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A comparative prospective study between stemmed versus an unstemmed tibial component in total knee arthroplasty in obese patients

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European Journal of Orthopaedic Surgery & Traumatology Aims and scope Submit manuscript

Abstract

Background

There is no consensus in the literature regarding the patients with obesity who do well with TKA, or this group is at risk of a variety of complications. Implant choices between the two types of implants which either long or standard stem can improve the likelihood that a patient with obesity will achieve high scores for function and quality of life after TKA.

Methods

This prospective clinical study included 200 patients who were categorized into two groups: group (1) traditional (standard) unstemmed cemented tibial tray (n = 100 patients) and group (2) stemmed cemented tibial tray with the cementless press-fit stem (n = 100 patients).

Results

The average follow-up was (7.6 ± 1 years) (range from 6.5 up to 10 years). The average age of the stemmed group was 55.69 ± 8.45 and for the unstemmed group was 57.3 ± 7.8. The average BMI for the stemmed patients was 38.84 ± 3.89, while for the standard (unstemmed) group was 40.0 ± 3.95. Functional results showed significant improvement in both groups but more in the stemmed group (LS) as the difference and change between pre and post were more significant at long stem (P > 0.001).

Conclusion

Based on our results, there were significant improvements in both groups either stemmed or unstemmed TKA but more in the stemmed group which had higher functional outcomes compared to the unstemmed group.

Level of evidence

IV.

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Acknowledgements

Great thanks Dr. Wael Galal Lecturer in community medicine Department, Faculty of medicine Zagazig University, Egypt, Mrs/Samah Mahsoub and Ms/Habiba Elzohairy for their great help during the preparation and editing of the current paper.

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Authors and Affiliations

  1. Faculty of Medicine, Zagazig University, Zagazig city, 4451, Ash Sharqia Governorate, Egypt

    Mohamed Mansour Elzohairy, Sherif Mohamed Elaidy & Mohamed Elsadek Attia

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  1. Mohamed Mansour Elzohairy
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  2. Sherif Mohamed Elaidy
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  3. Mohamed Elsadek Attia
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Correspondence to Mohamed Mansour Elzohairy.

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The authors declare that they have no conflict of interest.

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All the procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1975 Helsinki Declaration as revised in 2000.

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All human studies have been approved by the appropriate ethics committee and have therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.

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Informed consent was obtained from all the patients participants included in the present study.

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Elzohairy, M.M., Elaidy, S.M. & Attia, M.E. A comparative prospective study between stemmed versus an unstemmed tibial component in total knee arthroplasty in obese patients. Eur J Orthop Surg Traumatol 31, 695–703 (2021). https://doi.org/10.1007/s00590-020-02816-x

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  • DOI: https://doi.org/10.1007/s00590-020-02816-x

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