caa a22 4500 605457409 CHVBK 20210128100223.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s00167-014-3252-6 doi (NATIONALLICENCE)springer-10.1007/s00167-014-3252-6 Morphological changes in femoral tunnels after anatomic anterior cruciate ligament reconstruction [Elektronische Daten] [Yuta Tachibana, Tatsuo Mae, Konsei Shino, Takashi Kanamoto, Kazuomi Sugamoto, Hideki Yoshikawa, Ken Nakata] Purpose: Few studies investigated the enlargement inside the tunnel as well as the morphological change at the aperture after anterior cruciate ligament (ACL) reconstruction, whereas the tunnel enlargement has been well documented. The purposes were to evaluate the change in the cross-sectional area along the femoral tunnel and to morphologically clarify the enlargement at the femoral tunnel aperture after anatomic triple-bundle (ATB) ACL reconstruction. Methods: The study included 15 patients with unilateral ACL rupture. ATB ACL reconstruction was performed using semitendinosus tendon autografts. Three-dimensional computer models of the femur and bone tunnels were reconstructed from computed tomography images obtained 3weeks and 1year postoperatively. The cross-sectional area at the aperture as well as inside the tunnel was compared between the two periods. Likewise, the location of tunnel walls and center in the tunnel footprint were evaluated. Results: The cross-sectional area enlarged by 22.7% for anteromedial/intermediate graft (P=0.002) and 28.6% for posterolateral graft (P=0.002) at the aperture, while decreased by 36.2% at 10mm from the aperture for anteromedial/intermediate graft (P=0.004). Both the anterior and posterior walls shifted anteriorly, while the distal wall shifted distally in both tunnels. Consequently, the center in the footprint significantly shifted anteriorly (4.9-6.6%) and distally (2.2-2.6%) in both tunnels. Conclusions: The femoral tunnel enlargement occurred at the aperture after ATB ACL reconstruction, but did not occur in the middle of the femoral tunnel. The morphology at the aperture changed with time after surgery as the tunnel walls translated anteriorly and distally. Level of evidence: Case series, Level IV. European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA), 2014 ACL nationallicence Anatomic nationallicence Tunnel enlargement nationallicence Cross-sectional area nationallicence Graft nationallicence Tunnel morphology nationallicence Knee nationallicence Tachibana Yuta Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, 565-0871, Osaka, Japan aut Mae Tatsuo Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, 565-0871, Osaka, Japan aut Shino Konsei Sports Orthopaedic Surgery Center, Yukioka Hospital, 2-2-3 Ukita, Kita-ku, 530-0021, Osaka, Osaka, Japan aut Kanamoto Takashi Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, 565-0871, Osaka, Japan aut Sugamoto Kazuomi Department of Orthopaedic Biomaterial Science, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, 565-0871, Osaka, Japan aut Yoshikawa Hideki Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, 565-0871, Osaka, Japan aut Nakata Ken Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, 565-0871, Osaka, Japan aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/12(2015-12-01), 3591-3600 0942-2056 23:12<3591 2015 23 167 https://doi.org/10.1007/s00167-014-3252-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00167-014-3252-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tachibana Yuta Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, 565-0871, Osaka, Japan aut NATIONALLICENCE 700 1- Mae Tatsuo Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, 565-0871, Osaka, Japan aut NATIONALLICENCE 700 1- Shino Konsei Sports Orthopaedic Surgery Center, Yukioka Hospital, 2-2-3 Ukita, Kita-ku, 530-0021, Osaka, Osaka, Japan aut NATIONALLICENCE 700 1- Kanamoto Takashi Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, 565-0871, Osaka, Japan aut NATIONALLICENCE 700 1- Sugamoto Kazuomi Department of Orthopaedic Biomaterial Science, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, 565-0871, Osaka, Japan aut NATIONALLICENCE 700 1- Yoshikawa Hideki Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, 565-0871, Osaka, Japan aut NATIONALLICENCE 700 1- Nakata Ken Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, 565-0871, Osaka, Japan aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/12(2015-12-01), 3591-3600 0942-2056 23:12<3591 2015 23 167