“…Twelve of 23 studies were RCTs, three non-RCTs, and eight observational studies. Twenty-two publications addressed accuracy of IAKIs and/or aspiration, seven assessed accuracy of IAKIs at different sites [14,15,21,22,28–30] , four at one injection site [20,31–33] , and 13 compared blinded and guided IAKIs [2,13,19,20,28,30,34–40] . Of the six studies that reviewed clinical outcomes, one was pertaining to accuracy of IAKI [29] , two compared between different knee injection sites [28,33] , and three compared outcomes between guided and blinded IAKIs [40,41] ( Table 1 ).…”