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  • Title: Load sharing and ligament strains in balanced, overstuffed and understuffed UKA. A validated finite element analysis.
    Author: Innocenti B, Bilgen ÖF, Labey L, van Lenthe GH, Sloten JV, Catani F.
    Journal: J Arthroplasty; 2014 Jul; 29(7):1491-8. PubMed ID: 24581895.
    Abstract:
    The aim of this study was to quantify the effects of understuffing and overstuffing UKA on bone stresses, load distribution and ligament strains. For that purpose, a numerical knee model of a cadaveric knee was developed and was validated against experimental measurements on that same knee. Good agreement was found among the numerical and experimental results. This study showed that, even if a medial UKA is well-aligned with normal soft tissue tension and with correct thickness of the tibia component, it induces a stiffness modification in the joint that alters the load distribution between the medial and lateral compartments, the bone stress and the ligament strain potentially leading to an osteoarthritic progression.
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