ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2016
No condylar lift-off occurs because of excessive lateral soft tissue laxity in neutrally aligned total knee arthroplasty: a computer simulation study.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.
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Who cites it
11 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.
- Midflexion instability in total knee arthroplasty: a systematic review.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2021Pooled it
- Robotic-assisted bi-cruciate stabilized TKA with a 3-degree varus inclination does not affect PROMs, regardless of pre-arthritic CPAK classification matching.Archives of orthopaedic and trauma surgery · 2025Article
- Preoperative coronal alignment and tibial implant positioning affect condylar lift-off in BCS-TKA.Journal of experimental orthopaedics · 2025Article
- Large angular correction of arithmetic coronal alignment is associated with residual lateral laxity after total knee arthroplasty in varus knees for Japanese patients.Journal of experimental orthopaedics · 2024Article
- Intraoperative physiological lateral laxity in extension and flexion for varus knees did not affect short-term clinical outcomes and patient satisfaction.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Article
- Classical target coronal alignment in high tibial osteotomy demonstrates validity in terms of knee kinematics and kinetics in a computer model.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Article
- Medial soft tissue contracture does not always exist in varus osteoarthritis knees in total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2019Article
- Preoperative tibial mechanical axis orientation and articular surface design influence on the coronal joint line orientation relative to the ground during gait after total knee arthroplasties.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2018Article
- CORR Insights®: Femoral Component External Rotation Affects Knee Biomechanics: A Computational Model of Posterior-stabilized TKA.Clinical orthopaedics and related research · 2018Article
- Varus femoral and tibial coronal alignments result in different kinematics and kinetics after total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017Article
- Clinical Faceoff: Do We Need Special Strategies for Asian Patients with TKA?Clinical orthopaedics and related research · 2016Article
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeCondylar lift-off can induce excessive polyethylene wear after total knee arthroplasty (TKA). A computer simulation was used to evaluate the influence of femoral varus alignment and lateral collateral ligament (LCL) laxity on lift-off after single-design TKA. It was hypothesised that proper ligament balancing and coronal alignment would prevent lift-off.
methodsThe computer model in this study is a dynamic musculoskeletal program that simulates gait up to 60° of knee flexion. The lift-off phenomenon was defined as positive with an intercomponent distance of >2 mm. In neutrally aligned components in the coronal plane, the femoral and tibial components were set perpendicular to the femoral and tibial mechanical axis, respectively. The femoral coronal alignment was changed from neutral to 5° varus in 1° increments. Simultaneously, the LCL length was elongated from 0 to 5 mm in 1-mm increments to provide a model of pathological slack.
resultsWithin 2° of femoral varus alignment, lift-off did not occur even if the LCL was elongated by up to 5 mm. However, lift-off occurred easily in the stance phase in femoral varus alignments of >3° with slight LCL slack. The contact forces of the tibiofemoral joint were influenced more by femoral varus alignment than by LCL laxity.
conclusionsAiming for neutral alignment in severely varus knees makes it difficult to achieve appropriate ligament balance. Our study suggests that no lift-off occurs with excessive LCL laxity alone in a neutrally aligned TKA and therefore that varus alignment should be avoided to decrease lift-off after TKA. LEVEL OF EVIDENCE: Case series, Level IV.
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