{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,21]],"date-time":"2026-09-21T19:41:45Z","timestamp":1790019705428,"version":"4.0.1"},"reference-count":26,"publisher":"BMJ","issue":"2","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Open"],"accepted":{"date-parts":[[2014,1,14]]},"published-print":{"date-parts":[[2014,2]]},"abstract":"<jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To examine the seasonal distribution of tendon ruptures in a large cohort of patients from Vancouver, Canada.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Design<\/jats:title>\n                    <jats:p>Retrospective chart review.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Setting<\/jats:title>\n                    <jats:p>Acute Achilles tendon rupture cases that occurred from 1987 to 2010 at an academic hospital in Vancouver, Canada. Information was extracted from an orthopaedic database.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Participants<\/jats:title>\n                    <jats:p>No direct contact was made with the participants. The following information was extracted from the OrthoTrauma database: age, sex, date of injury and season (winter, spring, summer and autumn), date of surgery if date of injury was unknown and type of injury (sport related or non-sport related\/unspecified). Only acute Achilles tendon rupture cases were included; chronic cases were excluded along with those that were conservatively managed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Primary and secondary outcomes<\/jats:title>\n                    <jats:p>The primary outcome was to determine the seasonal pattern of Achilles tendon rupture. Secondary outcomes, such as differences in gender and mechanism of sport (non-sport vs sport related), were also assessed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      There were 543 cases in total; 83% of the cases were men (average age 39.3) and 17% were women (average age 37.3). In total, 76% of cases were specified as sport related. The distribution of injuries varied significantly across seasons (\u03c7\n                      <jats:sup>2<\/jats:sup>\n                      , p&lt;0.05), with significantly more cases occurring in spring. The increase in the number of cases in spring was due to sport-related injuries, whereas non-sport-related cases were distributed evenly throughout the year.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The seasonality of sport-related Achilles tendon ruptures should be considered when developing preventive strategies and when timing their delivery.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/bmjopen-2013-004320","type":"journal-article","created":{"date-parts":[[2014,2,11]],"date-time":"2014-02-11T22:13:36Z","timestamp":1392156816000},"page":"e004320","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":22,"title":["The seasonal variation of Achilles tendon ruptures in Vancouver, Canada: a retrospective study"],"prefix":"10.1136","volume":"4","author":[{"given":"Alex","family":"Scott","sequence":"first","affiliation":[{"name":"Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada"},{"name":"Centre for Hip Health and Mobility, Vancouver, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Navdeep","family":"Grewal","sequence":"additional","affiliation":[{"name":"Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada"},{"name":"Centre for Hip Health and Mobility, Vancouver, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pierre","family":"Guy","sequence":"additional","affiliation":[{"name":"Centre for Hip Health and Mobility, Vancouver, British Columbia, Canada"},{"name":"Department of Orthopaedics, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2014,2,11]]},"reference":[{"key":"2025121510400226000_4.2.e004320.1","doi-asserted-by":"publisher","DOI":"10.1016\/S0020-1383(98)00147-8"},{"key":"2025121510400226000_4.2.e004320.2","doi-asserted-by":"publisher","DOI":"10.1097\/00042752-199907000-00007"},{"key":"2025121510400226000_4.2.e004320.3","doi-asserted-by":"publisher","DOI":"10.1177\/107110070502601106"},{"key":"2025121510400226000_4.2.e004320.4","doi-asserted-by":"crossref","first-page":"118","DOI":"10.3109\/17453677608998983","article-title":"The incidence of Achilles tendon rupture","volume":"47","author":"Nillius","year":"1976","journal-title":"Acta Orthop Scand"},{"key":"2025121510400226000_4.2.e004320.5","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-011-1511-3"},{"key":"2025121510400226000_4.2.e004320.6","doi-asserted-by":"publisher","DOI":"10.1177\/1938640009351138"},{"key":"2025121510400226000_4.2.e004320.7","doi-asserted-by":"crossref","first-page":"63","DOI":"10.1016\/j.scispo.2003.12.003","article-title":"French football epidemiological study for soccer injuries","volume":"19","author":"Rochcongar","year":"2004","journal-title":"Sci Sports"},{"key":"2025121510400226000_4.2.e004320.8","doi-asserted-by":"publisher","DOI":"10.1136\/bjsm.2005.018341"},{"key":"2025121510400226000_4.2.e004320.9","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0838.2004.00344.x"},{"key":"2025121510400226000_4.2.e004320.10","doi-asserted-by":"publisher","DOI":"10.1007\/s00402-012-1476-9"},{"key":"2025121510400226000_4.2.e004320.11","doi-asserted-by":"publisher","DOI":"10.1159\/000235701"},{"key":"2025121510400226000_4.2.e004320.12","doi-asserted-by":"publisher","DOI":"10.1016\/S0020-1383(96)00200-8"},{"key":"2025121510400226000_4.2.e004320.13","doi-asserted-by":"publisher","DOI":"10.1097\/01.jsm.0000165347.55638.23"},{"key":"2025121510400226000_4.2.e004320.14","doi-asserted-by":"publisher","DOI":"10.1007\/s004020050410"},{"key":"2025121510400226000_4.2.e004320.15","doi-asserted-by":"publisher","DOI":"10.1007\/s11255-011-0111-y"},{"key":"2025121510400226000_4.2.e004320.16","doi-asserted-by":"crossref","first-page":"1228 e23","DOI":"10.1016\/j.amjmed.2012.05.027","article-title":"Impact of age, sex, obesity, and steroid use on quinolone-associated tendon disorders","volume":"125","author":"Wise","year":"2012","journal-title":"Am J Med"},{"key":"2025121510400226000_4.2.e004320.17","doi-asserted-by":"crossref","first-page":"467","DOI":"10.1177\/03635465980260032201","article-title":"Acute Achilles tendon rupture in badminton players","volume":"26","author":"Fahlstrom","year":"1998","journal-title":"Am J Sports Med"},{"key":"2025121510400226000_4.2.e004320.18","doi-asserted-by":"publisher","DOI":"10.3122\/jabfm.2.3.196"},{"key":"2025121510400226000_4.2.e004320.19","doi-asserted-by":"crossref","first-page":"231","DOI":"10.1249\/00005768-198024000-00002","article-title":"Achilles tendon disorders in runners\u2014a review","volume":"12","author":"Smart","year":"1980","journal-title":"Med Sci Sports Exerc"},{"key":"2025121510400226000_4.2.e004320.20","doi-asserted-by":"crossref","first-page":"588","DOI":"10.1111\/j.1600-0838.2009.00995.x","article-title":"Acute hamstring injuries in Danish elite football: a 12-month prospective registration study among 374 players","volume":"20","author":"Petersen","year":"2010","journal-title":"Scand J Med Sci Sports"},{"key":"2025121510400226000_4.2.e004320.21","doi-asserted-by":"publisher","DOI":"10.1152\/japplphysiol.91008.2008"},{"key":"2025121510400226000_4.2.e004320.22","doi-asserted-by":"publisher","DOI":"10.1177\/0363546504270454"},{"key":"2025121510400226000_4.2.e004320.23","doi-asserted-by":"publisher","DOI":"10.1136\/bjsports-2011-090342"},{"key":"2025121510400226000_4.2.e004320.24","doi-asserted-by":"publisher","DOI":"10.1177\/036354657900700405"},{"key":"2025121510400226000_4.2.e004320.25","doi-asserted-by":"publisher","DOI":"10.1186\/1471-2474-11-165"},{"key":"2025121510400226000_4.2.e004320.26","doi-asserted-by":"publisher","DOI":"10.1152\/japplphysiol.01463.2011"}],"container-title":["BMJ Open"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bmjopen-2013-004320","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,12,15]],"date-time":"2025-12-15T18:40:07Z","timestamp":1765824007000},"score":1,"resource":{"primary":{"URL":"https:\/\/bmjopen.bmj.com\/lookup\/doi\/10.1136\/bmjopen-2013-004320"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2014,2]]},"references-count":26,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2014,2,11]]},"published-print":{"date-parts":[[2014,2]]}},"alternative-id":["10.1136\/bmjopen-2013-004320"],"URL":"https:\/\/doi.org\/10.1136\/bmjopen-2013-004320","relation":{},"ISSN":["2044-6055","2044-6055"],"issn-type":[{"value":"2044-6055","type":"print"},{"value":"2044-6055","type":"electronic"}],"subject":[],"published":{"date-parts":[[2014,2]]}}}