Related Articles Update of a retrospective cohort study of changes in hip joint phenotype of dogs evaluated by the OFA in the United States, 1989-2003. Vet Surg. 2009 Apr;38(3):398-405 Authors: Kaneene JB, Mostosky UV, Miller R OBJECTIVE: To determine whether there has been improvement in canine hip joint phenotype classifications of dogs whelped from 1989 [...]



