(a-b) Representative μ-CT images of the condyles revealed a full rescue of the calcified condylar head in the treated KO group by a High-Pi diet (a); Quantitative data showed significant improvement of mineralization related parameters, including BMD, BV/TV, Tb.Sp and Tb.N (b);(c) Representative safranin-O stained images showed restoration of cartilage layers in the KO condyle by a High-Pi diet, which is statistically significant, n=4, *P < 0.05, **P < 0.01.