{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T16:39:12Z","timestamp":1786984752170,"version":"build-2736575974"},"reference-count":24,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2010,10,1]],"date-time":"2010-10-01T00:00:00Z","timestamp":1285891200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2010,10,1]],"date-time":"2010-10-01T00:00:00Z","timestamp":1285891200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"},{"start":{"date-parts":[[2010,10,1]],"date-time":"2010-10-01T00:00:00Z","timestamp":1285891200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2010,10,1]],"date-time":"2010-10-01T00:00:00Z","timestamp":1285891200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"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":["arthroscopyjournal.org","clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Arthroscopy"],"published-print":{"date-parts":[[2010,10]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To investigate the effects of anterior cruciate ligament (ACL) deficiency and nonanatomic single\u2010bundle (SB) and anatomic double\u2010bundle (DB) ACL reconstruction on the contact characteristics of the patellofemoral (PF) joint.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>By use of a materials testing system, 7 fresh\u2010frozen human cadaveric knees were tested. The following states were tested: ACL\u2010intact knee, nonanatomic SB ACL reconstruction, anatomic DB ACL reconstruction, and ACL\u2010deficient knee. Hamstring autografts were used. PF contact pressures and areas were measured with pressure\u2010sensitive film at 30\u00b0, 60\u00b0, and 90\u00b0 of knee flexion with a constant 100\u2010N load on the quadriceps tendon.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The total contact area of ACL\u2010deficient and nonanatomic SB ACL\u2010reconstructed knees (123.8 \u00b1 63.9 and 149.6 \u00b1 79.3 mm\n                      <jats:sup>2<\/jats:sup>\n                      , respectively) significantly decreased when compared with those of the intact knee (206.1 \u00b1 83.6 mm\n                      <jats:sup>2<\/jats:sup>\n                      ) at 30\u00b0 of knee flexion. The lateral\u2010facet peak pressure of ACL\u2010deficient and nonanatomic SB ACL\u2010reconstructed knees (1.12 \u00b1 0.52 and 1.22 \u00b1 0.54 MPa, respectively) significantly decreased when compared with those of the intact knee (0.68 \u00b1 0.38 MPa) at 90\u00b0 of knee flexion. Anatomic DB ACL reconstruction restored the contact pressures and areas to values similar to those of the intact knee (no significant difference).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>ACL deficiency resulted in a significant decrease in the total and medial PF contact areas and in an increase in the lateral PF contact pressure. Anatomic DB ACL reconstruction more closely restored normal PF contact area and pressure than did nonanatomic SB ACL reconstruction.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Clinical Relevance<\/jats:title>\n                    <jats:p>Our findings suggest that the changes in the PF contact area and pressures in ACL deficiency and after nonanatomic SB ACL reconstruction may be one of the causes of PF osteoarthritis or other related PF problems found at long\u2010term follow\u2010up. Anatomic DB ACL reconstruction may reduce the incidence of PF problems by closely restoring the contact area and pressure.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1016\/j.arthro.2010.01.034","type":"journal-article","created":{"date-parts":[[2010,9,30]],"date-time":"2010-09-30T05:26:45Z","timestamp":1285824405000},"page":"1302-1310","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":43,"title":["Anatomic Double\u2010Bundle Anterior Cruciate Ligament Reconstruction Restores Patellofemoral Contact Areas and Pressures More Closely Than Nonanatomic Single\u2010Bundle Reconstruction"],"prefix":"10.1002","volume":"26","author":[{"given":"Goro","family":"Tajima","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery University of Pittsburgh Pittsburgh Pennsylvania U.S.A."},{"name":"Department of Orthopaedic Surgery Iwate Medical University Morioka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takanori","family":"Iriuchishima","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery University of Pittsburgh Pittsburgh Pennsylvania U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sheila J.M.","family":"Ingham","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery University of Pittsburgh Pittsburgh Pennsylvania U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Shen","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery University of Pittsburgh Pittsburgh Pennsylvania U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Albert H.","family":"van Houten","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery University of Pittsburgh Pittsburgh Pennsylvania U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maarten M.","family":"Aerts","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery University of Pittsburgh Pittsburgh Pennsylvania U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tadashi","family":"Shimamura","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Iwate Medical University Morioka Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Patrick","family":"Smolinski","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery University of Pittsburgh Pittsburgh Pennsylvania U.S.A."},{"name":"Department of Mechanical Engineering University of Pittsburgh Pittsburgh Pennsylvania U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Freddie H.","family":"Fu","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery University of Pittsburgh Pittsburgh 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Published by Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}]}}