{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,15]],"date-time":"2026-03-15T19:37:13Z","timestamp":1773603433927,"version":"3.50.1"},"reference-count":30,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2022,1,4]],"date-time":"2022-01-04T00:00:00Z","timestamp":1641254400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2022,1,4]],"date-time":"2022-01-04T00:00:00Z","timestamp":1641254400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2022,1,4]],"date-time":"2022-01-04T00:00:00Z","timestamp":1641254400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2022,6]]},"abstract":"Abstract<\/jats:title>Purpose<\/jats:title>Meniscus preservation is key in knee surgery. The newly documented crevice sign indicates instability of the medial meniscus in ACL\u2010deficient knees. Once the sign is visualised, it is imperative that the stability of the medial meniscus is assessed and potentially treated. It was hypothesized that there would be a strong correlation between the presence of an unstable medial meniscal tear in patients with the crevice sign in ACL\u2010deficient knees.<\/jats:p><\/jats:sec>Methods<\/jats:title>This was a multicenter prospective study carried out to evaluate the incidence of medial meniscal tears in patients with ACL\u2010deficient knees and their correlation with a crevice sign. All patients (128) who had undergone ACL reconstruction between May 2020 and November 2020 were assessed arthroscopically for meniscal stability and divided in to two groups: stable (n<\/jats:italic>\u2009=\u200984) and unstable (n<\/jats:italic>\u2009=\u200944). Thereafter, the presence of the crevice sign was determined in each case.<\/jats:p><\/jats:sec>Results<\/jats:title>The populations were comparable in terms of sex and age (Table ). Fisher\u2019s exact test showed a significant association between the presence of the crevice sign and the instability of the medial meniscus (p<\/jats:italic>\u2009<\u20090.001). Descriptive statistics suggest that the presence of crevice sign was associated more frequently to MM instability (38.6% vs 1.2%; p<\/jats:italic>\u2009<\u20090.001). The specificity of this test was 98.8% and its sensitivity was 38.6%. The positive predictive value (PPV) was 94.4% and the negative predictive value (NPV) was 75.5%.<\/jats:p>Descriptions and comparisons of internal meniscus instability of patients by presence of crevice sign<\/jats:title><\/jats:caption>\n\n\n\n\n\n\n\n\n\n\n\n\nInternal meniscus instability (N<\/jats:italic>\u2009=\u200944)<\/jats:styled-content><\/jats:th>\nInternal meniscus stability (N<\/jats:italic>\u2009=\u200984)<\/jats:styled-content><\/jats:th>\nTotal (N<\/jats:italic>\u2009=\u2009128)<\/jats:styled-content><\/jats:th>\n<\/jats:tr>\n<\/jats:thead>\n\n\nGender<\/jats:styled-content><\/jats:td>\n<\/jats:tr>\n\nN<\/jats:italic><\/jats:styled-content><\/jats:td>\n44<\/jats:styled-content><\/jats:td>\n\n84<\/jats:styled-content><\/jats:td>\n\n128<\/jats:styled-content><\/jats:td>\n\n<\/jats:tr>\n\nMale<\/jats:styled-content><\/jats:td>\n33<\/jats:styled-content><\/jats:td>\n(75.0)<\/jats:styled-content><\/jats:td>\n58<\/jats:styled-content><\/jats:td>\n(69.0)<\/jats:styled-content><\/jats:td>\n91<\/jats:styled-content><\/jats:td>\n(71.1)<\/jats:styled-content><\/jats:td>\n<\/jats:tr>\n\nFemale<\/jats:styled-content><\/jats:td>\n11<\/jats:styled-content><\/jats:td>\n(25.0)<\/jats:styled-content><\/jats:td>\n26<\/jats:styled-content><\/jats:td>\n(31.0)<\/jats:styled-content><\/jats:td>\n37<\/jats:styled-content><\/jats:td>\n(28.9)<\/jats:styled-content><\/jats:td>\n<\/jats:tr>\n\nFisher\u2019s exact test<\/jats:styled-content><\/jats:td>\n\n\n\n\n\n(n.s.)<\/jats:styled-content><\/jats:td>\n<\/jats:tr>\n\nAge (years)<\/jats:styled-content><\/jats:td>\n<\/jats:tr>\n\nN<\/jats:italic><\/jats:styled-content><\/jats:td>\n44<\/jats:styled-content><\/jats:td>\n\n84<\/jats:styled-content><\/jats:td>\n\n128<\/jats:styled-content><\/jats:td>\n\n<\/jats:tr>\n\nMean (ET)<\/jats:styled-content><\/jats:td>\n28.6<\/jats:styled-content><\/jats:td>\n(9.4)<\/jats:styled-content><\/jats:td>\n30.1<\/jats:styled-content><\/jats:td>\n(10.2)<\/jats:styled-content><\/jats:td>\n29.6<\/jats:styled-content><\/jats:td>\n(9.9)<\/jats:styled-content><\/jats:td>\n<\/jats:tr>\n\nMedian (IIQ)<\/jats:styled-content><\/jats:td>\n26.5<\/jats:styled-content><\/jats:td>\n(22.0;34.5)<\/jats:styled-content><\/jats:td>\n27.0<\/jats:styled-content><\/jats:td>\n(22.5;37.0)<\/jats:styled-content><\/jats:td>\n27.0<\/jats:styled-content><\/jats:td>\n(22.0;36.0)<\/jats:styled-content><\/jats:td>\n<\/jats:tr>\n\n[Min\u2013Max]<\/jats:styled-content><\/jats:td>\n[14\u201354]<\/jats:styled-content><\/jats:td>\n[14\u201352]<\/jats:styled-content><\/jats:td>\n\n[14\u201354]<\/jats:styled-content><\/jats:td>\n<\/jats:tr>\n\nWilcoxon test bilateral<\/jats:styled-content><\/jats:td>\n\n\n\n\n\n(n.s.)<\/jats:styled-content><\/jats:td>\n<\/jats:tr>\n\nCrevice sign<\/jats:styled-content><\/jats:td>\n<\/jats:tr>\n\nN<\/jats:italic><\/jats:styled-content><\/jats:td>\n44<\/jats:styled-content><\/jats:td>\n\n84<\/jats:styled-content><\/jats:td>\n\n128<\/jats:styled-content><\/jats:td>\n\n<\/jats:tr>\n\nAbsent<\/jats:styled-content><\/jats:td>\n27<\/jats:styled-content><\/jats:td>\n(61.4)<\/jats:styled-content><\/jats:td>\n83<\/jats:styled-content><\/jats:td>\n(98.8)<\/jats:styled-content><\/jats:td>\n110<\/jats:styled-content><\/jats:td>\n(85.9)<\/jats:styled-content><\/jats:td>\n<\/jats:tr>\n\nPresent<\/jats:styled-content><\/jats:td>\n17<\/jats:styled-content><\/jats:td>\n(38.6)<\/jats:styled-content><\/jats:td>\n1<\/jats:styled-content><\/jats:td>\n(1.2)<\/jats:styled-content><\/jats:td>\n18<\/jats:styled-content><\/jats:td>\n(14.1)<\/jats:styled-content><\/jats:td>\n<\/jats:tr>\n\nFisher\u2019s exact test<\/jats:styled-content><\/jats:td>\n\n\n\n\n\np<\/jats:italic>\u2009<\u20090.001<\/jats:styled-content><\/jats:td>\n<\/jats:tr>\n<\/jats:tbody>\n<\/jats:table>\n\n<\/jats:table-wrap><\/jats:p><\/jats:sec>Conclusion<\/jats:title>The hypothesis was confirmed since medial meniscal instability was strongly correlated with the existence of the crevice sign and showed high specificity and PPV.<\/jats:p><\/jats:sec>Level of evidence<\/jats:title>III.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-021-06823-1","type":"journal-article","created":{"date-parts":[[2022,1,3]],"date-time":"2022-01-03T19:03:16Z","timestamp":1641236596000},"page":"1888-1892","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["The crevice sign: a new indicator of meniscal instability in ACL 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XBI has no conflict of interest to declare. MC reports financial support from Arthrex and personal fees from Johnson & Johnson outside of the submitted work.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"This article does not contain any studies with human participants or animals performed by any of the authors.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}}]}}