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Cited by 23Total Knee Arthroplasty OutcomesKnee injuries and reconstruction techniquesOrthopaedic implants and arthroplasty

Kinematically Aligned Total Knee Arthroplasty with Patient-Specific Instrument

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Kim, Kwang-kyoun, Howell, Stephen M., Won, Ye-yeon·2020·Yonsei Medical Journal
DOI 10.3349/ymj.2020.61.3.201PMC PMC7044694
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Abstract

Kinematically aligned total knee arthroplasty (TKA) is a new alignment technique. Kinematic alignment corrects arthritic deformity to the patient's constitutional alignment in order to position the femoral and tibial components, as well as to restore the knee's natural tibial-femoral articular surface, alignment, and natural laxity. Kinematic knee motion moves around a single flexion-extension axis of the distal femur, passing through the center of cylindrically shaped posterior femoral condyles. Since it can be difficult to locate cylindrical axis with conventional instrument, patient-specific instrument (PSI) is used to align the kinematic axes. PSI was recently introduced as a new technology with the goal of improving the accuracy of operative technique, avoiding practical issues related to the complexity of navigation and robotic system, such as the costs and higher number of personnel required. There are several limitations to implement the kinematically aligned TKA with the implant for mechanical alignment. Therefore, it is important to design an implant with the optimal shape for restoring natural knee kinematics that might improve patient-reported satisfaction and function.

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  • There are several available methods for identifying native coronal plane morphology, including generic cartilage wear assumptions, use of long leg radiographs, or methods based on advanced imaging.

    “There are several available methods for identifying native coronal plane morphology, including generic cartilage wear assumptions, use of long leg radiographs, or methods based on advanced imaging [12–15].”

    From Imageless robotic total knee arthroplasty determines similar coronal plane alignment of the knee (CPAK) parameters to long leg radiographs (2024) · cites this paper as [14]

    The Preoperative Planning section (Reconstruction of 3D model; page not provided) describes CT-based 3D modelling and discusses MRI as another imaging option, supporting the advanced-imaging part of the claim. Our copy does not describe generic cartilage-wear assumptions or long-leg radiographs as methods for identifying native coronal-plane morphology. (LLM, conf=0.84)

    Experimental — accuracy not yet measured

  • Some methods based on CT or MRI use proprietary algorithms that may not be accessible to all surgeons.

    “Some of the methods based on CT or MRI use proprietary algorithms that may not be accessible to all surgeons [14–17].”

    From Imageless robotic total knee arthroplasty determines similar coronal plane alignment of the knee (CPAK) parameters to long leg radiographs (2024) · cites this paper as [14]

    The Preoperative Planning sections describe CT- and MRI-based patient-specific instruments and the use of image-processing software, but do not say that any methods use proprietary algorithms or that those algorithms are inaccessible to surgeons. Searches for proprietary algorithms and software access found no passage addressing that point. (LLM, conf=0.73)

    Experimental — accuracy not yet measured

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Research works printed but not linked: 52

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Authors
Kim, K.-K., Howell, S. M., & Won, Y.-Y.
Affiliations
  • Konyang University (KR)
  • University of California, Davis (US)
  • Ajou University (KR)
Corresponding author
Won, Ye-yeon
ORCID
Venue
Yonsei Medical Journal
Publisher
XMLink
Published
2020
Volume
61
Issue
3
Pages
201
ISSN
  • 0513-5796 (ISSN-L)
  • 1976-2437
DOI
10.3349/ymj.2020.61.3.201
PMC
PMC7044694
OpenAlex
W3008253625
Cited by
23
References
0
Citations by year
2026: 2 · 2025: 4 · 2024: 3 · 2023: 4 · 2022: 5 · 2021: 2 · 2020: 2 · 2019: 1
FWCI
0.74
Type
journal article
Language
en
Open access
Licence
Locations
  • Yonsei Medical Journal (publishedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • AJOU Open Repository (Ajou University) (submittedVersion, cc-by-nc)
Topics
  • Health Sciences › Medicine › Surgery › Total Knee Arthroplasty Outcomes
  • Health Sciences › Medicine › Surgery › Knee injuries and reconstruction techniques
  • Health Sciences › Medicine › Surgery › Orthopaedic implants and arthroplasty
Keywords
total knee arthroplasty, kinematic alignment, patient-specific instrumentation, knee kinematics, posterior femoral condyle, implant design, knee deformity correction, tibiofemoral alignment
MeSH terms
Biomechanical Phenomena, Femur, Humans, Knee Prosthesis, Preoperative Care, Arthroplasty, Replacement, Knee, Osteoarthritis, Knee

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