A study of effect of Vitamin D supplementation inOsteoarthritis patients

Introduction: Osteoarthritis (OA) is the common cause of musculoskeletal disability and pain. Osteoarthritis (OA) is a chronic disease characterized by a loss of articular cartilage and changes of the subchondral bone. Lower levels of vitamin D were associated with greater knee pain, poor quadriceps function with poor physical function. Several studies have documented that vitamin D supplementation increases muscle strength, improve physical performance, and decreases risk of falls among older people with low level of serum vitamin D. Materials &Methods: This present study was conducted at the outpatient clinic of the Department of Orthopedics at Maheswara Medical College & Hospital, Sangareddy during a February–December 2017 study period.The inclusion criteria were that the participants had symptomatic knee OA and low vitamin D status (25(OH)D < 30 ng/mL). Results: Data were analyzed using SPSS Statistics version 22 (SPSS, Inc., Chicago, IL, USA). Comparisonof baseline vs. post-vitamin Dsupplementation data was performed by paired t-test. One-way repeated-measurement ANOVA was used to test the time differences in muscle strength and physical performance. A p-value less than 0.05 for differences and the values were considered to be statistically significant. Dominant grip strength (p = 0.01) and overall physical performance, such as gait speed (p < 0.001), TUGT (p < 0.001), STS (p < 0.001), and 6MWT (p < 0.001), significantly improved after vitamin. Conclusion: Nevertheless, vitamin D supplementation is a safe and inexpensive way to improve muscle strength and physical function in this population. Based on these findings, we recommend vitamin D supplementation in knee OA patients that have poor physical function.