caa a22 4500 605458626 CHVBK 20210128100229.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s00167-015-3757-7 doi (NATIONALLICENCE)springer-10.1007/s00167-015-3757-7 Combined anterior and rotational knee laxity measurements improve the diagnosis of anterior cruciate ligament injuries [Elektronische Daten] [C. Mouton, D. Theisen, T. Meyer, H. Agostinis, C. Nührenbörger, D. Pape, R. Seil] Purpose: This study analysed whether associating the side-to-side difference in displacement and the slope of the load-displacement curve of anterior and rotational knee laxity measurements would improve the instrumental diagnosis of anterior cruciate ligament (ACL) ruptures and help to detect different types of ACL tears. Methods: Anterior and rotational knee laxity was measured in 128 patients with an arthroscopically confirmed ACL injury and 104 healthy controls. Side-to-side differences were determined for three variables in anterior laxity: anterior displacement at 200N (ATD200), primary compliance from 30 to 50N (PCA) and secondary compliance from 100 to 200N (SCA). Furthermore, four variables in rotational laxity were considered: internal and external rotation at 5Nm (IR5/ER5) and compliance from 2 to 5Nm (C IR/C ER). Receiver operating characteristic curves allowed to determine thresholds, specificities and sensitivities to detect ACL lesions, based on single variables considered and combinations thereof. Results: Sensitivity and specificity reached, respectively, 75 and 95% for ATD200 (threshold: 1.2mm) and 38 and 95% for IR5 (threshold: 3.2°). If either two out of the three variables were positive for anterior laxity or both IR5 and C IR were positive, 81% of patients were identified without a false positive. All patients for whom ATD200 was >3.7mm, PCA>48μm/N or SCA>17.5µm/N had ACL remnants that were either totally resorbed or healed on the posterior cruciate ligament. Conclusion: Combined instrumented anterior and rotational knee laxity measurements have excellent diagnostic value for ACL injury, provided that several measurements be considered concomitantly. Level of evidence: Diagnostic study, Level III. European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA), 2015 Anterior knee laxity nationallicence Rotational knee laxity nationallicence Anterior cruciate ligament nationallicence Injury diagnosis nationallicence Combined laxity measurements nationallicence Mouton C. Sports Medicine Research Laboratory, Luxembourg Institute of Health, Luxembourg, Luxembourg aut Theisen D. Sports Medicine Research Laboratory, Luxembourg Institute of Health, Luxembourg, Luxembourg aut Meyer T. Institute of Sports and Preventive Medicine, Saarland University, Saarbrücken, Germany aut Agostinis H. Sports Medicine Research Laboratory, Luxembourg Institute of Health, Luxembourg, Luxembourg aut Nührenbörger C. Sports Clinic, Centre Hospitalier of Luxembourg, Luxembourg, Luxembourg aut Pape D. Sports Medicine Research Laboratory, Luxembourg Institute of Health, Luxembourg, Luxembourg aut Seil R. Sports Medicine Research Laboratory, Luxembourg Institute of Health, Luxembourg, Luxembourg aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/10(2015-10-01), 2859-2867 0942-2056 23:10<2859 2015 23 167 https://doi.org/10.1007/s00167-015-3757-7 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/s00167-015-3757-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mouton C. Sports Medicine Research Laboratory, Luxembourg Institute of Health, Luxembourg, Luxembourg aut NATIONALLICENCE 700 1- Theisen D. Sports Medicine Research Laboratory, Luxembourg Institute of Health, Luxembourg, Luxembourg aut NATIONALLICENCE 700 1- Meyer T. Institute of Sports and Preventive Medicine, Saarland University, Saarbrücken, Germany aut NATIONALLICENCE 700 1- Agostinis H. Sports Medicine Research Laboratory, Luxembourg Institute of Health, Luxembourg, Luxembourg aut NATIONALLICENCE 700 1- Nührenbörger C. Sports Clinic, Centre Hospitalier of Luxembourg, Luxembourg, Luxembourg aut NATIONALLICENCE 700 1- Pape D. Sports Medicine Research Laboratory, Luxembourg Institute of Health, Luxembourg, Luxembourg aut NATIONALLICENCE 700 1- Seil R. Sports Medicine Research Laboratory, Luxembourg Institute of Health, Luxembourg, Luxembourg aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/10(2015-10-01), 2859-2867 0942-2056 23:10<2859 2015 23 167