{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,17]],"date-time":"2026-10-17T13:06:59Z","timestamp":1792242419837,"version":"4.4.0"},"reference-count":24,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2017,8,16]],"date-time":"2017-08-16T00:00:00Z","timestamp":1502841600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2017,8,16]],"date-time":"2017-08-16T00:00:00Z","timestamp":1502841600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"},{"start":{"date-parts":[[2017,8,16]],"date-time":"2017-08-16T00:00:00Z","timestamp":1502841600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"}],"content-domain":{"domain":["clinicalkey.jp","clinicalkey.com","clinicalkey.es","arthroscopyjournal.org","clinicalkey.com.au","clinicalkey.fr","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Arthroscopy"],"published-print":{"date-parts":[[2017,12]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To evaluate the clinical results of an arthroscopy\u2010assisted latissimus dorsi tendon transfer (aLD) for irreparable posterosuperior cuff tears as a primary surgery. The secondary aim of this study was to quantify the learning curve using the log\u2010linear model. We hypothesized that aLD significantly improved shoulder function and that there was consistent reduction of the operative time in support of a learning\u2010curve effect.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>After the arthroscopic partial repair was completed, the latissimus dorsi tendon was harvested via axillary mini\u2010open incision and fixed with a knotless anchor arthroscopically. All patients were evaluated preoperatively and postoperatively using a modified University of California Los Angeles (UCLA) scoring system, active range of motion, and the visual analog scale (VAS) for pain. The operative time was recorded to quantify the learning curve using a log\u2010linear model.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Thirty patients with a mean age of 67.4\u00a0years who underwent aLD were included. At a mean of 34 months after an aLD, the mean UCLA score increased from 15.7 preoperatively to 28.8 postoperatively (\n                      <jats:italic>P<\/jats:italic>\n                      \u00a0&lt; .001). The mean active forward elevation increased from 105\u00b0 preoperatively to 149\u00b0 postoperatively (\n                      <jats:italic>P<\/jats:italic>\n                      \u00a0&lt; .001). The mean active external rotation increased from 22\u00b0 preoperatively to 32\u00b0 postoperatively (\n                      <jats:italic>P<\/jats:italic>\n                      &lt; .001). The VAS improved from 58\u00a0mm to 18\u00a0mm\u00a0(\n                      <jats:italic>P<\/jats:italic>\n                      &lt; .001). In all but 2 cases (93%), the preoperative osteoarthritis grade was maintained. The mean operative time was 145\u00a0minutes. A significant linear correlation was observed between the operative time and cumulative volume of cases after performing a logarithmic transformation. The learning rate was calculated as 84%.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Arthroscopy\u2010assisted latissimus dorsi tendon transfer is a technically demanding procedure; however, it can lead to significant improvements in overall shoulder pain and function. This study also confirmed a learning\u2010curve effect for the aLD. The learning rate was 84%, indicating the existence of a long learning period.<\/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.2017.06.015","type":"journal-article","created":{"date-parts":[[2017,8,16]],"date-time":"2017-08-16T17:16:34Z","timestamp":1502903794000},"page":"2144-2151","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":30,"title":["Clinical and Radiographic Outcomes With Assessment of the Learning Curve in Arthroscopically Assisted Latissimus Dorsi Tendon Transfer for Irreparable Posterosuperior Rotator Cuff Tears"],"prefix":"10.1002","volume":"33","author":[{"given":"Kotaro","family":"Yamakado","sequence":"first","affiliation":[{"name":"Department of Orthopaedics Fukui General Hospital Fukui Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2017,8,16]]},"reference":[{"key":"e_1_2_2_2_2","doi-asserted-by":"publisher","DOI":"10.1097\/00003086-198807000-00008"},{"key":"e_1_2_2_3_2","doi-asserted-by":"publisher","DOI":"10.1097\/00003086-199202000-00022"},{"key":"e_1_2_2_4_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.K.00841"},{"key":"e_1_2_2_5_2","doi-asserted-by":"publisher","DOI":"10.5435\/JAAOS-21-08-492"},{"key":"e_1_2_2_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2006.12.021"},{"key":"e_1_2_2_7_2","doi-asserted-by":"publisher","DOI":"10.1097\/BTE.0b013e318169e991"},{"key":"e_1_2_2_8_2","first-page":"149","article-title":"Massive cuff tears treated with arthroscopically assisted latissimus dorsi transfer. 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