caa a22 4500 605458510 CHVBK 20210128100229.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s00167-014-3095-1 doi (NATIONALLICENCE)springer-10.1007/s00167-014-3095-1 The role of the deep medial collateral ligament in controlling rotational stability of the knee [Elektronische Daten] [Etienne Cavaignac, Karel Carpentier, Regis Pailhé, Thomas Luyckx, Johan Bellemans] Purpose: The tibial insertion of the deep medial collateral ligament (dMCL) is frequently sacrificed when the proximal tibial cut is performed during total knee arthroplasty. The role of the dMCL in controlling the knee's rotational stability is still controversial. The aim of this study was to quantify the rotational laxity induced by an isolated lesion of the dMCL as it occurs during tibial preparation for knee arthroplasty. Methods: An isolated resection of the deep MCL was performed in 10 fresh-frozen cadaver knees. Rotational laxity was measured during application of a standard 5.0N.m rotational torque. Maximal tibial rotation was measured at different knee flexion angles using an image-guided navigation system (Medivision Surgetics system, Praxim, Grenoble, France) before and after dMCL resection. Results: In all cases, internal and external tibial rotation increased after dMCL resection. Total rotational laxity increased significantly for all knee flexion angles, with an average difference of +7.8° (SD 5.7) with the knee in extension, +8.9° (SD 1.9) in 30° flexion, +7° (SD 2.9) in 60° flexion and +5.3° (SD 2.8) in 90° flexion. Conclusions: Sacrificing the tibial insertion of the deep MCL increases rotational laxity of the knee by 5°-9°, depending on the knee flexion angle. Based on our findings, new surgical techniques and implants that preserve the dMCL insertion such as tibial inlay components should be developed. Further clinical evaluations are necessary. Springer-Verlag Berlin Heidelberg, 2014 Deep MCL nationallicence Rotational stability nationallicence Knee prosthesis nationallicence Inlay technique nationallicence Cavaignac Etienne Institut de l'appareil locomoteur, CHU Rangueil, 1, Avenue Jean Poulhès TSA 50032, 31059, Toulouse Cedex 9, France aut Carpentier Karel Department of Orthopedic Surgery and Traumatology, University Hospitals Leuven, Louvain, Belgium aut Pailhé Regis Institut de l'appareil locomoteur, CHU Rangueil, 1, Avenue Jean Poulhès TSA 50032, 31059, Toulouse Cedex 9, France aut Luyckx Thomas Department of Orthopedic Surgery and Traumatology, University Hospitals Leuven, Louvain, Belgium aut Bellemans Johan Department of Orthopedic Surgery and Traumatology, University Hospitals Leuven, Louvain, Belgium aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/10(2015-10-01), 3101-3107 0942-2056 23:10<3101 2015 23 167 https://doi.org/10.1007/s00167-014-3095-1 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/s00167-014-3095-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cavaignac Etienne Institut de l'appareil locomoteur, CHU Rangueil, 1, Avenue Jean Poulhès TSA 50032, 31059, Toulouse Cedex 9, France aut NATIONALLICENCE 700 1- Carpentier Karel Department of Orthopedic Surgery and Traumatology, University Hospitals Leuven, Louvain, Belgium aut NATIONALLICENCE 700 1- Pailhé Regis Institut de l'appareil locomoteur, CHU Rangueil, 1, Avenue Jean Poulhès TSA 50032, 31059, Toulouse Cedex 9, France aut NATIONALLICENCE 700 1- Luyckx Thomas Department of Orthopedic Surgery and Traumatology, University Hospitals Leuven, Louvain, Belgium aut NATIONALLICENCE 700 1- Bellemans Johan Department of Orthopedic Surgery and Traumatology, University Hospitals Leuven, Louvain, Belgium aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/10(2015-10-01), 3101-3107 0942-2056 23:10<3101 2015 23 167