86235 20231006143254.0 doi 10.1186/s40634-019-0200-x sideral 114755 ART-2019-114755 eng Sanchis-Alfonso, Vicente Parametric finite element model of medial patellofemoral ligament reconstruction model development and clinical validation 2019 Access copy available to the general public Unrestricted Background: Currently, there is uncertainty regarding the long-term outcome of medial patellofemoral ligament reconstructions (MPFLr). Our objectives were: (1) to develop a parametric model of the patellofemoral joint (PFJ) enabling us to simulate different surgical techniques for MPFLr; (2) to determine the negative effects on the PFJ associated with each technique, which could be related to long-term deterioration of the PFJ. Methods: A finite element model of the PFJ was created based on CT data from 24 knees with chronic lateral patellar instability. Patella contact pressure and maximum MPFL-graft stress at five angles of knee flexion (0, 30, 60, 90 and 120°) were analysed in three types of MPFLr: anatomic, non-anatomic with physiometric behaviour, and non-anatomic with non-physiometric behaviour. Results: An increase in patella contact pressure was observed at 0 and 30° of knee flexion after both anatomic and non-anatomic MPFLr with physiometric behaviour. In both reconstructions, the ligament was tense between 0 and 30° of knee flexion, but at 60, 90 and 120°, it had no tension. In the third reconstruction, the behaviour was completely the opposite. Conclusion: A parametric model of the PFJ enables us to evaluate different types of MPFLr throughout the full range of motion of the knee, regarding the effect on the patellofemoral contact pressure, as well as the kinematic behaviour of the MPFL-graft and the maximum MPFL-graft stress. info:eu-repo/grantAgreement/ES/MICINN/DPI2016-80283-C2-2-R info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 0.682 2019 Orthopedics and Sports Medicine 2019 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Alastruey-López, Diego Ginovart, Gerard Montesinos-Berry, Erik García-Castro, Fabio Ramírez-Fuentes, Cristina Monllau, Joan Carles Alberich-Bayarri, Ángel Pérez, María Ángeles Universidad de Zaragoza (orcid)0000-0002-2901-4188 5004 605 Universidad de Zaragoza Dpto. Ingeniería Mecánica Área Mec.Med.Cont. y Teor.Est. 6, 32 (2019), [15 pp.] J. exp. orthop. Journal of Experimental Orthopaedics 2197-1153 2989910 http://zaguan.unizar.es/record/86235/files/texto_completo.pdf Versión publicada 105324 http://zaguan.unizar.es/record/86235/files/texto_completo.jpg?subformat=icon icon Versión publicada https://www.scopus.com/inward/record.uri?eid=2-s2.0-85068734996&doi=10.1186%2fs40634-019-0200-x&partnerID=40&md5=1ffcdcbd48a9750a0c2bbe9009a7ea36 Texto completo de la revista oai:zaguan.unizar.es:86235 articulos driver 2023-10-06-14:06:13 ARTICLE