Fig. 1From: Racial differences in associations between baseline patterns of radiographic osteoarthritis and multiple definitions of progression of hip osteoarthritis: the Johnston County Osteoarthritis ProjectStrengthening the reporting of observational studies in epidemiology (STROBE) diagram of included participants and hips for each progression outcome. THR total hip replacement, KL Kellgren–Lawrence, rOA radiographic osteoarthritis, ROM range of motionBack to article page