{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T19:11:04Z","timestamp":1783969864046,"version":"3.55.0"},"reference-count":50,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2021,4,30]],"date-time":"2021-04-30T00:00:00Z","timestamp":1619740800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100000925","name":"National Health and Medical Research Council","doi-asserted-by":"publisher","award":["APP1121173"],"award-info":[{"award-number":["APP1121173"]}],"id":[{"id":"10.13039\/501100000925","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal Orthopaedic Research"],"published-print":{"date-parts":[[2022,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Altered biomechanics are frequently observed following anterior cruciate ligament reconstruction (ACLR). Yet, little is known about knee\u2010joint loading, particularly in the patellofemoral\u2010joint, despite patellofemoral\u2010joint osteoarthritis commonly occurring post\u2010ACLR. This study compared knee\u2010joint reaction forces and impulses during the landing phase of a single\u2010leg forward hop in the reconstructed knee of people 12\u201024 months post\u2010ACLR and uninjured controls. Experimental marker data and ground forces for 66 participants with ACLR (28\u2009\u00b1\u20096 years, 78\u2009\u00b1\u200915\u2009kg) and 33 uninjured controls (26\u2009\u00b1\u20095 years, 70\u2009\u00b1\u200912\u2009kg) were input into scaled\u2010generic musculoskeletal models to calculate joint angles, joint moments, muscle forces, and the knee\u2010joint reaction forces and impulses. The ACLR group exhibited a lower peak knee flexion angle (mean difference: \u22126\u00b0; 95% confidence interval: [\u221210\u00b0, \u22122\u00b0]), internal knee extension moment (\u22123.63 [\u22125.29, \u22121.97] percentage of body weight\u2009\u00d7\u2009participant height (body weight [BW]\u2009\u00d7\u2009HT), external knee adduction moment (\u20101.36 [\u22122.16, \u22120.56]% BW\u2009\u00d7\u2009HT) and quadriceps force (\u22122.02 [\u22122.95, \u22121.09] BW). The ACLR group also exhibited a lower peak patellofemoral\u2010joint compressive force (\u22122.24 [\u22123.31, \u22121.18] BW), net tibiofemoral\u2010joint compressive force (\u22120.74 [\u22121.20, 0.28] BW), and medial compartment force (\u22120.76 [\u22121.08, \u22120.44] BW). Finally, only the impulse of the patellofemoral\u2010joint compressive force was lower in the ACLR group (\u22120.13 [\u22120.23, \u22120.03] body weight\u2010seconds). Lower compressive forces are evident in the patellofemoral\u2010 and tibiofemoral\u2010joints of ACLR knees compared to uninjured controls during a single\u2010leg forward hop\u2010landing task. Our findings may have implications for understanding the contributing factors for incidence and progression of knee osteoarthritis after ACLR surgery.<\/jats:p>","DOI":"10.1002\/jor.25053","type":"journal-article","created":{"date-parts":[[2021,4,19]],"date-time":"2021-04-19T16:53:38Z","timestamp":1618851218000},"page":"159-169","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["Patellofemoral and tibiofemoral joint loading during a single\u2010leg forward hop following ACL reconstruction"],"prefix":"10.1002","volume":"40","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9543-4108","authenticated-orcid":false,"given":"Prasanna","family":"Sritharan","sequence":"first","affiliation":[{"name":"La Trobe Sports &amp; Exercise Medicine Research Centre La Trobe University  Melbourne Victoria Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anthony G.","family":"Schache","sequence":"additional","affiliation":[{"name":"La Trobe Sports &amp; Exercise Medicine Research Centre La Trobe University  Melbourne Victoria Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adam G.","family":"Culvenor","sequence":"additional","affiliation":[{"name":"La Trobe Sports &amp; Exercise Medicine Research Centre La Trobe University  Melbourne Victoria Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luke G.","family":"Perraton","sequence":"additional","affiliation":[{"name":"Department of Physiotherapy Monash University  Melbourne Victoria Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adam L.","family":"Bryant","sequence":"additional","affiliation":[{"name":"Centre for Health, Exercise &amp; Sports Medicine University of Melbourne  Melbourne Victoria Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hayden 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Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,4,30]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546515626539"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1136\/bjsports-2012-091490"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546507307396"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.H.01408"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/acr.22313"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.joca.2016.05.010"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546515608475"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1136\/bjsports-2015-094797"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.clinbiomech.2017.02.004"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546520914628"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1002\/jor.22176"},{"key":"e_1_2_7_13_1","first-page":"1","article-title":"Muscular 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