Combined anterior and rotational knee laxity measurements improve the diagnosis of anterior cruciate ligament injuries

Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA
Caroline MoutonRomain Seil

Abstract

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. 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 200 N (ATD200), primary compliance from 30 to 50 N (PCA) and secondary compliance from 100 to 200 N (SCA). Furthermore, four variables in rotational laxity were considered: internal and external rotation at 5 N m (IR5/ER5) and compliance from 2 to 5 N m (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. Sensitivity and specificity reached, respectively, 75 and 95 % for ATD200 (threshold: 1.2 mm) 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...Continue Reading

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Citations

Mar 14, 2016·Current Reviews in Musculoskeletal Medicine·Caroline MoutonRomain Seil
Jul 18, 2017·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Christophe A G MeyerDaniel Theisen
Apr 30, 2020·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Daniele TradatiRomain Seil

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