caa a22 4500 605458251 CHVBK 20210128100227.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s00167-014-3138-7 doi (NATIONALLICENCE)springer-10.1007/s00167-014-3138-7 The necessity of clinical application of tibial reduction for detection of underestimated posterolateral rotatory instability in combined posterior cruciate ligament and posterolateral corner deficient knee [Elektronische Daten] [Han-Jun Lee, Yong-Beom Park, Young-Bong Ko, Seong-Hwan Kim, Hyeok-Bin Kwon, Dong-Seok Yu, Young-Bok Jung] Purpose: The purpose of this study was to evaluate the usefulness of tibial reduction during dial test for clinical detection of underestimated posterolateral rotatory instability (PLRI) in combined posterior cruciate ligament (PCL)-posterolateral corner (PLC) deficient knee in terms of external rotation laxity and clinical outcomes. Methods: Twenty-one patients who classified as grade I PLRI using dial test with subluxated tibia, but classified as grade II with tibial reduction evaluated retrospectively. The mean follow-up was 39.3months (range 24-61months). Each patient was evaluated by the following variables: posterior translation and varus laxity on radiograph, KT-1000 arthrometer, dial test (reduced and subluxated position), International Knee Documentation Committee, Orthopädische Arbeitsgruppe Knie scoring system and Tegner activity scale. Results: There were significant improvements in posterior tibial translation (8.6±2.0 to 2.1±1.0mm; P<0.001), varus laxity (3.3±1.3 to 1.4±0.5mm; P<0.001) and external rotation (13.2°±0.8° to 3.6°±1.1° at 30°, 13.3°±0.9° to 3.6°±0.9° at 90°; P<0.001). The clinical scores were improved significantly at the last follow-up (P<0.001). The external tibial rotation during dial test with tibial reduction increased from 6.8°±0.9 to 13.2°±0.8° at 30° of knee flexion, from 7.0°±0.8° to 13.3°±0.9° at 90° (P<0.001). Conclusions: The clinical application of reduction of posteriorly subluxated tibia during the dial test was essential for an appropriate treatment of underestimated PLRI in combined PCL-PLC deficient knee. Level of evidence: Retrospective case series, Level IV. Springer-Verlag Berlin Heidelberg, 2014 Posterior cruciate ligament nationallicence Posterolateral rotator instability nationallicence Dial test nationallicence Tibial reduction nationallicence Lee Han-Jun Department of Orthopaedic Surgery, Chung-Ang University School of Medicine, Seoul, Korea aut Park Yong-Beom Department of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Irwon-dong 50, Gangnam-gu, 135-710, Seoul, Korea aut Ko Young-Bong Department of Orthopaedic Surgery, Chung-Ang University School of Medicine, Seoul, Korea aut Kim Seong-Hwan Department of Orthopaedic Surgery, Chung-Ang University School of Medicine, Seoul, Korea aut Kwon Hyeok-Bin Department of Orthopaedic Surgery, Chung-Ang University School of Medicine, Seoul, Korea aut Yu Dong-Seok Department of Orthopaedic Surgery, Guro TnTn Hospital, Seoul, Korea aut Jung Young-Bok Department of Orthopaedic Surgery, Hyundae General Hospital, Namyangju-si, Korea aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/10(2015-10-01), 3062-3069 0942-2056 23:10<3062 2015 23 167 https://doi.org/10.1007/s00167-014-3138-7 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/s00167-014-3138-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lee Han-Jun Department of Orthopaedic Surgery, Chung-Ang University School of Medicine, Seoul, Korea aut NATIONALLICENCE 700 1- Park Yong-Beom Department of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Irwon-dong 50, Gangnam-gu, 135-710, Seoul, Korea aut NATIONALLICENCE 700 1- Ko Young-Bong Department of Orthopaedic Surgery, Chung-Ang University School of Medicine, Seoul, Korea aut NATIONALLICENCE 700 1- Kim Seong-Hwan Department of Orthopaedic Surgery, Chung-Ang University School of Medicine, Seoul, Korea aut NATIONALLICENCE 700 1- Kwon Hyeok-Bin Department of Orthopaedic Surgery, Chung-Ang University School of Medicine, Seoul, Korea aut NATIONALLICENCE 700 1- Yu Dong-Seok Department of Orthopaedic Surgery, Guro TnTn Hospital, Seoul, Korea aut NATIONALLICENCE 700 1- Jung Young-Bok Department of Orthopaedic Surgery, Hyundae General Hospital, Namyangju-si, Korea aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/10(2015-10-01), 3062-3069 0942-2056 23:10<3062 2015 23 167