{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,11]],"date-time":"2026-07-11T05:56:51Z","timestamp":1783749411330,"version":"3.55.0"},"reference-count":21,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2012,10,30]],"date-time":"2012-10-30T00:00:00Z","timestamp":1351555200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2013,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The purpose of the study was to evaluate the clinical and radiological outcomes after medial\/lateral collagen meniscus substitution (CMI) at 12\u00a0months postoperatively.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Sixty\u2010seven patients (m:f = 47:20, mean age 36 \u00b1 10 years) underwent arthroscopic CMI after previous subtotal medial (n = 55) or lateral meniscectomy (n = 12) due to persistent joint line pain (n = 25) or to prophylactic reasons (n = 42). Clinical follow\u2010up consisted of IKDC score, Tegner score, Lysholm score, and visual analog scale for pain and satisfaction (preinjury, preoperatively, and 12\u00a0months postoperatively; follow\u2010up rate 90 %). MRI scans were analyzed according to the Genovese criteria.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Nineteen patients (29 %) showed a normal (A), 35\u00a0nearly normal (B), 5 abnormal (C), and 1 patient severely abnormal total IKDC score (D). The median Tegner preinjury score was 7 (range 2\u201310) and at follow\u2010up 6 (range 2\u201310). The mean Lysholm score before surgery was 68 \u00b1 20 and 93 \u00b1 9 at follow\u2010up. Preoperatively, the mean VAS pain was 4.4 \u00b1 3.1 and 2.0 \u00b1 1.0 at follow\u2010up. Clinical failure of the CMI occurred in 3 patients (n = 1\u00a0infection, n = 1 failure of the implant, n = 1 chronic synovitis). On MRI, the CMI was completely resorbed in 3 patients (5 %), partially resorbed in 55 (92 %), and entirely preserved in 3 (5 %) patients. In 5 patients (8 %) the CMI was isointense, in 54 (90 %) slightly and 1 (2 %) highly hyperintense. 43 (72 %) patients showed an extrusion of the CMI implant of more than 3\u00a0mm.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Significant pain relief and functional improvement throughout all scores at 1 year was noted. The CMI undergoes significant remodeling, degradation, resorption, and extrusion in most of the patients. No difference in outcomes between the medial and lateral CMI was observed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>Prospective therapeutic study, Level IV.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-012-2259-0","type":"journal-article","created":{"date-parts":[[2012,10,29]],"date-time":"2012-10-29T17:21:03Z","timestamp":1351531263000},"page":"740-747","source":"Crossref","is-referenced-by-count":62,"title":["One\u2010year clinical and MR imaging outcome after partial meniscal replacement in stabilized knees using a collagen meniscus implant"],"prefix":"10.1002","volume":"21","author":[{"given":"M. T.","family":"Hirschmann","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery and Traumatology Kantonsspital Bruderholz 4101 Bruderholz Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L.","family":"Keller","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery and Traumatology Kantonsspital Bruderholz 4101 Bruderholz Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.","family":"Hirschmann","sequence":"additional","affiliation":[{"name":"<!--<label>2<\/label>--> Department of Radiology Balgrist Z\u00fcrich Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L.","family":"Schenk","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery and Traumatology Kantonsspital Bruderholz 4101 Bruderholz Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R.","family":"Berbig","sequence":"additional","affiliation":[{"name":"<!--<label>3<\/label>--> SportClinic Zurich Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"U.","family":"L\u00fcthi","sequence":"additional","affiliation":[{"name":"<!--<label>3<\/label>--> SportClinic Zurich Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"F.","family":"Amsler","sequence":"additional","affiliation":[{"name":"<!--<label>4<\/label>--> Amsler Consulting Basel Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"N. F.","family":"Friederich","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery and Traumatology Kantonsspital Bruderholz 4101 Bruderholz Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M. 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