1. 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 (December 2009)
DOI: /j.joca
Copyright © 2009 Osteoarthritis Research Society International Terms and Conditions

2. 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< †Statistically significant after Hochberg correction for multiple comparisons.
Osteoarthritis and Cartilage  , DOI: ( /j.joca )
Copyright © 2009 Osteoarthritis Research Society International Terms and Conditions

3. 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< †Statistically significant after Hochberg correction for multiple comparisons.
Osteoarthritis and Cartilage  , DOI: ( /j.joca )
Copyright © 2009 Osteoarthritis Research Society International Terms and Conditions