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Modified Whiteside’s Line-Based Transepicondylar Axis for Imageless Total Knee Arthroplasty

Author

Listed:
  • Muhammad Sohail

    (Department of Mechanical, Robotics and Energy Engineering, Dongguk University-Seoul, Seoul 04620, Korea)

  • Jaehyun Park

    (Department of Mechanical, Robotics and Energy Engineering, Dongguk University-Seoul, Seoul 04620, Korea)

  • Jun Young Kim

    (Department of Mechanical, Robotics and Energy Engineering, Dongguk University-Seoul, Seoul 04620, Korea)

  • Heung Soo Kim

    (Department of Mechanical, Robotics and Energy Engineering, Dongguk University-Seoul, Seoul 04620, Korea)

  • Jaehun Lee

    (Department of Mechanical, Robotics and Energy Engineering, Dongguk University-Seoul, Seoul 04620, Korea)

Abstract

One of the aims of successful total knee arthroplasty (TKA) is to restore the natural range of motion of the infected joint. The operated leg motion highly depends on the coordinate systems that have been used to prepare the bone surfaces for an implant. Assigning a perfect coordinate system to the knee joint is a considerable challenge. Various commercially available knee arthroplasty devices use different methods to assign the coordinate system at the distal femur. Transepicondylar axis (TEA) and Whiteside’s line are commonly used anatomical axes for defining a femoral coordinate system (FCS). However, choosing a perfect TEA for FCS is trickier, even for experienced surgeons, and a small error in marking Whiteside’s line leads to a misaligned knee joint. This work proposes a modified Whiteside’s line method for the selection of TEA. The Whiteside’s line, along with the knee center and femur head center, define two independent central planes. Multiple prominent points on the lateral and medial sides of epicondyles are marked. Based on the lengths of perpendicular distances between the multiple points and central planes, the most prominent epicondyle points are chosen to define an optimal TEA. Compared to conventional techniques, the modified Whiteside’s line defines a repeatable TEA

Suggested Citation

  • Muhammad Sohail & Jaehyun Park & Jun Young Kim & Heung Soo Kim & Jaehun Lee, 2022. "Modified Whiteside’s Line-Based Transepicondylar Axis for Imageless Total Knee Arthroplasty," Mathematics, MDPI, vol. 10(19), pages 1-17, October.
    • Handle: RePEc:gam:jmathe:v:10:y:2022:i:19:p:3670-:d:935341
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    References listed on IDEAS

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    1. Jonathan Pitocchi & Mariska Wesseling & Gerrit Harry van Lenthe & María Angeles Pérez, 2020. "Finite Element Analysis of Custom Shoulder Implants Provides Accurate Prediction of Initial Stability," Mathematics, MDPI, vol. 8(7), pages 1-13, July.
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    Cited by:

    1. Jun Young Kim & Muhammad Sohail & Heung Soo Kim, 2023. "Rapid Estimation of Contact Stresses in Imageless Total Knee Arthroplasty," Mathematics, MDPI, vol. 11(16), pages 1-15, August.

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