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Effect on patellar kinematics of the different patellar component designs in total knee arthroplasty: intraoperative measurement of dome type versus anatomic type

  • Original Article • KNEE - ARTHROPLASTY
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Abstract

Background

The aim of this study was to identify, during total knee arthroplasty surgery, the effect on patellar kinematics of different patellar component designs in the same patients.

Methods

This study enrolled 84 patients with osteoarthritis. Intraoperative X-rays were used to measure internal rotation angle, flexion angle and lateral tilt were at different knee flexion angles with dome-type or anatomic-type patellar components (ATTUNE®, DePuy).

Results

Significant differences from baseline between the two types of components occurred at 120° of the knee flexion in the internal rotation angle, at 90° and 120° of the knee flexion in the flexion angle, and at 60° of the knee flexion in the lateral tilt.

Conclusion

This study revealed that the difference in patellar component design affects patellar kinematics. Therefore, the difference in patellar component design may affect patellar stability.

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Author information

Authors and Affiliations

  1. Department of Orthopedic Surgery, Kamagaya General Hospital, 929-6 Hatsutomi, Kamagaya, Chiba, 273-0121, Japan

    Takeshi Mochizuki & Ryo Hiroshima

  2. Department of Orthopedic Surgery, Tokyo Women’s Medical University, Tokyo, Japan

    Koichiro Yano, Katsunori Ikari & Ken Okazaki

Authors
  1. Takeshi Mochizuki
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  2. Koichiro Yano
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  3. Katsunori Ikari
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  4. Ryo Hiroshima
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  5. Ken Okazaki
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Contributions

TM, KI and KO designed the research. TM and RH participated in the operations and data collection. KY performed the statistical analysis. KI and KO participated in the editing and submission of the paper. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Takeshi Mochizuki.

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The authors declare that they have no conflict of interest.

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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Mochizuki, T., Yano, K., Ikari, K. et al. Effect on patellar kinematics of the different patellar component designs in total knee arthroplasty: intraoperative measurement of dome type versus anatomic type. Eur J Orthop Surg Traumatol 30, 419–424 (2020). https://doi.org/10.1007/s00590-019-02586-1

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  • DOI: https://doi.org/10.1007/s00590-019-02586-1

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