{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,15]],"date-time":"2026-03-15T11:02:18Z","timestamp":1773572538760,"version":"3.50.1"},"reference-count":24,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2013,7,8]],"date-time":"2013-07-08T00:00:00Z","timestamp":1373241600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2013,7,8]],"date-time":"2013-07-08T00:00:00Z","timestamp":1373241600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"},{"start":{"date-parts":[[2013,7,8]],"date-time":"2013-07-08T00:00:00Z","timestamp":1373241600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2013,7,8]],"date-time":"2013-07-08T00:00:00Z","timestamp":1373241600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"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":[[2013,8]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>The purpose of this study was to evaluate the mid\u2010 and long\u2010term efficacy of the arthroscopic patellar release (APR) in a representative number of competitive athletes.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>This prospective study included 35 competitive athletes who underwent APR for treatment of chronic refractory patellar tendinopathy. The minimum follow\u2010up period was 24 months. Preoperatively and at follow\u2010up, we measured the Swedish Victorian Institute of Sport Assessment for Patella (VISA\u2010P) and modified Blazina score for assessment of functional outcome. The patients rated their subjective knee function (0% to 100%) and maximum pain during exercise on a visual analog scale (0 to 10 points). We inquired about time required for full return to sports.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Thirty athletes (27 male individuals, 3 female individuals) were available for clinical examination after a mean follow\u2010up period of 4.4 years (\u03c3\u00a0= 3.0 years). The follow\u2010up rate was 30 of 35 (86%). Mean age at surgery was 27.6 years (\u03c3\u00a0= 7.4). The mean VISA\u2010P score improved from 57.3 (\u03c3\u00a0= 11.4) to 95.1 (\u03c3\u00a0= 8.2) and the mean Blazina score improved from 4.0 (\u03c3\u00a0= 0.8) to 0.3 (\u03c3\u00a0= 0.7). Average subjective knee function improved from 48.8% (\u03c3\u00a0= 18.5%) to 90.5% (\u03c3\u00a0= 9.8%). The mean pain level decreased from 5.7 (\u03c3\u00a0= 1.1) to 0.6 (\u03c3\u00a0= 1.2%). All changes were significant (\n                      <jats:italic>P<\/jats:italic>\n                      &lt; .01). Twenty\u2010three (76.7%) athletes were able to perform sports at previous levels without any symptoms. The mean time required for full return to sports was 4.4 months (1.5 to 12.0 months; \u03c3\u00a0= 3.3). Less pronounced symptoms recurred in 3 (10%) athletes.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>After APR, 97% of patients obtained excellent or good functional outcomes with a mean follow\u2010up of 4.4 years. Three of 4 athletes achieved asymptomatic previous sports levels, returning to full sports at an average of 4.4 months. Symptoms partially recurred in 10% of participants.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>Level IV: prospective therapeutic case series.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1016\/j.arthro.2013.05.004","type":"journal-article","created":{"date-parts":[[2013,7,4]],"date-time":"2013-07-04T05:46:13Z","timestamp":1372916773000},"page":"1338-1345","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":44,"title":["Mid\u2010 and Long\u2010Term Efficacy of the Arthroscopic Patellar Release for Treatment of Patellar Tendinopathy Unresponsive to Nonoperative Management"],"prefix":"10.1002","volume":"29","author":[{"given":"Dirk","family":"Maier","sequence":"first","affiliation":[{"name":"Department of Orthopedic and Trauma Surgery University Medical Center Freiburg Freiburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lutz","family":"Bornebusch","sequence":"additional","affiliation":[{"name":"Department of Orthopedic and Trauma Surgery University Medical Center Freiburg Freiburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gian M.","family":"Salzmann","sequence":"additional","affiliation":[{"name":"Department of Orthopedic and Trauma Surgery University Medical Center Freiburg Freiburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Norbert P.","family":"S\u00fcdkamp","sequence":"additional","affiliation":[{"name":"Department of Orthopedic and Trauma Surgery University Medical Center Freiburg Freiburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter","family":"Ogon","sequence":"additional","affiliation":[{"name":"Center of Orthopedic Sports Medicine Freiburg Freiburg 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