Loading on Attune® fixed-bearing cruciate-substituting total knee implant in knee malalignment during activities of daily living: A finite element analysis.
biomechanical · Level V
Where this comes from
- Record sourced from PubMed, PMID 34290486.
- Also identified by DOI 10.1016/j.jor.2021.07.002 and PMC identifier 8280525.
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Abstract
To compare contact stresses between Attune® and PFC Sigma® total knee arthroplasty (TKA) implants in the presence of knee malalignment. Maximum contact stress after finite element analysis were compared during standing, walking, and stair climbing in 0°, 2.5° and 5°varus/valgus knee alignments. The percentage increase in contact stress was highest during walking with PFC Sigma® in 5° varus (238.5%), standing with Attune® in 5° valgus (127.2%), and standing with Attune® in 2.5° valgus (107.8%). The newer Attune® design may be associated with higher maximum contact stresses and increased risk of wear and implant failure.
Anatomy
- knee