Higher concentrations of FT4 associated with increased risk and severity of knee osteoarthritis: Study
A study published in the Osteoarthritis and Cartilage found that higher concentrations of free thyroxine (FT4) were associated with an increased risk and severity of knee osteoarthritis (OA), particularly in individuals with obesity or those engaging in high levels of weight-bearing physical activity.
Previous genetic and animal studies indicated a causal role of thyroid hormones in osteoarthritis (OA), which has not been observed in the general population. They aimed to investigate whether thyroid-stimulating hormone (TSH) and free thyroxine (FT4) were associated with hand, hip, or knee osteoarthritis. Participants from the Rotterdam Study with baseline TSH, FT4, and joint radiographs were included. They used multivariable regression models to investigate the association of thyroid function with the prevalence, severity, incidence, and progression of osteoarthritis.
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