{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,19]],"date-time":"2026-10-19T19:46:42Z","timestamp":1792439202425,"version":"4.5.0"},"reference-count":35,"publisher":"SAGE Publications","issue":"5","license":[{"start":{"date-parts":[[2001,9,1]],"date-time":"2001-09-01T00:00:00Z","timestamp":999302400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Am J Sports Med"],"published-print":{"date-parts":[[2001,9]]},"abstract":"<jats:p>An open-configuration magnetic resonance imaging scanner was used to document patellar tracking abnormalities in 11 anterior cruciate ligament-injured knees. The contralateral normal knees were used as controls. Images were obtained with the quadriceps muscles at rest (knee flexion at 40\u00b0, 25\u00b0, and 10\u00b0) and with the quadriceps muscles contracted (knee flexion at 40\u00b0 and 25\u00b0). When the quadriceps muscles were at rest there were no differences in patellar alignment between the anterior cruciate ligament-injured knees and the contralateral normal knees. When the quadriceps muscles were maximally contracted at 40\u00b0 of flexion, the patellae of the anterior cruciate ligament-injured knees tilted laterally 3.6\u00b0 relative to the resting state. When the quadriceps muscles were contracted at 25\u00b0 of flexion, the patellae of the anterior cruciate ligament-injured knees tilted laterally approximately 4\u00b0 relative to the resting state. Quadriceps-active lateral patellar tilt at 25\u00b0 of flexion was greater in the anterior cruciate ligament-injured knees than in the contralateral normal knees, and it correlated with instrumented measurements of anterior tibial translation. Dynamic lateral patellar tilt during open kinetic chain exercises and during other activities that produce anterior tibial translation may contribute to extensor mechanism dysfunction in the anterior cruciate ligament-injured knee.<\/jats:p>","DOI":"10.1177\/03635465010290051201","type":"journal-article","created":{"date-parts":[[2017,7,19]],"date-time":"2017-07-19T05:36:49Z","timestamp":1500442609000},"page":"593-599","source":"Crossref","is-referenced-by-count":18,"title":["Dynamic Lateral Patellar Tilt in the Anterior Cruciate Ligament-Deficient Knee"],"prefix":"10.1177","volume":"29","author":[{"given":"Mark E.","family":"Steiner","sequence":"first","affiliation":[{"name":"New England Baptist Hospital Sports Medicine Program, Boston, Massachusetts"},{"name":"Harvard Medical School, Boston, Massachusetts"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seppo K.","family":"Koskinen","sequence":"additional","affiliation":[{"name":"Brigham and Women's Hospital, Boston, Massachusetts"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carl S.","family":"Winalski","sequence":"additional","affiliation":[{"name":"Harvard Medical School, Boston, Massachusetts"},{"name":"Brigham and Women's Hospital, Boston, Massachusetts"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Scott D.","family":"Martin","sequence":"additional","affiliation":[{"name":"Brigham and Women's Hospital, Boston, Massachusetts"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Haymen","sequence":"additional","affiliation":[{"name":"New England Baptist Hospital Sports Medicine Program, Boston, Massachusetts"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2001,9,1]]},"reference":[{"key":"bibr1-03635465010290051201","doi-asserted-by":"crossref","first-page":"40","DOI":"10.1097\/00003086-199303000-00006","volume":"288","author":"Andriacchi TP","year":"1993","journal-title":"Clin Orthop"},{"key":"bibr2-03635465010290051201","first-page":"745","volume":"15","author":"Bazos AN","year":"1991","journal-title":"Orthop Trans"},{"key":"bibr3-03635465010290051201","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(86)90837-8"},{"key":"bibr4-03635465010290051201","doi-asserted-by":"publisher","DOI":"10.1148\/radiology.187.1.8451415"},{"key":"bibr5-03635465010290051201","doi-asserted-by":"publisher","DOI":"10.1177\/036354659502300206"},{"key":"bibr6-03635465010290051201","doi-asserted-by":"publisher","DOI":"10.1177\/036354659502300405"},{"key":"bibr7-03635465010290051201","unstructured":"DanielDM, StoneML: Case studies in DanielDM, AkesonWH, O'ConnorJJ (eds): Knee Ligaments: Structure, Function, Injury, and Repair. 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