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ACL reconstruction was performed with patella or hamstring tendon graft. Conventional radiographs and a 3\u2010T magnetic resonance imaging study of both knees were obtained at a mean follow\u2010up of 10 years after ACL reconstruction and were compared with each other. The International Knee Documentation Committee score and Tegner activity index were used for clinical evaluation and the Knee Injury and Osteoarthritis Outcome Score for evaluating self\u2010reported knee function.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The 3\u2010T magnetic resonance imaging study showed positive signs of osteoarthritis in 33% of operated knees and 39% of nonoperated knees (\n                      <jats:italic>P<\/jats:italic>\n                      = .64). Conventional radiographs showed ongoing signs of radiographic osteoarthritis in 14% of uninjured knees according to Kellgren and Lawrence, in comparison with 21% of injured knees (\n                      <jats:italic>P<\/jats:italic>\n                      = .73). The functional outcomes between the injured knee and uninjured knee did not show any statistical differences. The mean postoperative International Knee Documentation Committee score was 89.2 \u00b1 9.3 points, and the total Knee Injury and Osteoarthritis Outcome Score was 92.7 \u00b1 7.8. The median preinjury Tegner score was 8 \u00b1 2, corresponding to 7 \u00b1 2 at follow\u2010up. In 68% of patients, the Tegner score was unchanged from preinjury to follow\u2010up.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Athletes with an isolated ACL rupture showed no increased risk of the development of post\u2010traumatic osteoarthritis in the long\u2010term after ACL replacement when compared with the uninjured contralateral knee. Our findings support the evidence to perform ACL replacement in athletes.<\/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.2011.09.014","type":"journal-article","created":{"date-parts":[[2012,1,27]],"date-time":"2012-01-27T23:44:20Z","timestamp":1327707860000},"page":"517-525","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":55,"title":["No Increased Occurrence of Osteoarthritis After Anterior Cruciate Ligament Reconstruction After Isolated Anterior Cruciate Ligament Injury in Athletes"],"prefix":"10.1002","volume":"28","author":[{"given":"Thomas","family":"Hoffelner","sequence":"first","affiliation":[{"name":"Department of Traumatology and Sports Injuries Paracelsus Medical University Salzburg Salzburg 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