ArticleJournal of experimental orthopaedics2018
Effect of geometric variations on tibiofemoral surface and post-cam design of normal knee kinematics restoration.
Article in Journal of experimental orthopaedics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Minimal clinically important difference (MCID), substantial clinical benefit (SCB), and patient-acceptable symptom state (PASS) in patients who have undergone total knee arthroplasty: a systematic review.Knee surgery & related research · 2024Review
- Posterior-stabilized total knee arthroplasty kinematics and joint laxity: A hybrid biomechanical study.Arthroplasty (London, England) · 2022Article
- Kinematics of bicruciate stabilized and cruciate retaining total knee arthroplasty.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2022Article
- A patient-specific 3D model of the knee to compare the femoral rollback before and after total knee arthroplasty (TKA).Journal of experimental orthopaedics · 2021Article
- Biomechanical and Clinical Effect of Patient-Specific or Customized Knee Implants: A Review.Journal of clinical medicine · 2020Review
- Reduction in tibiofemoral conformity in lateral unicompartmental knee arthroplasty is more representative of normal knee kinematics.Bone & joint research · 2019Article
- Loading on Attune® fixed-bearing cruciate-substituting total knee implant in knee malalignment during activities of daily living: A finite element analysis.Journal of orthopaedicsArticle
- Change in knee biomechanics during squat and walking induced by a modification in TKA size.Journal of orthopaedicsArticle
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundRestoration of natural knee kinematics for a designed mechanism in knee implants is required to achieve full knee function in total knee arthroplasty (TKA). In different posterior-stabilized TKAs, there are wide variations in tibiofemoral surfaces and post-cam design. However, it is not known whether these design variations preserve natural knee kinematics. The purpose of this study was to determine the most appropriate tibiofemoral surface and post-cam designs to restore natural knee kinematics of the TKA.
methodsA subject-specific finite element knee modal was used to evaluate tibiofemoral surface and post-cam design. Three different posts in convex, straight, and concave geometries were considered with a fixed circular cam design in this study. In addition, this post-cam design was applied to three different surface conformities for conforming, medial pivot, and subject anatomy mimetic tibiofemoral surfaces. We evaluated the femoral rollback, internal-external rotation, and quadriceps muscle force under a deep-knee-bend condition.
resultsThe three different tibiofemoral conformities showed that the convex post provided the most natural-knee-like femoral rollback. This was also observed in internal rotation. In surface conformity, subject anatomy mimetic tibiofemoral surfaces showed the most natural -knee-like kinematics and quadriceps force.
conclusionsThis study confirmed that convex post design and subject anatomy mimetic tibiofemoral surfaces provided the most natural-knee-like kinematics. This study suggested that post-cam design and tibiofemoral surface conformity should be considered in conventional and customized TKA.
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