ArticleJournal of orthopaedic translation2020
Systematic effects of femoral component rotation and tibial slope on the medial and lateral tibiofemoral flexion gaps in total knee arthroplasty.
Article in Journal of orthopaedic translation, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 10 citations in OpenAlex.
- Influence of femoral component downsizing on knee extension and resultant extension gap in TKA.Journal of clinical orthopaedics and trauma · 2025Article
- The comparison of three dimensional and two dimensional evaluation of varus/valgus stress X-rays following total knee arthroplasty.Journal of orthopaedic surgery and research · 2025Article
- Autogenous structural bone graft reconstruction of ≥ 10-mm-deep uncontained medial proximal tibial defects in primary total knee arthroplasty.Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology · 2024Article
- A Three-dimensional Comparison of Pre- and Post-component Position in a Series of Off-label Robotic-assisted Revision Total Knee Arthroplasties.Arthroplasty today · 2024Article
- A nationwide comparison of staggered and simultaneous bilateral knee arthroplasty during a single hospitalization: Trends, risks and benefits.Journal of orthopaedic translation · 2022Article
- Treatment of tibial plateau fractures: A comparison of two different operation strategies with medium-term follow up.Journal of orthopaedic translation · 2022Article
- Evaluation of the flexion gap with a distal femoral trial component in posterior-stabilized total knee arthroplasty.Knee surgery & related research · 2022Article
- HURWA robotic-assisted total knee arthroplasty improves component positioning and alignment - A prospective randomized and multicenter study.Journal of orthopaedic translation · 2022Article
- Translation of engineering to medicine: A focus on finite element analysis.Journal of orthopaedic translation · 2020Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo quantify the effects of the systematic internal and external femoral component rotations and tibial slope on the medial and lateral tibiofemoral gaps in total knee endoprostheses.
methodsNineteen knee cadaver specimens with an intact ligament apparatus were fixed in a custom frame, facilitating physiological flexion motion. Virtual total knee arthroplasty (TKA) was performed on three-dimensional models obtained from computed tomography scans (0° and 90° flexions) with systematically altered femur rotations and tibial slopes.
resultsBoth the femur rotation and the tibial slope influenced the medial and lateral tibiofemoral flexion gaps (
conclusionFor established surgical methods, we recommend a neutral femur rotation for a 0° tibial slope and a 3° external femur rotation for a tibial slope of 9-10°. The translational potential of this research shows that while the rotation of the femoral component in extension has no effect on the gap size, owing to the axis of rotation being perpendicular to the gap, for a 90° flexion, we not only observe differences in the gap size between the medial and lateral but also unequal differences on either side depending on the inward or outward rotation. The main reason for this is the position of the axis of rotation, which is not precisely half way between the lateral and medial contact points. The results show that rotation of the femoral component always creates an unbalanced flexion gap. THE TRANSLATIONAL POTENTIAL OF THIS ARTICLE: The article points out the differences in the tibiofemoral gap in total knee endoprostheses due to the systematic internal and external femoral component rotation. While in lower leg extension there are no differences seen, in 90° knee-flexion there are unequal differences within the medial and lateral compartment that show a mathematical relationship towards the femoral compartment rotation which needs to be intraoperatively considered.
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