{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,7]],"date-time":"2026-08-07T16:34:19Z","timestamp":1786120459303,"version":"build-2736575974"},"reference-count":0,"publisher":"Universa BV","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Acta Orthop Belg"],"abstract":"<jats:p>Cobb angle measurement is essential for diagnosing and monitoring scoliosis; however, its accuracy varies with observer experience. In many healthcare systems, including Oman, initial measurements are commonly performed by residents and influence referral urgency, follow-up intervals, and bracing decisions, where even small inaccuracies may alter clinical pathways. This study evaluated the inter- and intra-observer reliability of Cobb angle measurement among orthopaedic residents and spine specialists. A prospective comparative reliability study was conducted including 18 OMSB orthopaedic residents (PGY2\u20135) and five spine specialists. Each participant measured Cobb angles on five standardised standing scoliosis radiographs on two occasions, four weeks apart. Inter- and intra-observer reliability were assessed using the intraclass correlation coefficient (ICC) with a two-way random-effects, single-measurement, absolute-agreement model [ICC(2,1)], and Bland\u2013Altman plots were used to assess intra-observer reproducibility. Mean Cobb angles ranged from 45\u00b0 to 56\u00b0. Inter-observer reliability was poor among residents (ICC = \u20130.219; 95% CI \u20131.41 to 0.485) and remained low among specialists (ICC = 0.120; 95% CI \u20132.28 to 0.898). Intra-observer variation averaged approximately 5\u00b0, with a Bland\u2013Altman mean bias close to zero and limits of agreement of \u00b15%. Negative ICC values indicated that between-observer variability exceeded within- observer consistency. Residents demonstrated markedly poorer inter-observer reliability compared to specialists, highlighting the impact of clinical experience on accurate end-vertebra selection and angle measurement. Targeted training modules and structured exposure during residency may improve measurement consistency, referral accuracy, and overall scoliosis management pathways.<\/jats:p>","DOI":"10.52628\/92.2.15167","type":"journal-article","created":{"date-parts":[[2026,8,6]],"date-time":"2026-08-06T21:12:14Z","timestamp":1786050734000},"source":"Crossref","is-referenced-by-count":0,"title":["Inter- and intra-observer reliability of cobb angle measurement between orthopaedic residents and spine specialists"],"prefix":"10.52628","volume":"92","author":[{"given":"A. I.","family":"AL ALAWI","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery, Khoula Hospital, Directorate General of Khoula Hospital, Ministry of Health, Muscat, Oman"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S.","family":"AL KALBANI","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Khoula Hospital, Directorate General of Khoula Hospital, Ministry of Health, Muscat, Oman"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A. M.","family":"AL BARWANI","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Khoula Hospital, Directorate General of Khoula Hospital, Ministry of Health, Muscat, Oman"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R. S.","family":"AL WESHAHI","sequence":"additional","affiliation":[{"name":"Oman Medical Specialty Board (OMSB), Muscat, Oman"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"27062","published-online":{"date-parts":[[2026,8]]},"container-title":["Acta Orthopaedica Belgica"],"original-title":[],"deposited":{"date-parts":[[2026,8,6]],"date-time":"2026-08-06T21:12:16Z","timestamp":1786050736000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.actaorthopaedica.be\/archive\/volume-92\/summer\/original-clinical-research-imaging-diagnostics\/inter-and-intra-observer-reliability-of-cobb-angle-measurement-between-orthopaedic-residen\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,8]]},"references-count":0,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2026,8]]}},"URL":"https:\/\/doi.org\/10.52628\/92.2.15167","relation":{},"ISSN":["0001-6462"],"issn-type":[{"value":"0001-6462","type":"print"}],"subject":[],"published":{"date-parts":[[2026,8]]}}}