{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,18]],"date-time":"2026-05-18T16:19:49Z","timestamp":1779121189330,"version":"3.51.4"},"reference-count":21,"publisher":"Oxford University Press (OUP)","issue":"2","license":[{"start":{"date-parts":[[2023,3,22]],"date-time":"2023-03-22T00:00:00Z","timestamp":1679443200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,10,26]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:p>Arthroscopy and endoscopic hip surgery have attracted increasing attention in the orthopedic field. In the case of arthroscopy, portals and their relationships with neurovascular bundle structures at risk are well established. However, studies on endoscopic portals used for the repair of hamstring tendon injuries are insufficient. Hamstring injuries are the most common muscle injury in sports medicine, and up to 12% can present as a tendon rupture. Endoscopic surgery is advantageous because it has a lower rate of bleeding and avoids excessive handling of the gluteal muscles. The objective of this study is to perform an anatomical evaluation of endoscopic portals for hamstring repair and measure their distance to neurovascular structures\u2014mainly sciatic nerve and posterior femoral cutaneous nerve (PFCN). Fifteen hips from frozen and formalized cadavers were evaluated. Specimens that showed any modification in their anatomy were excluded. Portals were simulated using Steinmann pins, and anatomical dissection was performed. Distances from neurovascular structures were measured using a digital caliper. Four male cadaver hips (26%) and eleven female cadaver hips (74%) were included. Two dissected hips presented PFCN injury through the posterolateral portal\u2014 mean 20.28 mm (\u00b18.14), and one through the distal accessory portal\u2014 21.87 mm (\u00b112.03). The injury rate for PFCN was 3\/15 or 20%. None of the portals presented sciatic nerve injury. Conclusion: There is an imminent risk of nerve injury to the PFCN by performing the lateral portals for hamstring repair. To avoid this, we recommend starting the procedure through the most medial (posteromedial) portal, and the other portals must be performed under direct visualization.<\/jats:p>","DOI":"10.1093\/jhps\/hnad001","type":"journal-article","created":{"date-parts":[[2023,3,22]],"date-time":"2023-03-22T17:59:15Z","timestamp":1679507955000},"page":"75-79","source":"Crossref","is-referenced-by-count":4,"title":["Proximal endoscopic repair of the hamstring tendons: a cadaveric anatomical study of posterior hip portals"],"prefix":"10.1093","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6503-5963","authenticated-orcid":false,"given":"Lucas Verissimo","family":"Ranzoni","sequence":"first","affiliation":[{"name":"Department of Pathophysiology, Faculty of Medicine, USP , Av. Dr. Arnaldo, 455 - Cerqueira C\u00e9sar, S\u00e3o Paulo, SP 01246-903, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Matheus Almeida","family":"Guberovich","sequence":"additional","affiliation":[{"name":"Department of Pathophysiology, Faculty of Medicine, USP , Av. Dr. Arnaldo, 455 - Cerqueira C\u00e9sar, S\u00e3o Paulo, SP 01246-903, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leandro","family":"Ejnisman","sequence":"additional","affiliation":[{"name":"Orthopedics Department, Hospital Israelita Albert Einstein , Dr. Ov\u00eddio Pires de Campos Street, 333, Cerqueira Cesar, S\u00e3o Paulo, SP 05403-010, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Helder Souza","family":"Miyahara","sequence":"additional","affiliation":[{"name":"Orthopedics Department, Hospital das Cl\u00ednicas\u2014FMUSP , Dr. Ov\u00eddio Pires de Campos Street, 333, Cerqueira Cesar, S\u00e3o Paulo, SP 05403-010 Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6786-0991","authenticated-orcid":false,"given":"Ehud","family":"Rath","sequence":"additional","affiliation":[{"name":"Orthopedics Department, Tel Aviv University School of Medicine , Tel Aviv-Yafo 6997801, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Henrique Melo de Campos","family":"Gurgel","sequence":"additional","affiliation":[{"name":"Orthopedics Department, Hospital das Cl\u00ednicas\u2014FMUSP , Dr. Ov\u00eddio Pires de Campos Street, 333, Cerqueira Cesar, S\u00e3o Paulo, SP 05403-010 Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alfredo Luiz","family":"Jacomo","sequence":"additional","affiliation":[{"name":"Department of Surgery, Faculty of Medicine, USP , Av. 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