International Orthopaedics

, Volume 42, Issue 4, pp 819–827 | Cite as

Knowledge and attitude towards total knee arthroplasty among the public in Saudi Arabia: a nationwide population-based study

  • Omar A. Al-Mohrej
  • Faris O. Alshammari
  • Abdulrahman M. Aljuraisi
  • Lujain A. Bin Amer
  • Emad M. Masuadi
  • Nader S. Al-Kenani
Original Paper



Studies on total knee arthroplasty (TKA) in Saudi Arabia are scarce, and none have reported the knowledge and attitude of the procedure in Saudi Arabia. Our study aims to measure the knowledge and attitude of TKA among the adult Saudi population.


To encompass a representative sample of this cross-sectional survey, all 13 administrative areas were used as ready-made geographical clusters. For each cluster, stratified random sampling was performed to maximize participation in the study. In each area, random samples of mobile phone numbers were selected with a probability proportional to the administrative area population size. Sample size calculation was based on the assumption that 50% of the participants would have some level of knowledge, with a 2% margin of error and 95% confidence level. To reach our intended sample size of 1540, we contacted 1722 participants with a response rate of 89.4%.


The expected percentage of public knowledge was 50%; however, the actual percentage revealed by this study was much lower (29.7%). A stepwise multiple logistic regression was used to assess the factors that positively affected the knowledge score regarding TKA. Age [P = 0.016 with OR of 0.47], higher income [P = 0.001 with OR of 0.52] and participants with a positive history of TKA or that have known someone who underwent the surgery [P < 0.001 with OR of 0.15] had a positive impact on the total knowledge score.


There are still misconceptions among the public in Saudi Arabia concerning TKA, its indications and results. We recommend that doctors use the results of our survey to assess their conversations with their patients, and to determine whether the results of the procedure are adequately clarified.


Total knee arthroplasty Public health Knowledge Epidemiology Saudi Arabia 



The authors would like to duly express their heart-felt appreciation and gratitude to Dr. Mahmoud S. Mahmoud for proof reading this manuscript.

Compliance with ethical standards

Competing interests

The authors have declared that no competing interests exist.

Ethical approval

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. The present study was approved by the Institutional Review Board (IRB) at King Abdullah Medical International Research Centre, National Guard Health Affairs, Riyadh, Saudi Arabia Protocol Number of SP15/162.


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Copyright information

© SICOT aisbl 2017

Authors and Affiliations

  1. 1.Department of OrthopaedicsKing Faisal Specialist Hospital and Research CentreRiyadhSaudi Arabia
  2. 2.Department of Emergency MedicineKing Abdulaziz Medical CityRiyadhSaudi Arabia
  3. 3.Department of Medical Education, College of MedicineKing Saud bin Abdulaziz University for Health SciencesRiyadhSaudi Arabia
  4. 4.Department of Health Education, College of Health and RehabilitationPrincess Nourah bint Abdulrahman UniversityRiyadhSaudi Arabia
  5. 5.Department of OrthopaedicsKing Abdulaziz Medical CityRiyadhSaudi Arabia

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