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Prevalence of cam-type FAI per hip in athletes vs controls. The term events here refers to the occurrence of cam morphology per hip in athletes and controls. For example, in the 2019 study by Sveen et al, 56 13 experimental events implies that 13 hips had cam morphology out of the 40 hips assessed. Of the 20 assessed control hips, 9 had cam-type FAI. FAI, femoroacetabular impingement; M-H, Mantel-Haenszel.
