Observational studyKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2019
No correlation between rotation of femoral components in the transverse plane and clinical outcome after total knee arthroplasty.
Observational study in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis 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
12 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Femoral component malrotation is not correlated with poor clinical outcomes after total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Pooled it
- Comparison of Mid-Term Clinical and Radiologic Outcomes Between Measured Resection Technique and Gap Balanced Technique After Total Knee Arthroplasty Using Medial Stabilizing Technique for Severe Varus Knee: A Propensity Score-Matched Analysis.Journal of clinical medicine · 2025Article
- Femoral component rotational alignment in robotic-assisted total knee arthroplasty with functional knee positioning varies across knee phenotypes without affecting clinical outcomes.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025Observational
- Femur rotational alignment in total knee arthroplasty: Delphi consensus statements from European knee society (EKS).Archives of orthopaedic and trauma surgery · 2025Article
- Comparison of anatomic axes with a navigated functional rotation axis determined by ligament tension for rotational femoral component alignment in cadaver knee arthroplasty.Archives of orthopaedic and trauma surgery · 2024Article
- Post-operative Patellar Tilt More than 10° Can Affect Certain Components of Knee Society Score After Total Knee Arthroplasty at 2-Year Follow-Up.Indian journal of orthopaedics · 2024Article
- The Effect of Severe Varus Deformity on Clinical and Radiographic Outcomes in Mechanical Aligned Total Knee Arthroplasty with Medial Stabilizing Technique.Journal of clinical medicine · 2024Article
- Influence of Preoperative Deformity on Flexion Gap Asymmetry in Measured Resection Technique: A Theoretical Study in Navigated Gap Balancing Total Knee Arthroplasties, Done for Varus Knee Osteoarthritis.Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews · 2024Article
- Effect of mediolateral gap difference on postoperative outcomes in navigation-assisted total knee arthroplasty using an ultracongruent insert and the medial stabilising technique.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
- Patients undergoing revisions for total knee replacement malposition are younger and more often female: An analysis of data from the Dutch Arthroplasty register.Journal of orthopaedics · 2023Article
- Variable rotation of the femur does not affect outcome with patient specific alignment navigated balanced TKA.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022Article
- Coronal and axial alignment relationship in Caucasian patients with osteoarthritis of the knee.Scientific reports · 2021Observational
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeIt was hypothesized that malrotation of femoral component in total knee arthroplasty (TKA) will significantly impact clinical outcome.
methodsEighty-eight consecutive patients with primary osteoarthritis of the knee were prospectively evaluated. They received a cemented posterior stabilized TKA (NexGen, Zimmer/Biomet
resultsFemoral component placement was on average 0.1° [SD 2.5°, range - 6.5° to + 6.5°] referenced to the surgical transepicondylar line showing a wide range between the two landmarks after surgery. After 6 months, WOMAC category 'physical function' correlated significantly with femoral component rotation (r = - 0.28, p = 0.007). After 24 months, WOMAC categories 'physical function' and 'pain' correlated significantly with femoral rotation (r = - 0.41, p < 0.001; and r = - 0.33, p = 0.001). No significant correlations were found between femoral component rotation and range of motion (r = 0.04), WOMAC category "stiffness", KSS, as well as SF-36 questionnaires. These reported formally significant correlations were without any clinical relevance. DISCUSSION: The study showed that there is a significant patients specific femoral component placement in the transverse plane. Internal or external malrotation of the femoral component does not correlate automatically with poor knee function. The lack of correlation between femoral component position and clinical as well as functional outcome underlines complexity and significant individuality of each patient. The surgeon should be aware of the finding and attention should be paid during surgery when significant divergency is seen between the two landmarks. Soft tissue balancing might be very crucial in these specific patients, which needs to be studied in depth in the future. LEVEL OF EVIDENCE: II.
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Registered trials
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