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Grafted Vitamin‐E UHMWPE may increase the durability of posterior stabilized and constrained condylar total knee replacements
Author(s) -
Wernle James D.,
Mimnaugh Kimberly D.,
Rufner Alicia S.,
Popoola Oludele O.,
Argenson JeanNoel,
Kelly Michael
Publication year - 2017
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.33710
Subject(s) - materials science , polyethylene , delamination (geology) , composite material , condyle , durability , orthodontics , medicine , paleontology , biology , subduction , tectonics
The suitability of grafted vitamin‐E highly crosslinked polyethylene (VE‐HXPE) for use in posterior stabilized (PS) and constrained condylar knee (CCK) applications has not been explored. We hypothesized that VE‐HXPE performs better than conventional and crosslinked polyethylene under clinically relevant conditions. PS tibial post fracture resistance under adverse shear loading conditions, CCK tibial post resistance to torsional fatigue, delamination resistance under high stress, and wear resistance were evaluated. Grafted VE‐HXPE exhibits (1) 10% and 57% improved PS post fatigue strength compared to conventional PE (CPE) and remelted HXPE; (2) 45% improved CCK post fatigue strength compared to CPE; (3) Greater than 36× the delamination resistance of CPE; and (4) 96% and 73% wear reduction compared to CPE and HXPE. VE‐HXPE performed well under clinically relevant in vitro conditions. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 1789–1798, 2017.