ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2015
Post-cam mechanics and tibiofemoral kinematics: a dynamic in vitro analysis of eight posterior-stabilized total knee designs.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 1 of them a synthesis that pooled it.
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Who cites it
33 citing papers in PubMed, 1 synthesis or guideline pooled it, 59 citations in OpenAlex.
- 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
- Biomechanical consequences of minor medial joint line elevation after medial unicompartmental knee arthroplasty.Journal of orthopaedic surgery and research · 2026Article
- Effect of tibial tray backside design on stress transfer and micromotion in uncemented posterior-stabilized TKA: A finite element study.Journal of experimental orthopaedics · 2026Article
- [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
- Similar kinematic patterns in posterior-stabilized and condylar constrained knee prostheses in revision knee arthroplasty: a prospective cohort study.Journal of orthopaedics · 2025Article
- Constraint of Different Knee Implant Designs Under Anterior-Posterior Shear Forces and Internal-External Rotation Moments in Human Cadaveric Knees.Bioengineering (Basel, Switzerland) · 2025Article
- Changes in femoral rollback and rotation with increasing coupling in knee arthroplasty-a biomechanical in-vitro study.BMC musculoskeletal disorders · 2023Article
- Larger Medial Contact Area and More Anterior Contact Position in Medial-Pivot than Posterior-Stabilized Total Knee Arthroplasty during In-Vivo Lunge Activity.Bioengineering (Basel, Switzerland) · 2023Article
- Posterior-stabilized total knee arthroplasty kinematics and joint laxity: A hybrid biomechanical study.Arthroplasty (London, England) · 2022Article
- [Musculoskeletal multibody dynamics investigation of posterior-stabilized total knee prosthesis].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2022Article
- Moderate External Rotation of Tibial Component Generates More Natural Kinematics Than Internal Rotation After Total Knee Arthroplasty.Frontiers in bioengineering and biotechnology · 2022Article
- Catastrophic Failures of the Tibial Post in a Bicruciate Substituting Total Knee Prosthesis.Arthroplasty today · 2021Article
- Secondary Patellar Resurfacing in TKA: A Combined Analysis of Registry Data and Biomechanical Testing.Journal of clinical medicine · 2021Article
- No clinical differences at the 2-year follow-up between single radius and J-curve medial pivot total knee arthroplasty in the treatment of neutral or varus knees.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Article
- Effect of material selection on tibial post stresses in posterior-stabilized knee prosthesis.Bone & joint research · 2020Article
- Varus or valgus positioning of the tibial component of a unicompartmental fixed-bearing knee arthroplasty does not increase wear.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Article
- High congruency MB insert design: stabilizing knee joint even with PCL deficiency.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Article
- Knee joint laxity is restored in a bi-cruciate retaining TKA-design.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Article
- In vivo kinematics and ligamentous function of the knee during weight-bearing flexion: an investigation on mid-range flexion of the knee.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Article
- Are TKA Kinematics During Closed Kinetic Chain Exercises Associated with Patient-reported Outcomes? A Preliminary Analysis.Clinical orthopaedics and related research · 2020Article
Corrections and comments
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Authors and funding
8 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposePosterior cruciate ligament (PCL)-substituting total knee arthroplasty (TKA) designs were introduced to avoid paradoxical roll forward of the femur and to optimize knee kinematics. The aim of this in vitro study was to investigate post-cam function and contact mechanics and relate it to knee kinematics during squatting in eight contemporary posterior-stabilized TKA designs.
methodsAll prostheses were fixed on custom-designed metal fixtures and mounted in a knee rig and five sequential-loaded squats were performed between 30° and 130° of flexion. Contact pressure and contact area were measured using pressure-sensitive Tekscan sensors on the posterior face of the post. Kinematics was recorded with reflective markers and infrared light-capturing cameras.
resultsThe post-cam mechanisms analyzed in this study are very variable in terms of design features. This leads to large variations in terms of the flexion angle at which the post and cam engage maximal contact force, contact pressure and contact area. We found that more functional post-cam mechanisms, which engage at lower flexion angle and have a similar behavior as normal PCL function, generally show more normal rollback and tibial rotation at the expense of higher contact forces and pressures. All designs show high contact forces. A positive correlation was found between contact force and initial contact angle.
conclusionPost-cam contact mechanics and kinematics were documented in a standardized setting. Post-cam contact mechanics are correlated with post-cam function. Outcomes of this study can help to develop more functional designs in future. Nevertheless, a compromise will always be made between functional requirements and risk of failure. We assume that more normal knee kinematics leads to more patient satisfaction because of better mobility. Understanding of the post-cam mechanism, and knowing how this system really works, is maybe the clue in further development of new total knee designs.
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