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The average alpha angles at the different positions of the cranial hemisphere of the femoral head in the athlete and control groups are shown. The two groups were further separated into two subgroups according to an open (n = 27 hips in the athlete group, n = 32 hips in the control group) or closed capital growth plate (n = 45 hips in the athlete group, n = 44 hips in the control group).
