ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2014
Does total knee arthroplasty modify flexion axis of the knee?
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Total Knee Arthroplasty Violates the Law of Burmester-A Biomechanical Investigation.Journal of personalized medicine · 2022Article
- Mechanically aligned total knee arthroplasty carries a risk of bony gap changes and flexion-extension axis displacement.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017Article
- Continuous passive motion and its effects on knee flexion after total knee arthroplasty in patients with knee osteoarthritis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2016Article
- Changes in the orientation of knee functional flexion axis during passive flexion and extension movements in navigated total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2016Article
- Effects of total knee arthroplasty on ankle alignment in patients with varus gonarthrosis: Do we sacrifice ankle to the knee?Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2016Article
- Does implant design and surgical technique improve the clinical outcome in total knee arthroplasty?Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2014Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo prospectively investigate whether preoperative functional flexion axis in patients with osteoarthritis- and varus-alignment changes after total knee arthroplasty and whether a correlation exists both between preoperative functional flexion axis and native limb deformity.
methodsA navigated total knee arthroplasty was performed in 108 patients using a specific software to acquire passive joint kinematics before and after implant positioning. The knee was cycled through three passive range of motions, from 0° to 120°. Functional flexion axis was computed using the mean helical axis algorithm. The angle between the functional flexion axis and the surgical transepicondylar axis was determined on frontal (α (F)) and axial (α (A)) plane. The pre- and postoperative hip-knee-ankle angle, related to femur mechanical axis, was determined.
resultsPostoperative functional flexion axis was different from preoperative only on frontal plane, while no differences were found on axial plane. No correlation was found between preoperative α (A) and native limb deformity, while a poor correlation was found in frontal plane, between α (F) and preoperative hip-knee-ankle angle.
conclusionsTotal knee arthroplasty affects functional flexion axis only on frontal plane while has no effect on axial plane. Preoperative functional flexion axis is in a more varus position respect to the transepicondylar axis both in pre- and postoperative conditions. Moreover, the position of the functional axis on frontal plane in preoperative conditions is dependent on native limb alignment, while on axial plane is not dependent on the amount of preoperative varus deformity.
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