There were more than 300 million cases of hip and knee osteoarthritis reported worldwide in 2017, with figures expected to rise even further in the future, particularly among women, according to data published in the Annals of the Rheumatic Diseases.

“In recent years, the burden of OA has been presented in several review papers based on few national studies, and no detailed information was provided across all countries,” Saeid Safiri, PhD, of Tabriz University of Medical Sciences, in Iran, and colleagues wrote.