“…Of the 10 included studies, two were randomized controlled trials, 15,21 one was a retrospective cohort study, 22 one was a prospective case series, 46 and six were retrospective case series. 16,17,20,43,45,47 The number of participants in each study ranged from 10 to 103, and the mean age of participants was 42 years (range 28-52.5). The average duration of ACJ pain until initial conservative treatment was reported in two studies, 16,17 whereas the duration of ACJ pain was implied from the minimum timeframe required to trial conservative management from the remaining eight studies.…”