ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2021
Kinematic aligned femoral rotation leads to greater patella tilt but similar clinical outcomes when compared to traditional femoral component rotation in total knee arthroplasty. A propensity score matched study.
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 27 papers, 2 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
27 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Patellofemoral Joint Outcomes in Kinematically vs. Mechanically Aligned Total Knee Arthroplasty: A Systematic Review and Meta-Analysis.Medicina (Kaunas, Lithuania) · 2026Pooled it
- Mechanical versus kinematic alignment for total knee arthroplasty: a meta-analysis.Archives of orthopaedic and trauma surgery · 2025Pooled it
- Comparison of Patellar Tracking Following Kinematic Alignment Versus Mechanical Alignment Total Knee Arthroplasty via the Mini-Subvastus Approach.Orthopaedic surgery · 2025Trial
- No difference between resurfaced and non-resurfaced patellae with a modern prosthesis design: a prospective randomized study of 250 total knee arthroplasties.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022Trial
- Patellofemoral outcomes after kinematic versus mechanical alignment in primary total knee arthroplasty : a focused scoping review of head-to-head comparative studies.Bone & joint open · 2026Article
- The Coronal Plane Alignment of the Knee Classification May be Unreliable With Advanced Knee Arthritis.Arthroplasty today · 2026Article
- Patellar tracking and patellar tilt in kinematic versus mechanical knees.Journal of experimental orthopaedics · 2026Article
- The anterior compartment in modern knee arthroplasty.Bulletin of the Hospital for Joint Disease (2013) · 2026Review
- Personalized alignment in total knee arthroplasty reduces patellar tilt: A retrospective study.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2026Article
- Kinematic alignment preserves the mid-flexion trochlear line orientation in total knee arthroplasty: A prospective analysis from the FP-UCBM Knee Study Group.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2026Article
- Short-term Outcomes of Unrestricted Kinematic Alignment: Total Knee Arthroplasty With a Medial Pivot Implant: A Japanese Multicenter Study.Arthroplasty today · 2026Article
- Review
- Personalized Robotic-Assisted Total Knee Arthroplasty with Anatomo-Functional Implant Positioning for Varus Knees: A Minimum Follow-Up of 5 Years.Journal of personalized medicine · 2025Article
- Flexion gap discrepancy drives femoral rotational adjustment in robot-assisted TKA: a CPAK-Based phenotypic analysis.BMC musculoskeletal disorders · 2025Article
- Does Alignment Technique in Medially Stabilized Total Knee Arthroplasty Affect the Patellofemoral Joint Biomechanics and Patient-reported Outcomes at 1 Year? A Prospective Registry-based Cohort Study.Arthroplasty today · 2025Article
- External femoral rotation of 2 degrees is associated with the lowest stuffing rates around the femur in functionally aligned TKA.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025Article
- Image-based robotic total knee arthroplasty preserves the knee joint line level even in advanced fixed flexion deformities when combined with functional alignment principles: A retrospective comparative cohort study.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025Article
- Limitations of the knee society score in kinematically aligned total knee arthroplasty.Journal of experimental orthopaedics · 2024Article
- No difference in postoperative patient satisfaction rates between mechanical and kinematic alignment total knee arthroplasty: A systematic review.Journal of experimental orthopaedics · 2024Review
- Impact of change in coronal plane alignment of knee (CPAK) classification on outcomes of robotic-assisted TKA.Arthroplasty (London, England) · 2024Article
Corrections and comments
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeExternal rotation of femoral component in total knee arthroplasty (TKA) with reference to the posterior condyles is recommended in mechanical alignment (MA) to ensure optimum patella tracking. In kinematic knee alignment (KA) technique, femoral component is more internally rotated as the femoral resection is based on flexion-extension axis. This study aims to investigate the clinical and radiological outcomes of the patellofemoral joint in patients who underwent TKA using KA versus mechanical alignment.
methodsA review of prospectively collected registry data of 378 consecutive cruciate retaining primary TKAs (P.F.C.
resultsOKS, KSS, physical component of SF-36 and satisfaction rates were comparable at both 6 months and 2 years after surgery. There was moderate association between preoperative and postoperative patella tilt in KA TKA (Cramer's V = 0.260, p < 0.05). Postoperatively, KA group had a greater number of patients with lateral patella tilt compared to the mechanical group (12 [12.9%] vs 1 [1.1%], p < 0.001). Patella tilts, however, resolved two years after surgery.
conclusionThe relative internal rotation of the femoral component in KA TKA results in greater incidence of lateral patella tilt postoperatively. Nevertheless, patella tilt resolution was noted at 2 years. LEVEL OF EVIDENCE: Level III Evidence-Retrospective Cohort Study.
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