{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T17:07:50Z","timestamp":1790701670733,"version":"4.1.0"},"reference-count":16,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2010,10,14]],"date-time":"2010-10-14T00:00:00Z","timestamp":1287014400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2010,10,14]],"date-time":"2010-10-14T00:00:00Z","timestamp":1287014400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"},{"start":{"date-parts":[[2010,10,14]],"date-time":"2010-10-14T00:00:00Z","timestamp":1287014400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2010,10,14]],"date-time":"2010-10-14T00:00:00Z","timestamp":1287014400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"funder":[{"DOI":"10.13039\/501100002714","name":"Albert-Ludwigs-Universit\u00e4t Freiburg","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100002714","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["arthroscopyjournal.org","clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Arthroscopy"],"published-print":{"date-parts":[[2011,1]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>The purpose of our study was to compare arthroscopic versus open measurement of cartilage defects and determination of defect grade according to the International Cartilage Repair Society (ICRS) classification.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Arthroscopic determination of defect size and grade according to the ICRS classification of 450 focal cartilage defects in 407 patients who underwent autologous chondrocyte implantation was compared with definite findings at the time of open knee surgery. Results were analyzed based on defect location, defect size, and experience of the treating surgeon.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Open evaluation of all cartilage defects showed a mean size of 4.54 \u00b1 2.11 cm\n                      <jats:sup>2<\/jats:sup>\n                      , whereas arthroscopic determination resulted in a significantly larger mean defect size of 5.69 \u00b1 1.81 cm\n                      <jats:sup>2<\/jats:sup>\n                      (\n                      <jats:italic>P<\/jats:italic>\n                      &lt; .001,\n                      <jats:italic>r<\/jats:italic>\n                      = 0.757). This observation was found in all subgroups concerning defect location and experience of the treating surgeon (\n                      <jats:italic>P<\/jats:italic>\n                      &lt; .001). Overestimation was pronounced among inexperienced surgeons (all\n                      <jats:italic>P<\/jats:italic>\n                      &lt; .01) and in smaller defects (\n                      <jats:italic>P<\/jats:italic>\n                      &lt; .01). Concerning grading of the defect according to the ICRS classification, there was a consensus in 80.9% of the cases when arthroscopic grading was compared with open grading. No differences were found based on defect location or experience of the treating surgeon (\n                      <jats:italic>P<\/jats:italic>\n                      &gt; .05).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Although a high correlation was found between arthroscopic and open evaluation of the cartilage defect size, there is a significant overestimation of the cartilage defect size during arthroscopy. This observation is independent of defect location. Smaller defects and inexperienced surgeons are factors that make an overestimation of defect size more likely. Arthroscopic detection and estimation of the full\u2010thickness cartilage defects according to the ICRS classification seem reliable.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>Level IV, therapeutic case series.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1016\/j.arthro.2010.05.024","type":"journal-article","created":{"date-parts":[[2010,10,14]],"date-time":"2010-10-14T05:59:38Z","timestamp":1287035978000},"page":"46-51","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":32,"title":["Comparison of Arthroscopic and Open Assessment of Size and Grade of Cartilage Defects of the Knee"],"prefix":"10.1002","volume":"27","author":[{"given":"Philipp","family":"Niemeyer","sequence":"first","affiliation":[{"name":"Department of Orthopedic Surgery and Traumatology Freiburg University Hospital Freiburg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jan M.","family":"Pestka","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery and Traumatology Freiburg University Hospital Freiburg Germany"},{"name":"Center for Biomechanics and Skeletal Biology University Medical Center Hamburg\u2010Eppendorf Hamburg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christoph","family":"Erggelet","sequence":"additional","affiliation":[{"name":"Center for Biologic Joint Surgery Z\u00fcrich Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matthias","family":"Steinwachs","sequence":"additional","affiliation":[{"name":"Department of Orthobiologics &amp; Cartilage Regeneration Schulthess\u2010Klinik Z\u00fcrich Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gian M.","family":"Salzmann","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery and Traumatology Freiburg University Hospital Freiburg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Norbert P.","family":"S\u00fcdkamp","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery and Traumatology Freiburg University Hospital Freiburg Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2010,10,14]]},"reference":[{"key":"e_1_2_2_2_1","doi-asserted-by":"publisher","DOI":"10.1055\/s-2004-832353"},{"key":"e_1_2_2_3_1","doi-asserted-by":"publisher","DOI":"10.1055\/s-2007-963030"},{"key":"e_1_2_2_4_1","first-page":"170","article-title":"Microfracture to treat full\u2010thickness chondral defects: Surgical technique, rehabilitation, and outcomes","volume":"15","author":"Steadman J.R.","year":"2002","journal-title":"J Knee Surg"},{"key":"e_1_2_2_5_1","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-200300003-00017"},{"key":"e_1_2_2_6_1","doi-asserted-by":"publisher","DOI":"10.1097\/00003086-200110001-00033"},{"key":"e_1_2_2_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2008.10.009"},{"key":"e_1_2_2_8_1","first-page":"1778","article-title":"Surgical management of articular cartilage defects in the knee","volume":"91","author":"Cole B.J.","year":"2009","journal-title":"J Bone Joint Surg Am"},{"key":"e_1_2_2_9_1","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-200300002-00008"},{"key":"e_1_2_2_10_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-009-1033-4"},{"key":"e_1_2_2_11_1","unstructured":"OpenEpi softwarehttp:\/\/www.openepi.com\/Menu\/OpenEpiMenu.htm Accessed January 15 2010"},{"key":"e_1_2_2_12_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00402-009-0868-y"},{"key":"e_1_2_2_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2006.11.015"},{"key":"e_1_2_2_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.knee.2007.02.001"},{"key":"e_1_2_2_15_1","doi-asserted-by":"publisher","DOI":"10.1136\/ard.2004.029678"},{"key":"e_1_2_2_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.joca.2007.05.005"},{"key":"e_1_2_2_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2005.09.007"}],"container-title":["Arthroscopy"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0749806310005451?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0749806310005451?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/arthroscopyjournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1016\/j.arthro.2010.05.024","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/arthroscopyjournals.onlinelibrary.wiley.com\/doi\/full-xml\/10.1016\/j.arthro.2010.05.024","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/arthroscopyjournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1016\/j.arthro.2010.05.024","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,15]],"date-time":"2026-03-15T09:23:10Z","timestamp":1773566590000},"score":1,"resource":{"primary":{"URL":"https:\/\/arthroscopyjournals.onlinelibrary.wiley.com\/doi\/10.1016\/j.arthro.2010.05.024"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2010,10,14]]},"references-count":16,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2011,1]]}},"alternative-id":["10.1016\/j.arthro.2010.05.024"],"URL":"https:\/\/doi.org\/10.1016\/j.arthro.2010.05.024","archive":["Portico"],"relation":{},"ISSN":["0749-8063","1526-3231"],"issn-type":[{"value":"0749-8063","type":"print"},{"value":"1526-3231","type":"electronic"}],"subject":[],"published":{"date-parts":[[2010,10,14]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Comparison of Arthroscopic and Open Assessment of Size and Grade of Cartilage Defects of the Knee","name":"articletitle","label":"Article Title"},{"value":"Arthroscopy: The Journal of Arthroscopic & Related Surgery","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.arthro.2010.05.024","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"Copyright \u00a9 2011 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}]}}