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This study included any patients who underwent both the pre\u2010 and postoperative MRI and excluded patients with a previous history of any elbow surgery. Pre\u2010 and postoperative MRI findings were qualitatively categorized into 4 grades, quantified by measuring the percentage of tendinopathy area, and compared between the groups.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Preoperatively, grading scores and percentages did not show significant differences between groups (\n                      <jats:italic>P<\/jats:italic>\n                      \u00a0= .050 and .519). The respective numbers of patients with grades 1, 2, 3, and 4 were 1 (4%), 3 (13%), 10 (42%), and 10 (42%) in the recovered group; and 1 (10%), 2 (20%), 7 (70%), and 0 (0%) in the unrecovered group. The average percentages in the recovered and unrecovered groups were 42.3% (73.9 mm\n                      <jats:sup>2<\/jats:sup>\n                      \/168.4 mm\n                      <jats:sup>2<\/jats:sup>\n                      ); and 36.5% (50.5 mm\n                      <jats:sup>2<\/jats:sup>\n                      \/131.0 mm\n                      <jats:sup>2<\/jats:sup>\n                      ). However, postoperatively, they were significantly lower in the recovered group than in the unrecovered group (\n                      <jats:italic>P<\/jats:italic>\n                      \u00a0= .007 and .014). The numbers and percentages in the recovered and unrecovered groups were 15 (63%), 8 (33%), 1 (4%), and 0 (0%) and 17.0% (28.6mm\n                      <jats:sup>2<\/jats:sup>\n                      \/169.8mm\n                      <jats:sup>2<\/jats:sup>\n                      ) and 2 (20%), 3 (30%), 5 (50%), and 0 (0%) and 30.5% (39.0 mm\n                      <jats:sup>2<\/jats:sup>\n                      \/131.8 mm\n                      <jats:sup>2<\/jats:sup>\n                      ).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Qualitative and quantitative MRI is useful for evaluating the progress of tendon healing after arthroscopic debridement. In the recovered and unrecovered groups, improvement of tendinopathy area were 60% versus 16%, indicating that postoperative MRI findings reflect clinical outcomes.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>IV, case series with subgroup analysis.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1016\/j.arthro.2022.07.019","type":"journal-article","created":{"date-parts":[[2022,8,10]],"date-time":"2022-08-10T17:50:16Z","timestamp":1660153816000},"page":"3120-3129","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":7,"title":["Arthroscopic Debridement for Refractory Lateral Epicondylitis Results for Substantial Improvement in Tendinosis Scores and Good Clinical Outcomes: Qualitative and Quantitative Magnetic Resonance Imaging Analysis"],"prefix":"10.1002","volume":"38","author":[{"given":"Satoshi","family":"Miyamura","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery Japan Community Health Care Organization Osaka Hospital Osaka"},{"name":"Department of Orthopaedic Surgery Osaka University Graduate School of Medicine Suita Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ko","family":"Temporin","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Japan Community Health Care Organization Osaka Hospital Osaka"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sataka","family":"Miyata","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Japan Community Health Care Organization Osaka Hospital Osaka"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tasuku","family":"Miyake","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Japan Community Health 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Osaka"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2022,8,10]]},"reference":[{"key":"e_1_2_2_2_2","doi-asserted-by":"publisher","DOI":"10.1177\/1558944717701244"},{"key":"e_1_2_2_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhsa.2009.02.023"},{"key":"e_1_2_2_4_2","doi-asserted-by":"publisher","DOI":"10.1097\/MD.0000000000002681"},{"key":"e_1_2_2_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0749-8063(99)70031-9"},{"key":"e_1_2_2_6_2","doi-asserted-by":"publisher","DOI":"10.1067\/mse.2000.108533"},{"key":"e_1_2_2_7_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00330-017-5084-5"},{"key":"e_1_2_2_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jse.2004.07.011"},{"key":"e_1_2_2_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jse.2009.07.064"},{"key":"e_1_2_2_10_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00776-008-1304-9"},{"key":"e_1_2_2_11_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhsa.2010.11.040"},{"key":"e_1_2_2_12_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2005.08.011"},{"key":"e_1_2_2_13_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.F.00512"},{"key":"e_1_2_2_14_2","doi-asserted-by":"publisher","DOI":"10.2307\/2529310"},{"key":"e_1_2_2_15_2","volume-title":"Fundamental 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