ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2021
A constrained-condylar fixed-bearing total knee arthroplasty is stabilised by the medial soft tissues.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 13 citations in OpenAlex.
- A scoping review and guide for in vitro healthy human knee joint laxity.Frontiers in bioengineering and biotechnology · 2026Review
- [Effects of elastic modulus of the metal block on the condylar-constrained knee prosthesis tibial fixation stability].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2025Article
- [Application of femoral condyle sliding osteotomy in initial total knee arthroplasty].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2025Article
- Biomechanical analysis of patient specific cone vs conventional stem in revision total knee arthroplasty.Journal of orthopaedic surgery and research · 2024Article
- Mid-flexion laxity could be identified with continuous flexion-arc gap assessment in patients with a large preoperative convergence angle.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
- Primary constrained-condylar-knee designs outperform posterior-stabilized and cruciate-retaining designs in high-grade varus osteoarthritic knees during short-term follow-up: a pilot study.Archives of orthopaedic and trauma surgery · 2023Article
- Preliminary outcomes following revision total knee arthroplasty using a new fixed-bearing revision knee system in Asians: a mean of 3-year follow-up.Journal of orthopaedic surgery and research · 2023Article
- Biomechanical analysis of different levels of constraint in TKA during daily activities.Arthroplasty (London, England) · 2023Article
- Application strategy of finite element analysis in artificial knee arthroplasty.Frontiers in bioengineering and biotechnology · 2023Review
- [Effectiveness analysis of lateral condyle sliding osteotomy in total knee arthroplasty for the treatment of lateral femoral bowing deformity].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2022Article
- Prostheses option in revision total knee arthroplasty, from the bench to the bedside: (1) basic science and principles.EFORT open reviews · 2022Review
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
purposeRevision constrained-condylar total knee arthroplasty (CCK-TKA) is often used to provide additional mechanical constraint after failure of a primary TKA. However, it is unknown how much this translates to a reliance on soft-tissue support. The aim of this study was therefore to compare the laxity of a native knee to the CCK-TKA implanted state and quantify how medial soft-tissues stabilise the knee following CCK-TKA.
methodsTen intact cadaveric knees were tested in a robotic system at 0°, 30°, 60° and 90° flexion with ± 90 N anterior-posterior force, ± 8 Nm varus-valgus and ± 5 Nm internal-external torques. A fixed-bearing CCK-TKA was implanted and the laxity tests were repeated with the soft tissues intact and after sequential cutting. The deep and superficial medial collateral ligaments (dMCL, sMCL) and posteromedial capsule (PMC) were sequentially transected and the percentage contributions of each structure to restraining the applied loads were calculated.
resultsImplanting a CCK-TKA did not alter anterior-posterior laxity from that of the original native knee, but it significantly decreased internal-external and varus-valgus rotational laxity (p < 0.05). Post CCK-TKA, the sMCL restrained 34% of the tibial displacing load in anterior drawer, 16% in internal rotation, 17% in external rotation and 53% in valgus, across the flexion angles tested. The dMCL restrained 11% of the valgus rotation moment.
conclusionsWith a fully-competent sMCL in-vitro, a fixed-bearing CCK-TKA knee provided more rotational constraint than the native knee. The robotic test data showed that both the soft-tissues and the semi-constrained implant restrained rotational knee laxity. Therefore, in clinical practice, a fixed-bearing CCK-TKA knee could be indicated for use in a knee with lax, less-competent medial soft tissues. LEVEL OF EVIDENCE: Controlled laboratory study.
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