{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,11]],"date-time":"2026-07-11T09:58:30Z","timestamp":1783763910404,"version":"3.55.0"},"reference-count":21,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2011,9,20]],"date-time":"2011-09-20T00:00:00Z","timestamp":1316476800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2012,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The primary purpose of this study was to investigate the role the ligamentum teres has in providing hip stability using a biomechanical model. The second purpose was to review arthroscopic findings in those with a complete ligamentum teres rupture and question them regarding instability to determine how clinical findings related to the biomechanical model.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A string model was created to examine ligamentum teres excursion during various hip positions. A retrospective review of 350 consecutive surgical patients identified 20 subjects with a complete ligamentum teres rupture that was not repaired at the time of surgery.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The model found the ligamentum teres to have the greatest excursion when the hip was externally rotated in flexion (ER\/FLEX) and internally rotated in extension (IR\/EXT). During operative assessment, it was noted that all 20 subjects had laxity during dynamic impingement testing when their hip was in a position of ER\/FLEX. Nine (45%) of the 20 subjects with ligamentum teres rupture were available for follow\u2010up (mean 31\u00a0months post\u2010op). Five out of these 9 subjects noted instability: 5 of 9 with squatting (ER\/FLEX) and 4 of 9 with crossing one leg behind of the other (IR\/EXT). These 5 subjects had osseous risk factors that compromised hip stability including inferior acetabular insufficiency.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The ligamentum teres may contribute to hip stability when the hip is in ER\/FLEX and IR\/EXT. Individuals with osseous risk factors for instability, including inferior acetabular insufficiency, may have instability with squatting (ER\/FLEX) and crossing one leg behind of the other (IR\/EXT).<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>IV.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-011-1663-1","type":"journal-article","created":{"date-parts":[[2011,9,19]],"date-time":"2011-09-19T13:19:32Z","timestamp":1316438372000},"page":"1209-1214","source":"Crossref","is-referenced-by-count":89,"title":["Ligamentum teres: a functional description and potential clinical relevance"],"prefix":"10.1002","volume":"20","author":[{"given":"RobRoy L.","family":"Martin","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Physical Therapy Duquesne University 114 Rangos School of Health Sciences 15282 Pittsburgh PA USA"},{"name":"<!--<label>3<\/label>--> University of Pittsburgh Center for Sports Medicine Pittsburgh PA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ian","family":"Palmer","sequence":"additional","affiliation":[{"name":"<!--<label>2<\/label>--> Oklahoma Sports Science and Orthopaedics Oklahoma City OK USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hal D.","family":"Martin","sequence":"additional","affiliation":[{"name":"<!--<label>2<\/label>--> Oklahoma Sports Science and Orthopaedics Oklahoma City OK USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2011,9,20]]},"reference":[{"key":"e_1_2_7_2_2","doi-asserted-by":"publisher","DOI":"10.1302\/0301\u2010620X.81B4.8803"},{"key":"e_1_2_7_3_2","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.91B1.21421"},{"key":"e_1_2_7_4_2","doi-asserted-by":"publisher","DOI":"10.1302\/0301\u2010620X.82B3.10356"},{"key":"e_1_2_7_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2008.06.001"},{"key":"e_1_2_7_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.csm.2005.12.001"},{"key":"e_1_2_7_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0749\u20108063(05)80111\u20102"},{"key":"e_1_2_7_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0278\u20105919(05)70282\u20109"},{"key":"e_1_2_7_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2004.01.025"},{"key":"e_1_2_7_10_2","doi-asserted-by":"publisher","DOI":"10.1148\/rg.306105516"},{"key":"e_1_2_7_11_2","doi-asserted-by":"publisher","DOI":"10.1590\/S1413-78522007000400002"},{"key":"e_1_2_7_12_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2005.02.016"},{"key":"e_1_2_7_13_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-010-1318-7"},{"key":"e_1_2_7_14_2","doi-asserted-by":"publisher","DOI":"10.1302\/0301\u2010620X.89B8.19152"},{"key":"e_1_2_7_15_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2007.03.016"},{"key":"e_1_2_7_16_2","doi-asserted-by":"publisher","DOI":"10.1177\/03635465030310060701"},{"key":"e_1_2_7_17_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2007.11.007"},{"key":"e_1_2_7_18_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2007.08.024"},{"key":"e_1_2_7_19_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010007\u20100332\u2010x"},{"key":"e_1_2_7_20_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546507300258"},{"key":"e_1_2_7_21_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0278\u20105919(05)70285\u20104"},{"key":"e_1_2_7_22_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2010.09.016"}],"container-title":["Knee Surgery, Sports Traumatology, Arthroscopy"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/s00167-011-1663-1.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/article\/10.1007\/s00167-011-1663-1\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/esskajournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1007\/s00167-011-1663-1","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,19]],"date-time":"2025-10-19T13:25:25Z","timestamp":1760880325000},"score":1,"resource":{"primary":{"URL":"https:\/\/esskajournals.onlinelibrary.wiley.com\/doi\/10.1007\/s00167-011-1663-1"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2011,9,20]]},"references-count":21,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2012,6]]}},"alternative-id":["10.1007\/s00167-011-1663-1"],"URL":"https:\/\/doi.org\/10.1007\/s00167-011-1663-1","archive":["Portico"],"relation":{},"ISSN":["0942-2056","1433-7347"],"issn-type":[{"value":"0942-2056","type":"print"},{"value":"1433-7347","type":"electronic"}],"subject":[],"published":{"date-parts":[[2011,9,20]]}}}