Vitamin D Deficiency is Associated with Knee Osteoarthritis and is Implicated in the Osteoarthritis Severity Vitamin D in Knee Osteoarthritis

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Abdulsatar J Mathkhor Abdulnasser H Abdullah Ali H Atwan Zahraa Mustafa Kamel


Background: Levels of Vitamin D may impact the development and progression of knee osteoarthritis (OA), a disorder common in elderly people The aim of this study was to investigate the association between serum Vitamin D deficiency and knee OA.

Methods: One hundred twenty (40 male and 80 female) consecutive patients were recruited from the rheumatology outpatient clinic for the study. X-rays in two anterior-posterior and lateral views of the knees were performed for all patients. Staging of knee OA was done according to Kellgren-Lawrence criteria and divided into two groups; group A consisting of grades 1 and 2, and group B, consisting of grades 3 and 4. One hundred (30 male and 70 female) healthy individuals without clinical and radiographic signs of the disease were defined as a control group. Hematological and biochemical investigations, including measurement of 25-hydroxyvitamin D serum level, were performed for all participants. Pain intensity using a visual analog scale (VAS) and disease severity using the Western Ontario and McMaster Universities Arthritis Index was measured for all patients.

Results: The mean age of patients and controls were 60±3.5 and 54±2.6 years, respectively. Vitamin D levels of patients and controls were 13±3.3 and 32±2.5, respectively. More severe disease and diseases with prolonged duration were associated with a lower vitamin D level, and low vitamin D levels were associated with high VAS and WOMAC.

Conclusion: Vitamin D deficiency was associated with the development and the severity of knee OA as well as with the disease duration.

Keywords: vitamin D, osteoarthritis, knee, radiography

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MATHKHOR, Abdulsatar J et al. Vitamin D Deficiency is Associated with Knee Osteoarthritis and is Implicated in the Osteoarthritis Severity. Medical Research Archives, [S.l.], v. 10, n. 10, oct. 2022. ISSN 2375-1924. Available at: <>. Date accessed: 19 june 2024. doi:
Research Articles


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