{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T20:38:21Z","timestamp":1790887101673,"version":"4.1.0"},"reference-count":26,"publisher":"Springer Science and Business Media LLC","issue":"1","content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Musculoskelet Disord"],"published-print":{"date-parts":[[2017,12]]},"DOI":"10.1186\/s12891-017-1690-2","type":"journal-article","created":{"date-parts":[[2017,8,8]],"date-time":"2017-08-08T10:01:45Z","timestamp":1502186505000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":29,"title":["Patellar tendinopathy in young elite soccer\u2013 clinical and sonographical analysis of a German elite soccer academy"],"prefix":"10.1186","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5788-6875","authenticated-orcid":false,"given":"Gerrit","family":"Bode","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thorsten","family":"Hammer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"N.","family":"Karvouniaris","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M. J.","family":"Feucht","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L.","family":"Konstantinidis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"N. P.","family":"S\u00fcdkamp","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.","family":"Hirschm\u00fcller","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2017,8,8]]},"reference":[{"key":"1690_CR1","doi-asserted-by":"crossref","unstructured":"Gissl\u00e9n K and Alfredson. Neovascularisation and pain in jumper's knee: a prospective clinical and sonographic study in elite junior volleyball players. Br J Sports Med. 2005;39(7):423\u20138.","DOI":"10.1136\/bjsm.2004.013342"},{"issue":"4","key":"1690_CR2","doi-asserted-by":"crossref","first-page":"216","DOI":"10.1034\/j.1600-0838.2000.010004216.x","volume":"10","author":"JL Cook","year":"2000","unstructured":"Cook JL, et al. Patellar tendinopathy in junior basketball players: a controlled clinical and ultrasonographic study of 268 patellar tendons in players aged 14-18 years. Scand J Med Sci Sports. 2000;10(4):216\u201320.","journal-title":"Scand J Med Sci Sports"},{"issue":"4","key":"1690_CR3","doi-asserted-by":"crossref","first-page":"488","DOI":"10.1177\/03635465020300040701","volume":"30","author":"U Fredberg","year":"2002","unstructured":"Fredberg U, Bolvig L. Significance of ultrasonographically detected asymptomatic tendinosis in the patellar and achilles tendons of elite soccer players: a longitudinal study. Am J Sports Med. 2002;30(4):488\u201391.","journal-title":"Am J Sports Med"},{"issue":"9","key":"1690_CR4","doi-asserted-by":"crossref","first-page":"1984","DOI":"10.1177\/0363546511413370","volume":"39","author":"J Zwerver","year":"2011","unstructured":"Zwerver J, Bredeweg SW, van den Akker-Scheek I. Prevalence of Jumper's knee among nonelite athletes from different sports: a cross-sectional survey. Am J Sports Med. 2011;39(9):1984\u20138.","journal-title":"Am J Sports Med"},{"issue":"4","key":"1690_CR5","doi-asserted-by":"crossref","first-page":"289","DOI":"10.2165\/00007256-198603040-00005","volume":"3","author":"A Ferretti","year":"1986","unstructured":"Ferretti A. Epidemiology of jumper's knee. Sports Med. 1986;3(4):289\u201395.","journal-title":"Sports Med"},{"issue":"9","key":"1690_CR6","doi-asserted-by":"crossref","first-page":"1906","DOI":"10.1177\/0363546511408877","volume":"39","author":"M Hagglund","year":"2011","unstructured":"Hagglund M, Zwerver J, Ekstrand J. Epidemiology of patellar tendinopathy in elite male soccer players. Am J Sports Med. 2011;39(9):1906\u201311.","journal-title":"Am J Sports Med"},{"issue":"1","key":"1690_CR7","doi-asserted-by":"crossref","first-page":"119","DOI":"10.1177\/03635465030310010401","volume":"31","author":"R Bahr","year":"2003","unstructured":"Bahr R, Reeser JC. Federation Internationale de, Injuries among world-class professional beach volleyball players. The Federation Internationale de Volleyball beach volleyball injury study. Am J Sports Med. 2003;31(1):119\u201325.","journal-title":"Am J Sports Med"},{"issue":"4","key":"1690_CR8","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1007\/BF00266866","volume":"8","author":"A Ferretti","year":"1985","unstructured":"Ferretti A, et al. The natural history of jumper's knee. Patellar or quadriceps tendonitis. Int Orthop. 1985;8(4):239\u201342.","journal-title":"Int Orthop"},{"issue":"4","key":"1690_CR9","doi-asserted-by":"crossref","first-page":"545","DOI":"10.1007\/s40279-015-0438-0","volume":"46","author":"M Simpson","year":"2016","unstructured":"Simpson M, Rio E, Cook J. At What Age Do Children and Adolescents Develop Lower Limb Tendon Pathology or Tendinopathy? A Systematic Review and Meta-analysis. Sports Med. 2016;46(4):545\u201357.","journal-title":"Sports Med"},{"issue":"9","key":"1690_CR10","doi-asserted-by":"crossref","first-page":"1277","DOI":"10.1007\/s00402-015-2270-2","volume":"135","author":"J Nakase","year":"2015","unstructured":"Nakase J, et al. Precise risk factors for Osgood-Schlatter disease. Arch Orthop Trauma Surg. 2015;135(9):1277\u201381.","journal-title":"Arch Orthop Trauma Surg"},{"issue":"6","key":"1690_CR11","doi-asserted-by":"crossref","first-page":"612","DOI":"10.3109\/02841859809175485","volume":"39","author":"M Paavola","year":"1998","unstructured":"Paavola M, et al. Ultrasonography in the differential diagnosis of Achilles tendon injuries and related disorders. A comparison between pre-operative ultrasonography and surgical findings. Acta Radiol. 1998;39(6):612\u20139.","journal-title":"Acta Radiol"},{"issue":"10","key":"1690_CR12","doi-asserted-by":"crossref","first-page":"700","DOI":"10.1136\/bjsm.2004.016410","volume":"39","author":"JL Cook","year":"2005","unstructured":"Cook JL, et al. High reproducibility of patellar tendon vascularity assessed by colour Doppler ultrasonography: a reliable measurement tool for quantifying tendon pathology. Br J Sports Med. 2005;39(10):700\u20133.","journal-title":"Br J Sports Med"},{"issue":"7","key":"1690_CR13","doi-asserted-by":"crossref","first-page":"458","DOI":"10.1136\/bjsm.2004.014530","volume":"39","author":"JL Cook","year":"2005","unstructured":"Cook JL, et al. Vascularity and pain in the patellar tendon of adult jumping athletes: a 5 month longitudinal study. Br J Sports Med. 2005;39(7):458\u201361. discussion 458-61.","journal-title":"Br J Sports Med"},{"issue":"1","key":"1690_CR14","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1016\/S1440-2440(98)80005-4","volume":"1","author":"PJ Visentini","year":"1998","unstructured":"Visentini PJ, et al. The VISA score: an index of severity of symptoms in patients with jumper's knee (patellar tendinosis). Victorian Institute of Sport Tendon Study Group. J Sci Med Sport. 1998;1(1):22\u20138.","journal-title":"J Sci Med Sport"},{"issue":"4","key":"1690_CR15","doi-asserted-by":"crossref","first-page":"387","DOI":"10.1055\/s-0029-1245189","volume":"31","author":"A Hirschmuller","year":"2010","unstructured":"Hirschmuller A, et al. Achilles tendon power Doppler sonography in 953 long distance runners - a cross sectional study. Ultraschall Med. 2010;31(4):387\u201393.","journal-title":"Ultraschall Med"},{"issue":"2","key":"1690_CR16","doi-asserted-by":"crossref","first-page":"199","DOI":"10.1249\/MSS.0b013e31822b7318","volume":"44","author":"A Hirschmuller","year":"2012","unstructured":"Hirschmuller A, et al. Prognostic value of Achilles tendon Doppler sonography in asymptomatic runners. Med Sci Sports Exerc. 2012;44(2):199\u2013205.","journal-title":"Med Sci Sports Exerc"},{"issue":"7","key":"1690_CR17","doi-asserted-by":"crossref","first-page":"423","DOI":"10.1136\/bjsm.2004.013342","volume":"39","author":"H Alfredson","year":"2005","unstructured":"Alfredson H, Gissl\u00e9n K1, Neovascularisation and pain in jumper's knee: a prospective clinical and sonographic study in elite junior volleyball players. Br J Sports Med. 2005;39(7):423\u20138.","journal-title":"Br J Sports Med"},{"issue":"5","key":"1690_CR18","doi-asserted-by":"crossref","first-page":"298","DOI":"10.1136\/bjsm.2004.014290","volume":"39","author":"K Gisslen","year":"2005","unstructured":"Gisslen K, et al. High prevalence of jumper's knee and sonographic changes in Swedish elite junior volleyball players compared to matched controls. Br J Sports Med. 2005;39(5):298\u2013301.","journal-title":"Br J Sports Med"},{"issue":"5","key":"1690_CR19","doi-asserted-by":"crossref","first-page":"291","DOI":"10.1111\/j.1600-0838.1996.tb00473.x","volume":"6","author":"O Lian","year":"1996","unstructured":"Lian O, et al. Relationship between symptoms of jumper's knee and the ultrasound characteristics of the patellar tendon among high level male volleyball players. Scand J Med Sci Sports. 1996;6(5):291\u20136.","journal-title":"Scand J Med Sci Sports"},{"issue":"2","key":"1690_CR20","first-page":"159","volume":"37","author":"M Cassel","year":"2016","unstructured":"Cassel M, et al. Tendon Adaptation to Sport-specific Loading in Adolescent Athletes. Int J Sports Med. 2016;37(2):159\u201364.","journal-title":"Int J Sports Med"},{"issue":"3","key":"1690_CR21","doi-asserted-by":"crossref","first-page":"308","DOI":"10.1111\/sms.12206","volume":"25","author":"I Janssen","year":"2015","unstructured":"Janssen I, et al. Previously identified patellar tendinopathy risk factors differ between elite and sub-elite volleyball players. Scand J Med Sci Sports. 2015;25(3):308\u201314.","journal-title":"Scand J Med Sci Sports"},{"issue":"4","key":"1690_CR22","doi-asserted-by":"crossref","first-page":"561","DOI":"10.1177\/0363546504270454","volume":"33","author":"OB Lian","year":"2005","unstructured":"Lian OB, Engebretsen L, Bahr R. Prevalence of jumper's knee among elite athletes from different sports: a cross-sectional study. Am J Sports Med. 2005;33(4):561\u20137.","journal-title":"Am J Sports Med"},{"issue":"4","key":"1690_CR23","doi-asserted-by":"crossref","first-page":"e283","DOI":"10.1111\/sms.12166","volume":"24","author":"F Mersmann","year":"2014","unstructured":"Mersmann F, et al. Evidence of imbalanced adaptation between muscle and tendon in adolescent athletes. Scand J Med Sci Sports. 2014;24(4):e283\u20139.","journal-title":"Scand J Med Sci Sports"},{"issue":"2","key":"1690_CR24","doi-asserted-by":"crossref","first-page":"e89","DOI":"10.1111\/sms.12023","volume":"23","author":"C Couppe","year":"2013","unstructured":"Couppe C, et al. Differences in tendon properties in elite badminton players with or without patellar tendinopathy. Scand J Med Sci Sports. 2013;23(2):e89\u201395.","journal-title":"Scand J Med Sci Sports"},{"key":"1690_CR25","doi-asserted-by":"publisher","unstructured":"Mersmann F, et al. Muscle and tendon adaptation in adolescent athletes: A longitudinal study. Scand J Med Sci Sports. 2015;27(1):75-82. doi:\n10.1111\/sms.12631\n\n.","DOI":"10.1111\/sms.12631"},{"issue":"1","key":"1690_CR26","doi-asserted-by":"crossref","first-page":"60","DOI":"10.1055\/s-2007-963027","volume":"29","author":"U Fredberg","year":"2008","unstructured":"Fredberg U, et al. Ultrasonography in evaluation of Achilles and patella tendon thickness. Ultraschall Med. 2008;29(1):60\u20135.","journal-title":"Ultraschall Med"}],"container-title":["BMC Musculoskeletal Disorders"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1186\/s12891-017-1690-2.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2017,8,8]],"date-time":"2017-08-08T10:01:57Z","timestamp":1502186517000},"score":1,"resource":{"primary":{"URL":"http:\/\/bmcmusculoskeletdisord.biomedcentral.com\/articles\/10.1186\/s12891-017-1690-2"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,8,8]]},"references-count":26,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2017,12]]}},"alternative-id":["1690"],"URL":"https:\/\/doi.org\/10.1186\/s12891-017-1690-2","relation":{},"ISSN":["1471-2474"],"issn-type":[{"value":"1471-2474","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,8,8]]},"article-number":"344"}}