caa a22 4500 605458227 CHVBK 20210128100227.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s00167-015-3696-3 doi (NATIONALLICENCE)springer-10.1007/s00167-015-3696-3 Biomechanical effect of posterolateral corner sectioning after ACL injury and reconstruction [Elektronische Daten] [Tommaso Bonanzinga, Cecilia Signorelli, Nicola Lopomo, Alberto Grassi, Maria Neri, Giuseppe Filardo, Stefano Zaffagnini, Maurilio Marcacci] Purpose: Posterolateral corner structures functionally interact with the ACL. The aim of this study was to investigate the capability of an isolated ACL reconstruction control laxity parameters in a knee with combined ACL and PLC and the increase in terms of laxity produced by the resection of the PC in an ACL-deficient knee. Method: An in vitro cadaveric study was performed on seven knees. The joints were analysed in the following conditions: intact, after ACL resection, after popliteus complex resection, after ACL reconstruction and after LCL. Testing laxity parameters were recorded with an intra-operative navigation system and defined as: AP displacement at 30° and 90° of flexion (AP30 and AP90) applying a 130N load and IE at 30° and 90° of knee flexion with a 5N load. Results: Sectioning the ACL significantly increased the AP30 at 30° and 90° of knee flexion (p<0.05). At 90° of knee flexion, the resection of the LCL determined a significant increase in terms of AP laxity (p<0.05). At 90° has been found a significant difference for the IE laxity (p<0.05) after PC resection. Sectioning the LCL produced a significant increase in IE laxity at 30° and 90° of knee flexion (p<0.05). Conclusion: Isolated ACL reconstruction is able to control the AP laxity with a combined complete lesion of the PLC at 30° of knee flexion, but not at higher angle of knee flexion. Considering the IE rotations, the reconstruction was not sufficient not even to control a partial lesion of the PLC. These findings suggest that additional surgical procedures should be considerate even when facing combined PLC lesion. European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA), 2015 Posterolateral corner nationallicence ACL nationallicence Combined lesions nationallicence Kinematics nationallicence Laxity nationallicence Bonanzinga Tommaso Clinica Ortopedica e Traumatologica II, Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano, 1/10, 40136, Bologna, Italy aut Signorelli Cecilia Clinica Ortopedica e Traumatologica II, Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano, 1/10, 40136, Bologna, Italy aut Lopomo Nicola Clinica Ortopedica e Traumatologica II, Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano, 1/10, 40136, Bologna, Italy aut Grassi Alberto Clinica Ortopedica e Traumatologica II, Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano, 1/10, 40136, Bologna, Italy aut Neri Maria Clinica Ortopedica e Traumatologica II, Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano, 1/10, 40136, Bologna, Italy aut Filardo Giuseppe Clinica Ortopedica e Traumatologica II, Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano, 1/10, 40136, Bologna, Italy aut Zaffagnini Stefano Clinica Ortopedica e Traumatologica II, Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano, 1/10, 40136, Bologna, Italy aut Marcacci Maurilio Clinica Ortopedica e Traumatologica II, Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano, 1/10, 40136, Bologna, Italy aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/10(2015-10-01), 2918-2924 0942-2056 23:10<2918 2015 23 167 https://doi.org/10.1007/s00167-015-3696-3 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/s00167-015-3696-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bonanzinga Tommaso Clinica Ortopedica e Traumatologica II, Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano, 1/10, 40136, Bologna, Italy aut NATIONALLICENCE 700 1- Signorelli Cecilia Clinica Ortopedica e Traumatologica II, Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano, 1/10, 40136, Bologna, Italy aut NATIONALLICENCE 700 1- Lopomo Nicola Clinica Ortopedica e Traumatologica II, Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano, 1/10, 40136, Bologna, Italy aut NATIONALLICENCE 700 1- Grassi Alberto Clinica Ortopedica e Traumatologica II, Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano, 1/10, 40136, Bologna, Italy aut NATIONALLICENCE 700 1- Neri Maria Clinica Ortopedica e Traumatologica II, Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano, 1/10, 40136, Bologna, Italy aut NATIONALLICENCE 700 1- Filardo Giuseppe Clinica Ortopedica e Traumatologica II, Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano, 1/10, 40136, Bologna, Italy aut NATIONALLICENCE 700 1- Zaffagnini Stefano Clinica Ortopedica e Traumatologica II, Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano, 1/10, 40136, Bologna, Italy aut NATIONALLICENCE 700 1- Marcacci Maurilio Clinica Ortopedica e Traumatologica II, Laboratorio di Biomeccanica ed Innovazione Tecnologica, Istituto Ortopedico Rizzoli, via di Barbiano, 1/10, 40136, Bologna, Italy aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/10(2015-10-01), 2918-2924 0942-2056 23:10<2918 2015 23 167