PennHip Distraction Index and probability of symptomatic osteoarthritis

From the Journal of Small Animal Practice2010 May;51(5):264-9. doi: 10.1111/j.1748-5827.2010.00937.x

"Distraction index as a risk factor for osteoarthritis associated with hip dysplasia in four large dog breeds." JJ Runge, SP Kelly, TP Gregor, S Kotwal, GK Smith