Parametric finite element model of medial patellofemoral ligament reconstruction model development and clinical validation
Sanchis-Alfonso, Vicente (Hospital Arnau de Vilanova (Lleida, Catalunya))
Alastruey-López, Diego (Instituto de Investigación en Ingeniería de Aragón)
Ginovart, Gerard (Hospital Terres de l'Ebre)
Montesinos-Berry, Erik (Agoriaz Orthopaedic Center, Montreux, Switzerland)
García-Castro, Fabio (QUIBIM SL. Quantitative Imaging Biomarkers in Medicine)
Ramírez-Fuentes, Cristina (Hospital Universitari i Politècnic La Fe (València))
Monllau García, Joan Carles (Universitat Autònoma de Barcelona. Departament de Cirurgia)
Alberich-Bayarri, Angel (Instituto de Investigación Sanitaria La Fe)
Pérez, María Angeles (Instituto de Investigación en Ingeniería de Aragón)

Data:	2019
Resum:	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.
Ajuts:	Agencia Estatal de Investigación DPI2016-80283-C2-2-R
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Publicat a:	Journal of Experimental Orthopaedics, Vol. 6 Núm. 1 (january 2019) , p. 32, ISSN 2197-1153

DOI: 10.1186/s40634-019-0200-x
PMID: 31278510

15 p, 2.9 MB

El registre apareix a les col·leccions:
Articles > Articles de recerca
Articles > Articles publicats