{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,12]],"date-time":"2026-07-12T06:17:44Z","timestamp":1783837064583,"version":"3.55.0"},"reference-count":26,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2012,5,24]],"date-time":"2012-05-24T00:00:00Z","timestamp":1337817600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100009026","name":"Smith and Nephew","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100009026","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2013,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The purpose of this study was to: (1) define the relationship between the ACL and PCL in normal knees; (2) determine whether ACL\u2013PCL impingement occurs in native knees; and (3) determine whether there is a difference in impingement between double\u2010bundle reconstructed and native knees.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Eight subjects were identified (age 20\u201350; 6 females, 2\u00a0males). All were at least 1\u2010year status postanatomic double\u2010bundle ACL reconstruction (allograft; AM = 8\u00a0mm; PL = 7\u00a0mm) and had no history of injury or surgery to the contralateral knee. MRIs of both knees were performed with the knee at 0 and 30\u00b0 of flexion. The images were evaluated by a non\u2010treating surgeon and two musculoskeletal radiologists. Coronal and sagittal angles of AM and PL bundles, Liu\u2019s PCL index and the distance between ACL and PCL on modified axial oblique images were recorded. Impingement was graded (1) no contact; (2) contact without deformation; or (3) contact and distortion of PCL contour.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Seventy\u2010five percent (6) of the native ACL\u2019s showed no contact with the roof of the intercondylar notch or PCL, compared to 25 % (2) of the double\u2010bundle reconstructed ACLs. One double\u2010bundle reconstructed ACL showed intercondylar notch roof and ACL\u2013PCL impingement (12.5 %). Significant differences were found between the native ACL and the double\u2010bundle reconstructed ACL for the coronal angle of the AM (79\u00b0 vs. 72\u00b0, <jats:italic>p<\/jats:italic> = 0.002) and PL bundle (75\u00b0 vs. 58\u00b0, <jats:italic>p<\/jats:italic> = 0.001). No differences in ROM or stability were noted at any follow\u2010up interval between groups based on MRI impingement grade.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>ACL\u2013PCL contact occurred in 25 % of native knees. Contact between the ACL graft and PCL occurred in 75 % of double\u2010bundle reconstructed knees. ACL\u2013PCL impingement, both contact and distortion of the PCL, occurred in one knee after double\u2010bundle reconstruction. This study offers perspective on what can be considered normal contact between the ACL and PCL and how impingement after ACL reconstruction can be detected on MRI.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>Cohort Study, Level III.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-012-2052-0","type":"journal-article","created":{"date-parts":[[2012,5,23]],"date-time":"2012-05-23T10:10:33Z","timestamp":1337767833000},"page":"720-725","source":"Crossref","is-referenced-by-count":16,"title":["ACL\u2013PCL and intercondylar notch impingement: magnetic resonance imaging of native and double\u2010bundle ACL\u2010reconstructed knees"],"prefix":"10.1002","volume":"21","author":[{"given":"Eric J.","family":"Kropf","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery University of Pittsburgh Kaufman Building Suite 1011, 3471 Fifth Avenue 15213 Pittsburgh PA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Shen","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery University of Pittsburgh Kaufman Building Suite 1011, 3471 Fifth Avenue 15213 Pittsburgh PA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carola F.","family":"van Eck","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery University of Pittsburgh Kaufman Building Suite 1011, 3471 Fifth Avenue 15213 Pittsburgh PA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Volker","family":"Musahl","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery University of Pittsburgh Kaufman Building Suite 1011, 3471 Fifth Avenue 15213 Pittsburgh PA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James J.","family":"Irrgang","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery University of Pittsburgh Kaufman Building Suite 1011, 3471 Fifth Avenue 15213 Pittsburgh PA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Freddie H.","family":"Fu","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopaedic Surgery University of Pittsburgh Kaufman Building Suite 1011, 3471 Fifth Avenue 15213 Pittsburgh PA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2012,5,24]]},"reference":[{"key":"e_1_2_7_2_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010011\u20101426\u2010z"},{"key":"e_1_2_7_3_2","doi-asserted-by":"publisher","DOI":"10.1002\/jor.1100080408"},{"key":"e_1_2_7_4_2","doi-asserted-by":"publisher","DOI":"10.2214\/AJR.08.1185"},{"key":"e_1_2_7_5_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546510367424"},{"key":"e_1_2_7_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.mri.2004.08.007"},{"key":"e_1_2_7_7_2","doi-asserted-by":"publisher","DOI":"10.1177\/036354659302100415"},{"key":"e_1_2_7_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/0749\u20108063(92)90073\u2010K"},{"key":"e_1_2_7_9_2","doi-asserted-by":"publisher","DOI":"10.1148\/radiology.179.3.2027966"},{"key":"e_1_2_7_10_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010010\u20101331\u2010x"},{"key":"e_1_2_7_11_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010011\u20101504\u20102"},{"key":"e_1_2_7_12_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546510363461"},{"key":"e_1_2_7_13_2","doi-asserted-by":"publisher","DOI":"10.1007\/s001670050004"},{"key":"e_1_2_7_14_2","doi-asserted-by":"publisher","DOI":"10.1177\/03635465000280012001"},{"key":"e_1_2_7_15_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546510377399"},{"key":"e_1_2_7_16_2","doi-asserted-by":"publisher","DOI":"10.1177\/0363546510395477"},{"key":"e_1_2_7_17_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.mri.2006.10.002"},{"key":"e_1_2_7_18_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.H.00919"},{"key":"e_1_2_7_19_2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-200306000-00006"},{"key":"e_1_2_7_20_2","doi-asserted-by":"publisher","DOI":"10.1053\/jars.2001.21821"},{"key":"e_1_2_7_21_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2009.07.027"},{"key":"e_1_2_7_22_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010010\u20101135\u2010z"},{"key":"e_1_2_7_23_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010010\u20101191\u20104"},{"key":"e_1_2_7_24_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2010.03.005"},{"key":"e_1_2_7_25_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00167\u2010010\u20101243\u20109"},{"key":"e_1_2_7_26_2","doi-asserted-by":"publisher","DOI":"10.1177\/036354658701500506"},{"key":"e_1_2_7_27_2","doi-asserted-by":"publisher","DOI":"10.1097\/00003086-200201000-00018"}],"container-title":["Knee 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