Observational Study
Copyright ©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Nov 6, 2021; 9(31): 9491-9499
Published online Nov 6, 2021. doi: 10.12998/wjcc.v9.i31.9491
Vitamin D deficiency, functional status, and balance in older adults with osteoarthritis
Cláudia N Montemor, Marcos Tadeu P Fernandes, Audrey S Marquez, Regina Célia Poli-Frederico, Rubens Alexandre da Silva, Karen B P Fernandes
Cláudia N Montemor, Rubens Alexandre da Silva, Karen B P Fernandes, Laboratory of Rehabilitation Research, Doctoral Program of Rehabilitation Sciences, University Pitágoras Unopar (UNOPAR), Londrina 86041-140, Parana, Brazil
Marcos Tadeu P Fernandes, Department of Anesthesiology, Irmandade da Santa Casa de Londrina, Londrina 86010-160, Parana, Brazil
Audrey S Marquez, Health Sciences Research Center, University Pitágoras Unopar (UNOPAR), Londrina 86041-140, Parana, Brazil
Regina Célia Poli-Frederico, Doctoral Program of Rehabilitation Sciences, University Pitagoras Unopar (UNOPAR), Londrina 86041-140, Parana, Brazil
Rubens Alexandre da Silva, Karen B P Fernandes, Département des Sciences de la Santé, Centre intersectoriel en santé durable, Laboratoire de recherche BioNR, Université du Québec à Chicoutimi (UQAC ), Saguenay, G7H 2B1, Québec, Canada
Rubens Alexandre da Silva, Centre intégré de santé et services sociaux du Saguenay-Lac-Saint-Jean (CIUSSS SLSJ), Hôpital de La Baie - Services gériatriques spécialisés, Saguenay, Québec, G7H 7K9, Canada
Author contributions: Montemor CN, Fernandes MTP, da Silva RA, and Fernandes KBP collected the patients’ clinical data; Fernandes MTP and Fernandes KBP organized the collected clinical data; Montemor CN, Marquez AS, and Fernandes KBP analyzed the data; Montemor CN and Fernandes MTP wrote the paper; Marquez AS, Poli-Frederico RC, da Silva RA, and Fernandes KBP revised the paper; Poli-Frederico RC and da Silva RA made important contributions to the study performance; Fernandes KBP designed the project and the study.
Supported by National Foundation for Development of Private Higher Education Institutions (FUNADESP)/University Pitagoras UNOPAR, No. 049/15.
Institutional review board statement: This study was approved by the Ethics Committee of the University Pitagoras Unopar (No. 070/09).
Informed consent statement: All study participants provided written informed consent prior to study enrollment.
Conflict-of-interest statement: The authors declare having no conflicts of interest.
Data sharing statement: No additional data are available.
STROBE statement: The authors have read the STROBE Statement-checklist and the manuscript was prepared and revised according to the STROBE Statement.
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Karen B P Fernandes, PhD, Associate Professor, Laboratory of Rehabilitation Research, Doctoral Program of Rehabilitation Sciences, University Pitágoras Unopar (UNOPAR), Rua Marselha, 491 Jardim Piza, Londrina 86041-140, Parana, Brazil. karenparron@gmail.com
Received: February 4, 2021
Peer-review started: February 4, 2021
First decision: March 31, 2021
Revised: April 15, 2021
Accepted: July 9, 2021
Article in press: July 9, 2021
Published online: November 6, 2021
Core Tip

Core Tip: This study investigated the association between vitamin D deficiency and disease severity, functional status, and postural balance in elderly patients with osteoarthritis. The severity of osteoarthritis was assessed by the Kellgren-Lawrence criteria, and the functional status was evaluated with the Lequesne index. Additionally, postural balance was evaluated using a force platform and center-of-pressure parameters. We found that vitamin D deficiency was associated with worse severity and functional status as well as worse postural balance in elderly patients with osteoarthritis.