{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,15]],"date-time":"2026-03-15T18:22:47Z","timestamp":1773598967104,"version":"3.50.1"},"reference-count":23,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2019,9,28]],"date-time":"2019-09-28T00:00:00Z","timestamp":1569628800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2019,9,28]],"date-time":"2019-09-28T00:00:00Z","timestamp":1569628800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2019,9,28]],"date-time":"2019-09-28T00:00:00Z","timestamp":1569628800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/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":[[2021,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>Collagen meniscal implants (CMI) have variable imaging findings on MRI and it remains ambiguous, if alterations may be present in asymptomatic patients. The aim was, to evaluate MR morphological characteristics and volume of CMI in the early, mid\u2010 and long\u2010term follow\u2010up.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Fifty\u2010seven patients (mean age, 43.6\u00b111 years; 41\u00a0male\/16 female) with good clinical outcome (subjective visual analogue scale for satisfaction\u2009&lt;\u20092 and a Lysholm\u2010score \u2265\u200984) after CMI were assessed retrospectively using MRI 1, 2 and 3\u20138 years postoperatively. CMI morphology, signal intensity (SI), homogeneity and size were assessed and a meniscal score was calculated. Chondral defects and bone marrow edema pattern were reported and summarized in a chondral score. Meniscal extrusion and volume were evaluated. Intra\u2010 and inter\u2010reader reliabilities were calculated. Spearman and partial correlations were used (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>One year postoperatively, the CMI varied in size [10% (4\/40) normal, 30% (12\/40) small, 60% (24\/40) hypertrophic] and was hyperintense and inhomogeneous in all patients. At long\u2010term follow\u2010up, the size of CMI decreased [6% (1\/17) resorbed, 18% (3\/17) normal, 41% (7\/17) small, 35% (6\/17) hypertrophic]. The SI of the CMI changed to normal in only 13% (2\/16). The majority was still hyperintense [87% (14\/16)]. Less meniscal extrusion was present in the follow\u2010up [71% (11\/16) versus initially 93% (37\/40)]. The meniscal score improved significantly (<jats:italic>\u03c1<\/jats:italic>\u2009=\u20090.28). Over time, full\u2010thickness femoral chondral defects were increasingly present [65% (10\/17) versus initially 33% (13\/40)] and the chondral score worsened significantly (<jats:italic>p<\/jats:italic>\u2009=\u20090.017).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Abnormal and inhomogeneous SI and irregular margins of the early postoperative CMI on MRI are findings seen in patients with good clinical results and should not necessarily be overcalled when reporting MRI. These features tend to decrease over time.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>IV.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-019-05715-9","type":"journal-article","created":{"date-parts":[[2019,9,28]],"date-time":"2019-09-28T01:10:02Z","timestamp":1569633002000},"page":"90-99","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["MR variability of collagen meniscal implant remodelling in patients with good clinical outcome"],"prefix":"10.1002","volume":"29","author":[{"given":"Balazs K.","family":"Kovacs","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Clinic of Radiology and Nuclear Medicine, University Hospital Basel University of Basel Petersgraben 4 4031 Basel Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rolf","family":"Huegli","sequence":"additional","affiliation":[{"name":"<!--<label>5<\/label>--> Department of Radiology Kantonsspital Baselland Bruderholz 4104 Bruderholz Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dorothee","family":"Harder","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Clinic of Radiology and Nuclear Medicine, University Hospital Basel University of Basel Petersgraben 4 4031 Basel Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luca","family":"Cedro","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Clinic of Radiology and Nuclear Medicine, University Hospital Basel University of Basel Petersgraben 4 4031 Basel Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roger","family":"Berbig","sequence":"additional","affiliation":[{"name":"<!--<label>2<\/label>--> SportClinic Zurich Hirslanden Witellikerstrasse 40 8032 Zurich Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Felix","family":"Amsler","sequence":"additional","affiliation":[{"name":"<!--<label>4<\/label>--> Amsler Consulting Gundeldingerrain 111 4059 Basel Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Susanne","family":"Bensler","sequence":"additional","affiliation":[{"name":"<!--<label>6<\/label>--> Department of Radiology Kantonsspital Baden AG Im Ergel 1 5404 Baden Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael T.","family":"Hirschmann","sequence":"additional","affiliation":[{"name":"<!--<label>3<\/label>--> Department of Orthopedic Surgery and Traumatology Kantonsspital Baselland (Bruderholz, Liestal, Laufen) 4101 Bruderholz Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1560-0247","authenticated-orcid":false,"given":"Anna","family":"Hirschmann","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Clinic of Radiology and Nuclear Medicine, University Hospital Basel University of Basel Petersgraben 4 4031 Basel Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2019,9,28]]},"reference":[{"key":"e_1_2_9_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jbiomech.2007.01.016"},{"key":"e_1_2_9_3_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546510364054"},{"key":"e_1_2_9_4_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010014\u20103136\u20109"},{"key":"e_1_2_9_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.knee.2009.08.011"},{"key":"e_1_2_9_6_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11547\u2010007\u20100204\u2010y"},{"key":"e_1_2_9_7_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00264\u2010014\u20102408\u20109"},{"key":"e_1_2_9_8_2","doi-asserted-by":"publisher","DOI":"10.1002\/jor.22456"},{"key":"e_1_2_9_9_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010012\u20102259\u20100"},{"key":"e_1_2_9_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.knee.2016.10.011"},{"key":"e_1_2_9_11_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010018\u20104838\u20101"},{"key":"e_1_2_9_12_2","doi-asserted-by":"publisher","DOI":"10.2307\/2529310"},{"key":"e_1_2_9_13_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00068\u2010007\u20102188\u20107"},{"key":"e_1_2_9_14_2","doi-asserted-by":"publisher","DOI":"10.1177\/036354658201000306"},{"key":"e_1_2_9_15_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2011.02.018"},{"key":"e_1_2_9_16_2","doi-asserted-by":"publisher","DOI":"10.1177\/036354658901700410"},{"key":"e_1_2_9_17_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010005\u20100688\u20108"},{"key":"e_1_2_9_18_2","first-page":"568","volume-title":"Fundamentals of biostatistics","author":"Rosner B","year":"2011"},{"key":"e_1_2_9_19_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2005.01.006"},{"key":"e_1_2_9_20_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010019\u201005504\u20104"},{"key":"e_1_2_9_21_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546510391179"},{"key":"e_1_2_9_22_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2015.01.025"},{"key":"e_1_2_9_23_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010006\u20100144\u20104"},{"key":"e_1_2_9_24_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546512456835"}],"container-title":["Knee Surgery, Sports Traumatology, Arthroscopy"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/s00167-019-05715-9.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/article\/10.1007\/s00167-019-05715-9\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/s00167-019-05715-9.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"},{"URL":"https:\/\/esskajournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1007\/s00167-019-05715-9","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,19]],"date-time":"2025-10-19T14:27:43Z","timestamp":1760884063000},"score":1,"resource":{"primary":{"URL":"https:\/\/esskajournals.onlinelibrary.wiley.com\/doi\/10.1007\/s00167-019-05715-9"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,9,28]]},"references-count":23,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2021,1]]}},"alternative-id":["10.1007\/s00167-019-05715-9"],"URL":"https:\/\/doi.org\/10.1007\/s00167-019-05715-9","archive":["Portico"],"relation":{},"ISSN":["0942-2056","1433-7347"],"issn-type":[{"value":"0942-2056","type":"print"},{"value":"1433-7347","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,9,28]]},"assertion":[{"value":"14 April 2019","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"11 September 2019","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"28 September 2019","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Compliance with ethical standards"}},{"value":"No conflict of interest for any of the authors.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"This study was approved by the local ethical committee (Ethikkommission Nordwest- und Zentralschweiz, EKNZ Nr. 2014\/146).","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}}]}}