Development of a Knee Joint CT-FEM Model in Load Response of the Stance Phase During Walking Using Muscle Exertion, Motion Analysis, and Ground Reaction Force Data.

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  • Additional Information
    • Source:
      Publisher: MDPI Country of Publication: Switzerland NLM ID: 9425208 Publication Model: Electronic Cited Medium: Internet ISSN: 1648-9144 (Electronic) Linking ISSN: 1010660X NLM ISO Abbreviation: Medicina (Kaunas) Subsets: MEDLINE
    • Publication Information:
      Publication: 2018- : Basel, Switzerland : MDPI
      Original Publication: Kaunas : Lietuvos gydytojų sąjunga
    • Subject Terms:
      Arthroplasty, Replacement/*standards ; Knee Joint/*surgery ; Walking/*physiology ; Weight-Bearing/*physiology; Adult ; Arthroplasty, Replacement/adverse effects ; Arthroplasty, Replacement/methods ; Electromyography/methods ; Finite Element Analysis ; Gait Analysis/methods ; Humans ; Knee Joint/physiopathology ; Male ; Tomography, X-Ray Computed/methods
    • Abstract:
      Background and objectives: There are no reports on articular stress distribution during walking based on any computed tomography (CT)-finite element model (CT-FEM). This study aimed to develop a calculation model of the load response (LR) phase, the most burdensome phase on the knee, during walking using the finite element method of quantitative CT images. Materials and Methods: The right knee of a 43-year-old man who had no history of osteoarthritis or surgeries of the knee was examined. An image of the knee was obtained using CT and the extension position image was converted to the flexion angle image in the LR phase. The bone was composed of heterogeneous materials. The ligaments were made of truss elements; therefore, they do not generate strain during expansion or contraction and do not affect the reaction force or pressure. The construction of the knee joint included material properties of the ligament, cartilage, and meniscus. The extensor and flexor muscles were calculated and set as the muscle exercise tension around the knee joint. Ground reaction force was vertically applied to suppress the rotation of the knee, and the thigh was restrained. Results: An FEM was constructed using a motion analyzer, floor reaction force meter, and muscle tractive force calculation. In a normal knee, the equivalent stress and joint contact reaction force in the LR phase were distributed over a wide area on the inner upper surface of the femur and tibia. Conclusions: We developed a calculation model in the LR phase of the knee joint during walking using a CT-FEM. Methods to evaluate the heteromorphic risk, mechanisms of transformation, prevention of knee osteoarthritis, and treatment may be developed using this model.
      Competing Interests: The authors declare no conflict of interest.
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    • Contributed Indexing:
      Keywords: equivalent stress; finite element; joint reaction force; knee joint; musculoskeletal model
    • Publication Date:
      Date Created: 20200205 Date Completed: 20201015 Latest Revision: 20201015
    • Publication Date:
      20231215
    • Accession Number:
      PMC7074273
    • Accession Number:
      10.3390/medicina56020056
    • Accession Number:
      32013100