“…In addition, the majority of studies were not specifically designed to compare physical examination and ultrasound for detection of synovial proliferation specifically, resulting in potential selection and/or information bias in 9 of 15 studies. While 12 of 15 included studies reported on the correlation between HJHS and ultrasound 11,12,46,47,24,29,[39][40][41][42]44,45 and 7 of 10 aimed at investigating the correlation between HJHS and ultrasound, 11,29,39,40,44,45,47 only De la Corte-Rodriguez et al 29 aimed at comparing the separate items of the HEAD-US and HJHS.…”