Computational Investigation of Anatomic Factors Associated with Recurrent Patellar Dislocation
Faculty Mentor Information
Dr. Clare Fitzpatrick
Presentation Date
7-2017
Abstract
Computational simulations can be used to evaluate the mechanics of all potential combinations of predisposing factors to recurrent lateral patellar dislocation. In this study, patient specific anatomical geometries reconstructed from magnetic resonance (MR) scans are compared with a generic model. Both models are evaluated at varying flexion angles using finite element analysis (FEA) under uniform loading conditions and precise outcome measurements. The generic model is morphed to match four key anatomic parameters associated with patellar dislocation from the patient specific model. The anatomic factors are patella alta, tibial tubercle-trochlear groove distance, rotational deformities and trochlear dysplasia. The objective of this study is to compare joint mechanics between patient specific models and a simplified morphed generic model. This work will help identify patient specific geometry significant to recurrent patellar dislocation and repair. This analysis will determine the level of detail required in a patient specific model to appropriately represent patellofemoral joint mechanics. Ultimately, computational evaluation will be used to determine optimal surgical interventions on a patient specific basis.
Computational Investigation of Anatomic Factors Associated with Recurrent Patellar Dislocation
Computational simulations can be used to evaluate the mechanics of all potential combinations of predisposing factors to recurrent lateral patellar dislocation. In this study, patient specific anatomical geometries reconstructed from magnetic resonance (MR) scans are compared with a generic model. Both models are evaluated at varying flexion angles using finite element analysis (FEA) under uniform loading conditions and precise outcome measurements. The generic model is morphed to match four key anatomic parameters associated with patellar dislocation from the patient specific model. The anatomic factors are patella alta, tibial tubercle-trochlear groove distance, rotational deformities and trochlear dysplasia. The objective of this study is to compare joint mechanics between patient specific models and a simplified morphed generic model. This work will help identify patient specific geometry significant to recurrent patellar dislocation and repair. This analysis will determine the level of detail required in a patient specific model to appropriately represent patellofemoral joint mechanics. Ultimately, computational evaluation will be used to determine optimal surgical interventions on a patient specific basis.