Differences in radiographic features of knee osteoarthritis in African-Americans and Caucasians: the Johnston County Osteoarthritis Project  L. Braga, J.B. Renner, T.A. Schwartz, J. Woodard, C.G. Helmick, M.C. Hochberg, J.M. Jordan  Osteoarthritis and Cartilage  Volume 17, Issue 12, Pages 1554-1561 (December 2009) DOI: 10.1016/j.joca.2009.07.011 Copyright © 2009 Osteoarthritis Research Society International Terms and Conditions

Fig. 1 Proportion of tibiofemoral osteoarthritis (TF-OA), and TFJ and PFJ radiographic individual features in Caucasian and AA men. *P-value<0.01, **P-value<0.001. †Statistically significant after Hochberg correction for multiple comparisons. Osteoarthritis and Cartilage 2009 17, 1554-1561DOI: (10.1016/j.joca.2009.07.011) Copyright © 2009 Osteoarthritis Research Society International Terms and Conditions

Fig. 2 Proportion of tibiofemoral osteoarthritis (TF-OA), and TFJ and PFJ radiographic individual features in Caucasian and AA women. *P-value<0.01, **P-value<0.001. †Statistically significant after Hochberg correction for multiple comparisons. Osteoarthritis and Cartilage 2009 17, 1554-1561DOI: (10.1016/j.joca.2009.07.011) Copyright © 2009 Osteoarthritis Research Society International Terms and Conditions