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Arthroscopic bone block procedures have gained popularity due to their minimally invasive nature and their ability to restore glenoid concavity while addressing associated intra\u2010articular pathology. We describe a fully arthroscopic posterior glenoid bone block technique using a tricortical iliac crest autograft fixed with independent cortical buttons from the Glenoid Bone Loss\u2010Advanced Instability System (Smith &amp; Nephew Andover, MA, USA). A commonly available anterior glenoid guide is used with an adapted posterior application. The technique emphasizes meticulous posterior capsulolabral mobilization, preparation of a bleeding posterior glenoid bone bed, direct visualization for accurate tunnel placement, progressive independent button tensioning, and posterior capsulolabral reconstruction, leaving the graft extra\u2010articular.<\/jats:p>","DOI":"10.1002\/atn2.70137","type":"journal-article","created":{"date-parts":[[2026,5,26]],"date-time":"2026-05-26T04:12:17Z","timestamp":1779768737000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Arthroscopic Posterior Glenoid Bone Block Using an Adapted Anterior Glenoid Guide and Independent Cortical Button Fixation"],"prefix":"10.1002","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1767-1447","authenticated-orcid":false,"given":"Pablo","family":"Ca\u00f1ete San Pastor","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery and Traumatology Hospital de 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