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|title: ||The importance of geometry and thickness for the conception of a new patellofemoral prosthesis|
|authors: ||Castro, A.|
Simões, J. A.
|keywords: ||Patellofemoral arthropalsty|
|issue date: ||2010|
|abstract: ||One of the major reasons for the failure of currently available knee implants is the stress
shielding effect. In loading situations, the bone is less requested, so the rate of bone
remodeling decreases. The purpose for this work was to analyze the influence of the
geometry and rigidity of the bone-implant interface on the stress shielding effect and on
the stability of the prosthesis, applying the Finite Element Method. The results showed
that elastic strain is lower on bone areas close to the studied models of patellofemoral
prosthesis, on the period after the implantation. Later on, bone rupture by fatigue may
occur, due to high strain, particularly on the models with fixation pins for the prosthesis.
Moreover, contact analyses showed that stability is best promoted without fixation pins.|
|publisher version/DOI: ||http://www.cmbbe2010.cf.ac.uk/|
|source: ||9th International Symposium on Computer Methods in Biomechanics & Biomedical Engineering|
|appears in collections||MEC - Comunicações|
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