{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,16]],"date-time":"2026-01-16T07:39:18Z","timestamp":1768549158103,"version":"3.49.0"},"reference-count":37,"publisher":"Wiley","issue":"S1","license":[{"start":{"date-parts":[[2011,4,6]],"date-time":"2011-04-06T00:00:00Z","timestamp":1302048000000},"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":[[2011,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The purpose of this study was to reveal the relationship between anatomically placed anterior cruciate ligament (ACL) graft and the intercondylar roof using magnetic resonance imaging (MRI).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Twenty patients undergoing anatomical double\u2010bundle ACL reconstruction were included in this study. Anatomical double\u2010bundle ACL reconstruction was performed with two femoral tunnels (antero\u2010medial; AM and postero\u2010lateral; PL) and two tibial tunnels. Hamstring autograft was used in all cases. More than 6\u00a0months after operation, MRI was performed with full knee extension. The relationship between the graft and the intercondylar roof was evaluated using an axial view of the T2 image at the most distal slice of the intercondylar roof. Qualitative evaluation of the ACL graft was performed with a sagittal view of the T2 image. Tunnel placement was evaluated with three\u2010dimensional computed tomography (3D\u2010CT) and radiographs. The extension angle of the knee was also evaluated with 3D\u2010CT.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>In 12 subjects, the ACL graft touched the roof (Touch group) but no graft deformation was observed. In 8 subjects, no roof\u2013graft contact was observed (Non\u2010touch group). In 1 case, the ACL graft was bowed posteriorly. Signal intensity alteration of the graft was observed in 3 cases. No significant difference in femoral and tibial tunnel placement was observed between the Touch and Non\u2010touch groups. All subjects attained full knee extension.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Although graft\u2013roof impingement after anatomical double\u2010bundle ACL reconstruction was suspected in some cases after the MRI evaluation, no extension loss in the knee was observed. In these suspected cases of impingement, long\u2010term follow\u2010up will be needed to determine the connection between any potential pathological effects. For the clinical relevance, MRI is an effective tool to determine the status of roof impingement in anatomical double\u2010bundle ACL reconstruction.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>Case controlled study, Level III.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-011-1504-2","type":"journal-article","created":{"date-parts":[[2011,4,5]],"date-time":"2011-04-05T14:46:14Z","timestamp":1302014774000},"page":"22-28","source":"Crossref","is-referenced-by-count":14,"title":["Full knee extension magnetic resonance imaging for the evaluation of intercondylar roof impingement after anatomical double\u2010bundle anterior cruciate ligament reconstruction"],"prefix":"10.1002","volume":"19","author":[{"given":"Takanori","family":"Iriuchishima","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Division of Rehabilitation Medicine Gunma University Hospital Showa\u2010machi 3\u201039\u201015 Maebashi Gunma 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H.","family":"Fu","sequence":"additional","affiliation":[{"name":"<!--<label>4<\/label>--> Department of Orthopaedic Surgery University of Pittsburgh Pittsburgh PA USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2011,4,6]]},"reference":[{"key":"e_1_2_8_2_2","doi-asserted-by":"publisher","DOI":"10.1148\/rg.297095036"},{"key":"e_1_2_8_3_2","first-page":"14","article-title":"Femoral insertion of the ACL: radiographic quadrant method","volume":"10","author":"Bernard M","year":"1997","journal-title":"Am J Knee 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