Specific age groups were targeted to recruit approximately age-matched cohorts, but no individual was declined participation. The only exclusion criterion was previous hip surgery. Cam morphology was ...

Of these 104 hips, cam developed in 86 hips (82.7%) with open growth plate and in 18 hips (17.3%) with a closed growth plate. Cam morphology developed from 12 to 13 years of age until growth plate ...