{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T09:14:03Z","timestamp":1790068443717,"version":"4.0.1"},"reference-count":44,"publisher":"SAGE Publications","issue":"12","license":[{"start":{"date-parts":[[2022,12,1]],"date-time":"2022-12-01T00:00:00Z","timestamp":1669852800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Orthopaedic Journal of Sports Medicine"],"published-print":{"date-parts":[[2022,12,1]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>A serious concern with surgical procedures around the hip joint is iatrogenic injury of the arterial supply to the femoral head (FH) and consequent development of FH osteonecrosis. Cam-type morphology can extend to the posterosuperior area. Understanding the limit of the posterior superior extension of the femoral osteochondroplasty is paramount to avoid underresection and residual impingement while maintaining FH vascularity.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Purpose\/Hypothesis:<\/jats:title>\n                    <jats:p>The aim of this study was to quantify the impact of arthroscopic femoral osteochondroplasty on the FH vascular supply. It was hypothesized that keeping the superior extension of the resection zone anterior to the 12-o\u2019clock position would maintain FH vascularity.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Study Design:<\/jats:title>\n                    <jats:p>Case series; Level of evidence, 4.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>Ten adult patients undergoing arthroscopic femoroacetabular impingement (FAI) surgery were included in the study. Computed tomography (CT) scans were obtained before and after arthroscopic osteochondroplasty to define the extension of resection margins. To quantify FH vascularity, postoperative dynamic contrast\u2013enhanced magnetic resonance imaging (DCE-MRI) was obtained at 2 time points: immediately after surgery and at the 3-month follow-up. Custom MRI analysis software was used to quantify perfusion.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>CT scan analysis demonstrated that the superior resection margin was maintained anterior to the 12-o\u2019clock position in half of the patients. The remining 5 patients had a mean posterior extension of 11.4\u00b0 \u00b1 7.5\u00b0. The immediate postoperative DCE-MRI revealed diminished venous outflow in the operative side but no difference in overall FH perfusion. At the 3-month follow-up DCE-MRI, there was no perfusion difference between the operative and nonoperative FHs.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>This study provides previously unreported quantitative MRI data on in vivo perfusion of the FH after the commonly performed arthroscopic femoral osteochondroplasty for the treatment of cam-type FAI. Maintaining resection margins anterior to the 12-o\u2019clock position, or even 10\u00b0 posteriorly, was not observed to impair perfusion to the FH.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/23259671221139355","type":"journal-article","created":{"date-parts":[[2022,12,21]],"date-time":"2022-12-21T14:29:38Z","timestamp":1671632978000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Femoral Head Vascularity After Arthroscopic Femoral Osteochondroplasty: An In Vivo Dynamic Contrast\u2013Enhanced MRI Study"],"prefix":"10.1177","volume":"10","author":[{"given":"Lionel E.","family":"Lazaro","sequence":"first","affiliation":[{"name":"Doctors\u2019 Center Hospital, San Juan and Dorado, Puerto Rico."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jonathan P.","family":"Dyke","sequence":"additional","affiliation":[{"name":"Citigroup Biomedical Imaging Center, Weill Cornell Medicine, New York, New York, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adam","family":"Cady","sequence":"additional","affiliation":[{"name":"Cedar-Sinai Kerlan-Jobe Institute, Los Angeles, California, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael B.","family":"Banffy","sequence":"additional","affiliation":[{"name":"Cedar-Sinai Kerlan-Jobe Institute, Los Angeles, California, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2022,12,21]]},"reference":[{"key":"bibr1-23259671221139355","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2010.06.031"},{"key":"bibr2-23259671221139355","doi-asserted-by":"publisher","DOI":"10.1177\/0363546512441328"},{"issue":"4","key":"bibr3-23259671221139355","first-page":"85","volume":"88","author":"Beaul\u00e9 PE","year":"2006","journal-title":"J Bone Joint Surg 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