PMID- 31375445 OWN - NLM STAT- MEDLINE DCOM- 20200128 LR - 20200128 IS - 1873-5800 (Electronic) IS - 0968-0160 (Linking) VI - 26 IP - 5 DP - 2019 Oct TI - The interrelationship between anterior cruciate ligament tibial footprint and anterolateral meniscal root insertions: Quantitative, morphological and positional analyses using three-dimensional computed tomography images. PG - 969-977 LID - S0968-0160(19)30160-7 [pii] LID - 10.1016/j.knee.2019.07.004 [doi] AB - BACKGROUND: The purpose of this study was to evaluate quantitative, morphological and positional differences between the anterior cruciate ligament (ACL) tibial footprint and anterolateral meniscal root (ALMR) insertion and investigate an intraoperative landmark to estimate their boundaries. METHODS: Thirty-three fixed human cadaveric knees were evaluated. After resecting the components, the anterior fiber (AF) and posterior fiber (PF) of ALMR, the tibial center of ACL bundles (anteromedial (AM) and posterolateral (PL) bundles) and ACL were marked. Insertion morphology was classified into three categories, and the distance and relative positional relationship between AF/PF insertions and the center of each attachment were measured on three-dimensional computed tomography images. RESULTS: There was no significant difference between the AF of AM and ACL (P = 0.16), but both were significantly shorter than the AF of PL (both P < 0.001). There was no significant difference between the PF of ACL and PL (P = 0.99), which were significantly shorter than PF of AM (both P < 0.001). Morphology of the ACL tibial insertion was classified as follows: triangular, 15 knees (45.5%); oval, 18 knees (54.5%); none, C-shape. Quantitative and positional analyses showed that the AF insertion was significantly closer to AM and ACL centers in the oval type than in the triangular type. Excluding two cases, the AF/PF insertion was located laterally to the ML center of the medial and lateral intercondylar tubercles. CONCLUSION: Proximity of ACL tibial footprint and ALMR varies by their footprint morphology. The medial and lateral intercondylar tubercles were useful landmarks for ALMR injury prevention. CI - Copyright (c) 2019 Elsevier B.V. All rights reserved. FAU - Tensho, Keiji AU - Tensho K AD - Department of Orthopedic Surgery, Shinshu University School of Medicine, Nagano, Japan. Electronic address: kten@shinshu-u.ac.jp. FAU - Iwaasa, Tomoya AU - Iwaasa T AD - Department of Orthopedic Surgery, Shinshu University School of Medicine, Nagano, Japan. FAU - Koyama, Suguru AU - Koyama S AD - Department of Orthopedic Surgery, Shinshu University School of Medicine, Nagano, Japan. FAU - Yoshida, Kazushige AU - Yoshida K AD - Department of Orthopedic Surgery, Shinshu University School of Medicine, Nagano, Japan. FAU - Shimodaira, Hiroki AU - Shimodaira H AD - Department of Orthopedic Surgery, Shinshu University School of Medicine, Nagano, Japan. FAU - Horiuchi, Hiroshi AU - Horiuchi H AD - Department of Orthopedic Surgery, Shinshu University School of Medicine, Nagano, Japan. FAU - Kato, Hiroyuki AU - Kato H AD - Department of Orthopedic Surgery, Shinshu University School of Medicine, Nagano, Japan. FAU - Saito, Naoto AU - Saito N AD - Department of Orthopedic Surgery, Shinshu University School of Medicine, Nagano, Japan. FAU - Fukushima, Nanae AU - Fukushima N AD - Department of Orthopedic Surgery, Shinshu University School of Medicine, Nagano, Japan. LA - eng PT - Journal Article DEP - 20190730 PL - Netherlands TA - Knee JT - The Knee JID - 9430798 SB - IM MH - Aged MH - Aged, 80 and over MH - Anterior Cruciate Ligament/*diagnostic imaging/surgery MH - Anterior Cruciate Ligament Reconstruction/methods MH - Cadaver MH - Female MH - Humans MH - Imaging, Three-Dimensional MH - Knee Joint/*diagnostic imaging/surgery MH - Male MH - Menisci, Tibial/*diagnostic imaging/surgery MH - Middle Aged MH - Tibia/*diagnostic imaging/surgery MH - Tomography, X-Ray Computed OTO - NOTNLM OT - Anterior cruciate ligament OT - Anterolateral meniscal root OT - Three-dimensional computed tomography OT - Tibial footprint EDAT- 2019/08/04 06:00 MHDA- 2020/01/29 06:00 CRDT- 2019/08/04 06:00 PHST- 2019/03/23 00:00 [received] PHST- 2019/06/18 00:00 [revised] PHST- 2019/07/03 00:00 [accepted] PHST- 2019/08/04 06:00 [pubmed] PHST- 2020/01/29 06:00 [medline] PHST- 2019/08/04 06:00 [entrez] AID - S0968-0160(19)30160-7 [pii] AID - 10.1016/j.knee.2019.07.004 [doi] PST - ppublish SO - Knee. 2019 Oct;26(5):969-977. doi: 10.1016/j.knee.2019.07.004. Epub 2019 Jul 30.