You can do a hip score at 4 months in OFFA in the USA, but until 24 months the results are considered only "preliminary".
PennHip advises optimally that owners repeat screenings to monitor trends and that screenings at 2 years old are still marginally better than those done at 4 months old.
Last edited by yukidomari; 01-11-2011 at 00:42.
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