121000475_ref5","doi-asserted-by":"publisher","DOI":"10.1016\/S0892-1997(05)80212-7"},{"key":"S0022215121000475_ref16","doi-asserted-by":"publisher","DOI":"10.1007\/978-4-431-68358-2"},{"key":"S0022215121000475_ref21","doi-asserted-by":"publisher","DOI":"10.1080\/14015430410017009"},{"key":"S0022215121000475_ref9","doi-asserted-by":"publisher","DOI":"10.1007\/s40136-014-0044-y"},{"key":"S0022215121000475_ref4","doi-asserted-by":"publisher","DOI":"10.1007\/3-540-32504-2_4"},{"key":"S0022215121000475_ref2","first-page":"95","volume-title":"A Practical Guide to Laryngeal Framework Surgery","author":"Nerurkar","year":"2017"},{"key":"S0022215121000475_ref22","first-page":"176","volume-title":"Vocal Fold Paralysis","author":"Woodson","year":"2006"},{"key":"S0022215121000475_ref18","doi-asserted-by":"publisher","DOI":"10.21037\/ajo.2018.05.04"},{"key":"S0022215121000475_ref8","doi-asserted-by":"publisher","DOI":"10.1001\/archotol.1978.00790100009002"},{"key":"S0022215121000475_ref17","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvoice.2012.03.005"},{"key":"S0022215121000475_ref26","doi-asserted-by":"publisher","DOI":"10.4103\/1947-2714.123254"},{"key":"S0022215121000475_ref6","first-page":"127","volume-title":"Neurological Disorders of the Larynx","author":"Blitzer","year":"2011"},{"key":"S0022215121000475_ref7","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-030-23475-1_8"},{"key":"S0022215121000475_ref25","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvoice.2017.02.003"},{"key":"S0022215121000475_ref3","first-page":"269","volume-title":"The Larynx","author":"Netterville","year":"2003"},{"key":"S0022215121000475_ref12","doi-asserted-by":"publisher","DOI":"10.1097\/00005537-200008000-00015"},{"key":"S0022215121000475_ref20","doi-asserted-by":"crossref","first-page":"262","DOI":"10.1007\/BF02991287","article-title":"Medialization laryngoplasty with silastic implant for unilateral vocal cord paralysis","volume":"49","author":"Phaniendrakumar","year":"1997","journal-title":"Indian J Otolaryngol Head Neck Surg"}],"container-title":["The Journal of Laryngology &amp; 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