caa a22 4500 605460566 CHVBK 20210128100239.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s00167-014-3162-7 doi (NATIONALLICENCE)springer-10.1007/s00167-014-3162-7 Posterior tibial displacement in the PCL-deficient knee is reduced compared to the normal knee during gait [Elektronische Daten] [Naoya Orita, Masataka Deie, Noboru Shimada, Daisuke Iwaki, Makoto Asaeda, Kazuhiko Hirata, Mitsuo Ochi] Purpose: Most individuals with an isolated posterior cruciate ligament (PCL) injury do not complain of disability even if posterior instability is objectively revealed by a static physical examination, such as the posterior drawer test. This suggests it is insufficient to only evaluate posterior instability under static conditions. Therefore, we have investigated the effect of isolated PCL injury on the detailed kinematics of the knee in a dynamic environment such as during gait. Methods: Eight unilateral PCL-deficient males and eight healthy control volunteers participated in this study. Isolated PCL injury was diagnosed by clinical examination. Stress X-ray imaging showed an average side-to-side difference of 12.7±3.5mm. Knee kinematics including anteroposterior tibial displacement were analysed during walking using the point cluster technique. Results: Posterior tibial displacement from initial contact was significantly smaller during 9-22% of the gait cycle by an average of 0.4cm in the PCL group, compared to controls. In the PCL-deficient knee, the external rotational angle increased by an average of 3.3° at the loading response during 3-11% of the gait cycle and the varus angle from initial contact increased by an average of 2.0° during 28-52% of the gait cycle, compared to controls. Conclusions: Dynamic changes in the rotation and posterior translation patterns were seen after isolated PCL injury, suggesting the kinematics of PCL-deficient knees might be different to normal knees. These factors may contribute to long-term osteoarthritic change. Consequently, when choosing conservative treatment for PCL injury, these changes should be considered to prevent osteoarthritic change. Level of evidence: III. Springer-Verlag Berlin Heidelberg, 2014 Isolated posterior cruciate ligament injury nationallicence Point cluster technique nationallicence Gait analysis nationallicence Dynamic condition nationallicence Posterior tibial displacement nationallicence Orita Naoya Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi Minami-ku, 734-8551, Hiroshima, Japan aut Deie Masataka Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi Minami-ku, 734-8551, Hiroshima, Japan aut Shimada Noboru Division of Clinical Support, Hiroshima University Hospital, Hiroshima, Japan aut Iwaki Daisuke Division of Clinical Support, Hiroshima University Hospital, Hiroshima, Japan aut Asaeda Makoto Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi Minami-ku, 734-8551, Hiroshima, Japan aut Hirata Kazuhiko Division of Clinical Support, Hiroshima University Hospital, Hiroshima, Japan aut Ochi Mitsuo Department of Orthopaedic Surgery, Hiroshima University, Hiroshima, Japan aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/11(2015-11-01), 3251-3258 0942-2056 23:11<3251 2015 23 167 https://doi.org/10.1007/s00167-014-3162-7 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/s00167-014-3162-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Orita Naoya Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi Minami-ku, 734-8551, Hiroshima, Japan aut NATIONALLICENCE 700 1- Deie Masataka Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi Minami-ku, 734-8551, Hiroshima, Japan aut NATIONALLICENCE 700 1- Shimada Noboru Division of Clinical Support, Hiroshima University Hospital, Hiroshima, Japan aut NATIONALLICENCE 700 1- Iwaki Daisuke Division of Clinical Support, Hiroshima University Hospital, Hiroshima, Japan aut NATIONALLICENCE 700 1- Asaeda Makoto Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi Minami-ku, 734-8551, Hiroshima, Japan aut NATIONALLICENCE 700 1- Hirata Kazuhiko Division of Clinical Support, Hiroshima University Hospital, Hiroshima, Japan aut NATIONALLICENCE 700 1- Ochi Mitsuo Department of Orthopaedic Surgery, Hiroshima University, Hiroshima, Japan aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/11(2015-11-01), 3251-3258 0942-2056 23:11<3251 2015 23 167