{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T01:15:39Z","timestamp":1791854139895,"version":"4.3.4"},"reference-count":34,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2021,5,8]],"date-time":"2021-05-08T00:00:00Z","timestamp":1620432000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Sports Health: A Multidisciplinary Approach"],"published-print":{"date-parts":[[2022,3]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Extensor mechanism injuries involving the quadriceps tendon, patella, or patellar tendon can be a devastating setback for athletes. Despite the potential severity and relative frequency with which these injuries occur, large-scale epidemiological data on collegiate-level athletes are lacking.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Study Design:<\/jats:title>\n                    <jats:p>Descriptive epidemiology study.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence:<\/jats:title>\n                    <jats:p>Level 4.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>Knee extensor mechanism injuries across 16 sports among National Collegiate Athletic Association (NCAA) men and women during the 2004-2005 to 2013-2014 academic years were analyzed using the NCAA Injury Surveillance Program (NCAA-ISP). Extensor mechanism injuries per 100,000 athlete-exposures (AEs), operative rate, annual injury and reinjury rates, in-season status (pre-\/regular\/postseason), and time lost were compiled and calculated.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>A total of 11,778,265 AEs were identified and included in the study. Overall, 1,748 extensor mechanism injuries were identified, with an injury rate (IR) of 14.84 (per 100,000 AEs). N = 114 (6.5%) injuries were classified as severe injuries with a relatively higher median time loss (44 days) and operative risk (18.42%). Male athletes had higher risk of season-ending injuries in both all (3.20% vs 0.89%, P &lt; 0.01) and severe (41.54% vs 16.33%, P &lt; 0.01) extensor mechanism injuries. Similarly, contact injuries were more frequently season-ending injuries (4.44% vs 1.69%, P = 0.01). Women\u2019s soccer (IR = 2.59), women\u2019s field hockey (IR = 2.15), and women\u2019s cross country (IR = 2.14) were the sports with the highest rate of severe extensor mechanism injuries.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Extensor mechanism injuries in collegiate athletes represent a significant set of injuries both in terms of volume and potentially to their athletic careers. Male athletes and contact injuries appear to have a greater risk of severe injuries. Injuries defined as severe had a higher risk of operative intervention and greater amount of missed playing time.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Clinical Relevance:<\/jats:title>\n                    <jats:p>Knowledge of the epidemiology of extensor mechanism injuries may help clinicians guide their athlete patients in sports-related injury prevention and management.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/19417381211012969","type":"journal-article","created":{"date-parts":[[2021,5,9]],"date-time":"2021-05-09T04:07:20Z","timestamp":1620533240000},"page":"262-272","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":9,"title":["Epidemiology of Acute Extensor Mechanism Injuries in Collegiate-Level Athletes in the United States"],"prefix":"10.1177","volume":"14","author":[{"given":"Kevin K.","family":"Chen","sequence":"first","affiliation":[{"name":"Leni and Peter W. May Department of Orthopedic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jimmy J.","family":"Chan","sequence":"additional","affiliation":[{"name":"Leni and Peter W. May Department of Orthopedic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"William","family":"Ranson","sequence":"additional","affiliation":[{"name":"Leni and Peter W. May Department of Orthopedic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicholas","family":"Debellis","sequence":"additional","affiliation":[{"name":"Leni and Peter W. May Department of Orthopedic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hsin-Hui","family":"Huang","sequence":"additional","affiliation":[{"name":"Leni and Peter W. May Department of Orthopedic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ettore","family":"Vulcano","sequence":"additional","affiliation":[{"name":"Leni and Peter W. May Department of Orthopedic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York"},{"name":"Columbia University Division of Orthopedics at Mount Sinai Medical Center, Miami Beach, Florida"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexis","family":"Colvin","sequence":"additional","affiliation":[{"name":"Leni and Peter W. May Department of Orthopedic Surgery, Icahn School of Medicine at Mount Sinai, New York, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2021,5,8]]},"reference":[{"key":"bibr1-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1177\/0363546511417083"},{"key":"bibr2-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1177\/0363546513490655"},{"key":"bibr3-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2008.12.005"},{"key":"bibr4-19417381211012969","first-page":"97","volume":"43","author":"Carpenter JE","year":"1994","journal-title":"Instr Course Lect"},{"key":"bibr5-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1016\/j.injury.2008.06.021"},{"key":"bibr6-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1002\/jor.24120"},{"key":"bibr7-19417381211012969","doi-asserted-by":"publisher","DOI":"10.4085\/1062-6050-52.12.21"},{"key":"bibr8-19417381211012969","unstructured":"Deopujari S, Kiel J. Knee extensor mechanism injuries. In: StatPearls. 2020."},{"key":"bibr9-19417381211012969","doi-asserted-by":"publisher","DOI":"10.32098\/mltj.02.2015.06"},{"key":"bibr10-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1002\/0471445428"},{"key":"bibr11-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1123\/jab.27.3.215"},{"key":"bibr12-19417381211012969","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.O.00113"},{"key":"bibr13-19417381211012969","volume":"5","author":"Gwinner C","year":"2016","journal-title":"GMS Interdiscip Plast Reconstr Surg DGPW"},{"key":"bibr14-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1177\/1457496915598761"},{"key":"bibr15-19417381211012969","doi-asserted-by":"publisher","DOI":"10.4085\/1062-6050-49.3.58"},{"key":"bibr16-19417381211012969","doi-asserted-by":"publisher","DOI":"10.4085\/1062-6050-46.5.489"},{"key":"bibr17-19417381211012969","first-page":"820","volume":"11","author":"Loudon JK.","year":"2016","journal-title":"Int J Sports Phys Ther"},{"key":"bibr18-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1007\/s00402-017-2809-5"},{"key":"bibr19-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1097\/JSM.0b013e318190bddb"},{"key":"bibr20-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1177\/2325967118800479"},{"key":"bibr21-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1016\/j.rcl.2012.11.006"},{"key":"bibr22-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1016\/j.injury.2016.06.032"},{"key":"bibr23-19417381211012969","first-page":"161","volume":"70","author":"Ramsey RH","year":"1970","journal-title":"Clin Orthop Relat Res"},{"key":"bibr24-19417381211012969","doi-asserted-by":"publisher","DOI":"10.4085\/1062-6050-43.2.197"},{"key":"bibr25-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2017.07.039"},{"key":"bibr26-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1016\/j.otsr.2012.12.002"},{"key":"bibr27-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-010-1537-8"},{"key":"bibr28-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-017-5342-5"},{"key":"bibr29-19417381211012969","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-198163060-00010"},{"key":"bibr30-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1177\/1941738115593441"},{"issue":"53","key":"bibr31-19417381211012969","volume-title":"Econometric Society Monograph","author":"Trivedi PK","year":"2013","edition":"2"},{"key":"bibr32-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1177\/2325967119840712"},{"key":"bibr33-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1136\/bjsm.2010.076695"},{"key":"bibr34-19417381211012969","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.e3042"}],"container-title":["Sports Health: A Multidisciplinary Approach"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/19417381211012969","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/19417381211012969","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/19417381211012969","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T22:44:40Z","timestamp":1777589080000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/19417381211012969"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,5,8]]},"references-count":34,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2022,3]]}},"alternative-id":["10.1177\/19417381211012969"],"URL":"https:\/\/doi.org\/10.1177\/19417381211012969","relation":{},"ISSN":["1941-7381","1941-0921"],"issn-type":[{"value":"1941-7381","type":"print"},{"value":"1941-0921","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,5,8]]}}}