{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T12:21:01Z","timestamp":1788351661603,"version":"build-2803163510"},"reference-count":27,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2021,1,29]],"date-time":"2021-01-29T00:00:00Z","timestamp":1611878400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2021,1,29]],"date-time":"2021-01-29T00:00:00Z","timestamp":1611878400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"},{"start":{"date-parts":[[2021,1,29]],"date-time":"2021-01-29T00:00:00Z","timestamp":1611878400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2021,1,29]],"date-time":"2021-01-29T00:00:00Z","timestamp":1611878400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["81902205"],"award-info":[{"award-number":["81902205"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"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":[[2021,3]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To investigate the change in muscle volume around the hip in patients with femoroacetabular impingement (FAI) after arthroscopy and evaluate other factors related to muscle change.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We performed a retrospective review of magnetic resonance imaging data of patients with FAI who underwent hip arthroscopy. Magnetic resonance imaging was obtained pre\u2010 and postoperatively. The cross\u2010sectional area (CSA) of muscles were determined on axial images. The Wilcoxon signed\u2010rank test was used to determine the differences between pre\u2010 and postoperative hip muscle CSA. The correlations of change in muscle CSA with age, sex, body mass index, pain level, preoperative symptom duration, follow\u2010up time, and multiple validated patient\u2010reported outcomes were also analyzed with a Spearman rank correlation test.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Fifty\u2010one patients with a mean age of 36.5 \u00b1 5.6 years were included and analyzed. The follow\u2010up was 26.6 \u00b1 0.5 months (range, 24\u201040 months), and 27 (52.9%) were women. Patients with FAI showed increased hip muscle CSA of gluteus maximus (\n                      <jats:italic>P<\/jats:italic>\n                      \u00a0= .002) and gluteus minimus (\n                      <jats:italic>P<\/jats:italic>\n                      \u00a0= .001). Post\u2010 compared with preoperative, the value for the change in medius CSA was underpowered, and no differences in other hip muscle CSAs were observed. The increased muscle CSA of the gluteus maximus was significantly correlated with the improvement of modified Harris Hip Score (\u03c1\u00a0= 0.404;\n                      <jats:italic>P<\/jats:italic>\n                      \u00a0= .003). The increased muscle CSA of the gluteus minimus was significantly correlated with the improvement of pain Visual Analog Scale (\u03c1\u00a0= 0.452;\n                      <jats:italic>P<\/jats:italic>\n                      \u00a0= .001). Age, body mass index, sex, symptom duration, and follow\u2010up time were not significantly correlated with change in muscle CSA.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Patients with FAI have a significantly increased postoperative muscle CSA of the gluteus maximus (7.8%) and the gluteus minimus (11.6%) compared with preoperative values. The increased muscle CSA of the gluteus maximus and gluteus minimus was significantly correlated with improvement in modified Harris Hip Score and pain Visual Analog Scale, respectively. The increase of muscle volume may be associated with the improvement of subjective function and pain relief.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Levels of Evidence<\/jats:title>\n                    <jats:p>Level IV, therapeutic case series.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1016\/j.arthro.2020.10.049","type":"journal-article","created":{"date-parts":[[2021,1,29]],"date-time":"2021-01-29T11:05:39Z","timestamp":1611918339000},"page":"862-870","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":24,"title":["Volume of Gluteus Maximus and Minimus Increases After Hip Arthroscopy for Femoroacetabular Impingement Syndrome"],"prefix":"10.1002","volume":"37","author":[{"given":"Fan","family":"Yang","sequence":"first","affiliation":[{"name":"Institute of Sports Medicine Beijing Key Laboratory of Sports Injuries Peking University Third Hospital Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mahmut","family":"Mamtimin","sequence":"additional","affiliation":[{"name":"Institute of Sports Medicine Beijing Key Laboratory of Sports Injuries Peking University Third Hospital Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yu\u2010Peng","family":"Duan","sequence":"additional","affiliation":[{"name":"Institute of Sports Medicine Beijing Key Laboratory of Sports Injuries Peking University Third Hospital Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hao","family":"Sun","sequence":"additional","affiliation":[{"name":"Institute of Sports Medicine Beijing Key Laboratory of Sports Injuries Peking University Third Hospital Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yan","family":"Xu","sequence":"additional","affiliation":[{"name":"Institute of Sports Medicine Beijing Key Laboratory of Sports Injuries Peking University Third Hospital Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin","family":"Zhang","sequence":"additional","affiliation":[{"name":"Institute of Sports Medicine Beijing Key Laboratory of Sports Injuries Peking University Third Hospital Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiao\u2010Yan","family":"Zheng","sequence":"additional","affiliation":[{"name":"Department of Agroforestry and Medicine The Open University of China Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jia\u2010Lin","family":"Fan","sequence":"additional","affiliation":[{"name":"Department of Medical Statistics Chinese PLA General Hospital Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hong\u2010Jie","family":"Huang","sequence":"additional","affiliation":[{"name":"Institute of Sports Medicine Beijing Key Laboratory of Sports Injuries Peking University Third Hospital Beijing 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