caa a22 4500 605458235 CHVBK 20210128100227.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s00167-015-3776-4 doi (NATIONALLICENCE)springer-10.1007/s00167-015-3776-4 Quantitative comparison of the pivot shift test results before and after anterior cruciate ligament reconstruction by using the three-dimensional electromagnetic measurement system [Elektronische Daten] [Kanto Nagai, Yuichi Hoshino, Yuichiro Nishizawa, Daisuke Araki, Takehiko Matsushita, Tomoyuki Matsumoto, Koji Takayama, Kouki Nagamune, Masahiro Kurosaka, Ryosuke Kuroda] Purpose: Tibial acceleration during the pivot shift test is a potential quantitative parameter to evaluate rotational laxity of anterior cruciate ligament (ACL) insufficiency. However, clinical application of this measurement has not been fully examined. This study aimed to measure and compare tibial acceleration before and after ACL reconstruction (ACLR) in ACL-injured patients. We hypothesized tibial acceleration would be reduced by ACLR and tibial acceleration would be consistent in the same knee at different time points. Methods: Seventy ACL-injured patients who underwent ACLR were enrolled. Tibial acceleration during the pivot shift test was measured using an electromagnetic measurement system before ALCR and at the second-look arthroscopy 1year post-operatively. Tibial acceleration was compared to clinical grading and between ACL-injured/ACL-reconstructed and contralateral knees. Results: Pre-operative tibial acceleration was increased stepwise with the increase in clinical grading (P<0.01). Tibial acceleration in ACL-injured knee (1.9±1.2m/s2) was larger than that in the contralateral knee (0.8±0.3m/s2, P<0.01), and reduced to 0.9±0.3m/s2 post-operatively (P<0.01). There was no difference between ACL-reconstructed and contralateral knee (n.s.). Tibial acceleration in contralateral knees was consistent pre- and post-operatively (n.s.). Conclusion: Tibial acceleration measurement demonstrated increased rotational laxity in ACL-injured knees and its reduction by ALCR. Additionally, consistent measurements were obtained in ACL-intact knees at different time points. Therefore, tibial acceleration during the pivot shift test could provide quantitative evaluation of rotational stability before and after ACL reconstruction. Level of evidence: III. European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA), 2015 Rotational instability nationallicence Pivot shift test nationallicence Electromagnetic measurement system nationallicence Acceleration nationallicence Anterior cruciate ligament injury nationallicence ACL reconstruction nationallicence Nagai Kanto Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut Hoshino Yuichi Department of Orthopaedic Surgery, Kobe Kaisei Hospital, Kobe, Japan aut Nishizawa Yuichiro Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut Araki Daisuke Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut Matsushita Takehiko Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut Matsumoto Tomoyuki Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut Takayama Koji Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut Nagamune Kouki Department of Human and Artificial Intelligent Systems, Graduate School of Engineering, University of Fukui, Fukui, Japan aut Kurosaka Masahiro Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut Kuroda Ryosuke Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/10(2015-10-01), 2876-2881 0942-2056 23:10<2876 2015 23 167 https://doi.org/10.1007/s00167-015-3776-4 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/s00167-015-3776-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nagai Kanto Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut NATIONALLICENCE 700 1- Hoshino Yuichi Department of Orthopaedic Surgery, Kobe Kaisei Hospital, Kobe, Japan aut NATIONALLICENCE 700 1- Nishizawa Yuichiro Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut NATIONALLICENCE 700 1- Araki Daisuke Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut NATIONALLICENCE 700 1- Matsushita Takehiko Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut NATIONALLICENCE 700 1- Matsumoto Tomoyuki Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut NATIONALLICENCE 700 1- Takayama Koji Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut NATIONALLICENCE 700 1- Nagamune Kouki Department of Human and Artificial Intelligent Systems, Graduate School of Engineering, University of Fukui, Fukui, Japan aut NATIONALLICENCE 700 1- Kurosaka Masahiro Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut NATIONALLICENCE 700 1- Kuroda Ryosuke Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, 650-0017, Kobe, Japan aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/10(2015-10-01), 2876-2881 0942-2056 23:10<2876 2015 23 167