VDR and osteomyelitis: More details, further analysis showed that the serum 25(OH)VD levels and T-VDR expression levels in the DFO group were further decreased compared with the NDFO group; the serum 25(OH)VD levels in patients with DFO were positively correlated with T-VDR expression levels; the levels of serum 25(OH)VD and T-VDR expression were negatively correlated with the amputation rate of foot ulcers with osteomyelitis.