“…All participants of the studies had to be diagnosed with knee OA. These diagnoses were made according the American College of Rheumatology (ACR) (de Oliveira et al, 2012;Dias et al, 2017;Hunt et al, 2013;Imoto et al, 2012;Karadağ et al, 2019;Silva et al, 2015;Vincent et al, 2019), the Kellgren-Lawrence Scale (Braghin et al, 2018;de Oliveira et al, 2012;Huang et al, 2020;Imoto et al, 2012;Liu et al, 2019;Munukka et al, 2016;Vincent et al, 2019), the American Rheumatism Association (Liu et al, 2019) or only based on radiology (DeVita et al, 2018;Henriksen et al, 2014;Mazloum et al, 2018;Simão et al, 2012;Wang et al, 2011). Two studies don't specify how diagnoses were made (Ha et al, 2018;Shellington et al, 2019).…”