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A prior case report described an open decompression of the anterior inferior iliac spine (AIIS) due to impingement against the proximal femur. AIIS impingement may be developmental or the result of a prior AIIS avulsion or pelvic osteotomy. We describe 3 representative cases with minimum 1\u2010year follow\u2010up treated with an arthroscopic AIIS decompression.<\/jats:p>","DOI":"10.1016\/j.arthro.2011.10.004","type":"journal-article","created":{"date-parts":[[2011,12,4]],"date-time":"2011-12-04T16:45:58Z","timestamp":1323017158000},"page":"1732-1737","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":208,"title":["Making a Case for Anterior Inferior Iliac Spine\/Subspine Hip Impingement: Three Representative Case Reports and Proposed Concept"],"prefix":"10.1002","volume":"27","author":[{"given":"Christopher M.","family":"Larson","sequence":"first","affiliation":[{"name":"Minnesota Orthopedic Sports Medicine Institute at Twin Cities Orthopedics Edina Minnesota"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bryan T.","family":"Kelly","sequence":"additional","affiliation":[{"name":"New York\u2010Presbyterian Hospital\/Weill Cornell Medical College and Hospital for Special Surgery New York New York U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rebecca M.","family":"Stone","sequence":"additional","affiliation":[{"name":"Minnesota Orthopedic Sports Medicine Institute at Twin Cities Orthopedics Edina Minnesota"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2011,12,1]]},"reference":[{"key":"e_1_2_2_2_1","doi-asserted-by":"publisher","DOI":"10.1097\/00003086-200401000-00012"},{"key":"e_1_2_2_3_1","first-page":"\u2010120","article-title":"Femoroacetabular impingement: A cause for osteoarthritis of the hip","volume":"112","author":"Ganz R.","year":"2003","journal-title":"Clin Orthop Relat 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