caa a22 4500 605456763 CHVBK 20210128100219.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s00167-014-3039-9 doi (NATIONALLICENCE)springer-10.1007/s00167-014-3039-9 An analysis of normative data on the knee rotatory profile and the usefulness of the Rotatometer, a new instrument for measuring tibiofemoral rotation: the reliability of the knee Rotatometer [Elektronische Daten] [Ju Chung, Keun Ryu, Dong Lee, Kyung Yoon, Yang Park, Hyung Kim, Jae Kim] Purpose: This study proposes a simple and noninvasive instrument called the "Rotatometer” to measure tibiofemoral rotation and investigates its clinical applicability to the assessment of static rotational knee laxity. Methods: The degree of tibiofemoral rotation was measured for a sample of 94 healthy volunteers with 188 knees by using the Rotatometer. The measurement was made by two independent and blinded examiners in three sessions at one-month intervals. The normative rotational profile and its relationship with gender and age were evaluated, and inter-observer reliability and intra-observer reliability were calculated. Results: Males showed 62°±5° of external rotation, whereas females, 64°±5°. Males showed 44°±5° of internal rotation, whereas females, 49°±4°. Females showed significantly higher degrees of rotation than males. Tibiofemoral rotation was not correlated with age, and external rotation and internal rotation had a moderate positive relationship. Inter-observer reliability ranged from 0.84 to 0.91 for external rotation and 0.90 to 0.95 for internal rotation, and intra-observer reliability ranged from 0.69 to 0.89 for external rotation and 0.87 to 0.95 for internal rotation. Conclusions: The results suggest the Rotatometer to be a simple and noninvasive device with high inter- and intra-observer reliability. The device can provide a normative rotational profile for reference purposes and thus can be used to determine the preoperative and postoperative rotational status of knees with anterior cruciate ligament injuries and compare results from different reconstruction techniques. Level of evidence: Diagnostic study, Level III. Springer-Verlag Berlin Heidelberg, 2014 Rotatory profile nationallicence Tibiofemoral rotation nationallicence Pivot shift nationallicence Rotatory laxity nationallicence Measurement device nationallicence Chung Ju Center for Joint Disease, Department of Orthopaedic Surgery, CHA Bundang Medical Center, School of Medicine, CHA University, 351 Yatap-dong, Bundang-gu, 463-712, Sungnam-si, Kyonggi-do, South Korea aut Ryu Keun Center for Joint Disease, Department of Orthopaedic Surgery, CHA Bundang Medical Center, School of Medicine, CHA University, 351 Yatap-dong, Bundang-gu, 463-712, Sungnam-si, Kyonggi-do, South Korea aut Lee Dong Department of Orthopaedic Surgery, Severance Hospital, College of Medicine,, Yonsei University, 134 Sinchondong, C.P.O. Box 8044, Seoul, South Korea aut Yoon Kyung Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University Medical Center, 26 Kyunghee-daero, Dongdaemun-gu, Seoul, South Korea aut Park Yang Center for Joint Disease, Department of Orthopaedic Surgery, CHA Bundang Medical Center, School of Medicine, CHA University, 351 Yatap-dong, Bundang-gu, 463-712, Sungnam-si, Kyonggi-do, South Korea aut Kim Hyung Center for Joint Disease, Department of Orthopaedic Surgery, CHA Bundang Medical Center, School of Medicine, CHA University, 351 Yatap-dong, Bundang-gu, 463-712, Sungnam-si, Kyonggi-do, South Korea aut Kim Jae Center for Joint Disease, Department of Orthopaedic Surgery, CHA Bundang Medical Center, School of Medicine, CHA University, 351 Yatap-dong, Bundang-gu, 463-712, Sungnam-si, Kyonggi-do, South Korea aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/9(2015-09-01), 2727-2733 0942-2056 23:9<2727 2015 23 167 https://doi.org/10.1007/s00167-014-3039-9 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/s00167-014-3039-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chung Ju Center for Joint Disease, Department of Orthopaedic Surgery, CHA Bundang Medical Center, School of Medicine, CHA University, 351 Yatap-dong, Bundang-gu, 463-712, Sungnam-si, Kyonggi-do, South Korea aut NATIONALLICENCE 700 1- Ryu Keun Center for Joint Disease, Department of Orthopaedic Surgery, CHA Bundang Medical Center, School of Medicine, CHA University, 351 Yatap-dong, Bundang-gu, 463-712, Sungnam-si, Kyonggi-do, South Korea aut NATIONALLICENCE 700 1- Lee Dong Department of Orthopaedic Surgery, Severance Hospital, College of Medicine,, Yonsei University, 134 Sinchondong, C.P.O. Box 8044, Seoul, South Korea aut NATIONALLICENCE 700 1- Yoon Kyung Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University Medical Center, 26 Kyunghee-daero, Dongdaemun-gu, Seoul, South Korea aut NATIONALLICENCE 700 1- Park Yang Center for Joint Disease, Department of Orthopaedic Surgery, CHA Bundang Medical Center, School of Medicine, CHA University, 351 Yatap-dong, Bundang-gu, 463-712, Sungnam-si, Kyonggi-do, South Korea aut NATIONALLICENCE 700 1- Kim Hyung Center for Joint Disease, Department of Orthopaedic Surgery, CHA Bundang Medical Center, School of Medicine, CHA University, 351 Yatap-dong, Bundang-gu, 463-712, Sungnam-si, Kyonggi-do, South Korea aut NATIONALLICENCE 700 1- Kim Jae Center for Joint Disease, Department of Orthopaedic Surgery, CHA Bundang Medical Center, School of Medicine, CHA University, 351 Yatap-dong, Bundang-gu, 463-712, Sungnam-si, Kyonggi-do, South Korea aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/9(2015-09-01), 2727-2733 0942-2056 23:9<2727 2015 23 167