ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2014
Comparison of stability and kinematics of the natural knee versus a PS TKA with a 'third condyle'.
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 18 papers, 1 of them a synthesis that pooled it.
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Who cites it
18 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Implant survival of 3rd-condyle and post-cam posterior-stabilised total knee arthroplasty are comparable at follow-up > 10 years: a systematic review.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022Pooled it
- New mobile-bearing TKA with unique ball and socket post-cam mechanism offers similar function and stability with better prosthesis fit and gap balancing compared to an established fixed-bearing prosthesis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2019Trial
- [Numerical analysis research on the impact of tibial tray fixation peg structure on initial fixation stability in total knee arthroplasty].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2025Article
- In Vitro Verification of Simulated Daily Activities Using Implant-Specific Kinematics from In Vivo Measurements.Bioengineering (Basel, Switzerland) · 2024Article
- Posterior-stabilized total knee arthroplasty kinematics and joint laxity: A hybrid biomechanical study.Arthroplasty (London, England) · 2022Article
- Over-voluming predicted by pre-operative planning in 24% of total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2019Article
- New design total knee arthroplasty shows medial pivoting movement under weight-bearing conditions.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2019Article
- Patellofemoral design enhancements reduce long-term complications of postero-stabilized total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2019Article
- Association between anteroposterior laxity in mid-range flexion and subjective healing of instability after total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017Article
- Assessment of the midflexion rotational laxity in posterior-stabilized total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017Article
- Influence of mediolateral tibial baseplate position in TKA on knee kinematics and retropatellar pressure.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017Article
- Popliteus impingement after TKA may occur with well-sized prostheses.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017Article
- Tibiofemoral forces for the native and post-arthroplasty knee: relationship to maximal laxity through a functional arc of motion.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017Article
- Effect of soft tissue laxity of the knee joint on limb alignment correction in open-wedge high tibial osteotomy.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2016Article
- Navigation-based tibial rotation at 90° of flexion is associated with better range of motion in navigated total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2016Article
- Intraoperative anthropomorphic study of anterior femoral condyles compared with sizing of femoral arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2016Article
- Does patellofemoral geometry in TKA affect patellar position in mid-flexion?Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2015Article
- Femoral and tibial insert downsizing increases the laxity envelope in TKA.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2014Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe goal of this study was to compare the kinematics of knees before and after total knee arthroplasty (TKA) that relies on an inter-condylar 'third condyle'. The hypothesis was that the 'third condyle' provides sufficient flexion stability and induces a close to normal femoral rollback, thus granting natural joint kinematics.
methodsIntra-operative navigation data were collected from 29 consecutive cases that received a cemented TKA (HLS Noetos, Tornier SA, France) designed with an inter-condylar 'third condyle' that engages within the tibial insert beyond 35° flexion. Operations were guided by a non-image-based system (BLU-IGS, Orthokey Italia srl, Italy) that recorded relative femoral and tibial positions in native and implanted knees during: passive range of motion, anterior drawer test at 90° flexion, and varus-valgus stress tests at full extension and at 30° flexion.
resultsThe total internal tibial rotation during flexion was similar for native (8.2 ± 4.2°) and implanted knees (8.0 ± 5.4°). The lateral femoral condyle was more posterior in implanted knees (1.2 ± 9.4 mm) than in native knees (9.5 ± 3.6 mm) throughout early flexion (p < 0.01), but this difference diminished beyond 100° flexion (n.s.). The implanted knees did not exhibit paradoxical external tibial rotation. Varus-valgus laxity in full extension was lower for implanted knees than for native knees (p = 0.0221), but at 30° flexion was almost identical for both native and implanted knees. Anteroposterior laxity was similar in implanted and native knees.
conclusionsThe 'third condyle' TKA provides similar anteroposterior and mediolateral stability to the natural knee. This feature granted an adequate balance between laxity and constraint to reproduce natural joint kinematics, including smooth femoral rollback, without causing paradoxical external tibial rotation.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.