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Patellofemoral Instrumented Stress Testing

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Anterior Knee Pain and Patellar Instability

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Abstract

The evaluation of patellofemoral joint instability is still very subjective and limited by poor reproducibility and reliability. Physical examination tries to estimate the magnitude of joint laxity, but is not able to reproduce the same testing conditions (especially the force applied) or to reliably measure the magnitude of joint laxity (patellar displacement). The Porto Patella Testing Device (PPTD) is a testing device compatible with magnetic resonance imaging or computed tomography that is able to evaluate and measure patellofemoral joint laxity. It provides a valid, reliable, accurate and precise measurement of patellar displacement under applied stress to the patella and thus identify patients with pathological patellofemoral joint laxity. By analyzing the joint laxity and stiffness profile, this instrument-assisted MRI evaluation can identify subclinical cluster groups of patients with patellofemoral instability and thus personalize the treatment to the patient’s individual needs. The use of the PPTD can therefore be very useful in the clinical practice to support diagnostic decisions, customize the therapeutic decision-making and surgical planning, and follow the joint laxity profile outcomes after conservative or surgical interventions.

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Author information

Authors and Affiliations

  1. CMEMS—Center for MicroElectroMechanical Systems, University of Minho, Campus Azurém, Guimarães, Portugal

    Ana Leal

  2. Dom Henrique Research Centre, Porto, Portugal

    Renato Andrade, Cristina Valente, Rogério Pereira & João Espregueira-Mendes

  3. Clínica Espregueira - FIFA Medical Centre of Excellence, Porto, Portugal

    Renato Andrade, Cristina Valente, André Gismonti, Rogério Pereira & João Espregueira-Mendes

  4. Porto Biomechanics Laboratory (LABIOMEP), Faculty of Sports, University of Porto, Porto, Portugal

    Renato Andrade

  5. Faculty of Sports, University of Porto, Porto, Portugal

    Rogério Pereira

  6. Health Science Faculty, University Fernando Pessoa, Porto, Portugal

    Rogério Pereira

  7. 3B’s Research Group–Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, University of Minho, 4805-017, Barco, Guimarães, Portugal

    João Espregueira-Mendes

  8. ICVS/3B’s–PT Government Associate Laboratory, Braga/Guimarães, Portugal

    João Espregueira-Mendes

  9. School of Medicine, University of Minho, Braga, Portugal

    João Espregueira-Mendes

Authors
  1. Ana Leal
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  2. Renato Andrade
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  3. Cristina Valente
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  4. André Gismonti
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  5. Rogério Pereira
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  6. João Espregueira-Mendes
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Corresponding author

Correspondence to João Espregueira-Mendes .

Editor information

Editors and Affiliations

  1. Department of Orthopedic Surgery, Hospital Arnau de Vilanova, Valencia, Spain

    Vicente Sanchis-Alfonso

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Leal, A., Andrade, R., Valente, C., Gismonti, A., Pereira, R., Espregueira-Mendes, J. (2023). Patellofemoral Instrumented Stress Testing. In: Sanchis-Alfonso, V. (eds) Anterior Knee Pain and Patellar Instability. Springer, Cham. https://doi.org/10.1007/978-3-031-09767-6_53

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  • DOI: https://doi.org/10.1007/978-3-031-09767-6_53

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-031-09766-9

  • Online ISBN: 978-3-031-09767-6

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