Micro-CT scans of P60 Col1a1-Cre;Runx3f/f mice or Col2a1-Cre;Runx3f/f mice and control littermates showed that ablation of Runx3 from osteoblasts or chondrocytes did not result in hip dysplasia, as no significant difference were measured in CEA or acetabular index and joint congruency was found to be preserved. This evidence concerns the gene COL2A1 and Hip dysplasia.