{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,1]],"date-time":"2026-02-01T05:56:57Z","timestamp":1769925417144,"version":"3.49.0"},"reference-count":22,"publisher":"BMJ","issue":"11","license":[{"start":{"date-parts":[[2025,11,9]],"date-time":"2025-11-09T00:00:00Z","timestamp":1762646400000},"content-version":"unspecified","delay-in-days":8,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Open"],"accepted":{"date-parts":[[2025,9,30]]},"published-print":{"date-parts":[[2025,11]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Gluteal tendon tears\u2014frequently dubbed the \u2018rotator cuff tears of the hip\u2019\u2014are a common but often underdiagnosed cause of lateral hip pain and abductor dysfunction, especially in middle-aged to older women. While both open and endoscopic repair techniques are used, current literature suggests similar functional outcomes but higher complication rates following open repair. However, evidence is mainly derived from small retrospective case series, and no randomised trials exist. This systematic review and multilevel meta-analysis aims to compare the efficacy, safety and complication profiles of endoscopic versus open gluteal tendon repair.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A comprehensive literature search will be conducted across PubMed, Embase, CENTRAL and Epistemonikos without language or date restrictions. Eligible studies include randomised controlled trials and observational studies reporting on open or endoscopic gluteal tendon repair. Primary outcomes will include pain, functional scores and complication rates. Risk of bias will be assessed using the RoB 2 tool for RCTs and ROBINS-I for non-randomised studies. A three-level random-effects meta-analysis will be performed using inverse variance weighting and Hartung-Knapp adjustments. Heterogeneity will be quantified using the I\u00b2 statistic.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Ethics and dissemination<\/jats:title>\n                    <jats:p>Ethical approval is not required for this secondary analysis of published data. Results will be disseminated via peer-reviewed publication and conference presentations.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Timeline and review status<\/jats:title>\n                    <jats:p>\n                      The review will commence immediately after acceptance of this study protocol in\n                      <jats:italic>BMJ Open<\/jats:italic>\n                      . The systematic review and multilevel meta-analysis will be conducted as efficiently as possible, with anticipated completion approximately 3\u20136 months after initiation.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>PROSPERO registration number<\/jats:title>\n                    <jats:p>CRD420251088765<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/bmjopen-2025-107898","type":"journal-article","created":{"date-parts":[[2025,11,10]],"date-time":"2025-11-10T05:45:47Z","timestamp":1762753547000},"page":"e107898","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Protocol for systematic review and multilevel meta-analysis comparing efficacy and safety of endoscopic versus open gluteal tendon 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Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ariana","family":"Lott","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, NYU Langone Orthopedic Hospital, New York, New York, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ingo J","family":"Banke","sequence":"additional","affiliation":[{"name":"Clinic of Orthopaedics and Sports Orthopaedics, School of Medicine and Health, TUM University Hospital, Technical University of Munich, Munich, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2025,11,9]]},"reference":[{"key":"2025120413264039000_15.11.e107898.1","doi-asserted-by":"publisher","DOI":"10.1136\/jisakos-2020-000474"},{"key":"2025120413264039000_15.11.e107898.2","doi-asserted-by":"crossref","first-page":"1193","DOI":"10.1016\/j.arthro.2017.10.022","article-title":"Endoscopic Repair of Partial-Thickness Undersurface Tears of the Abductor 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